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Home›Spontaneous financing›CELLDEX THERAPEUTICS, INC. Management’s Discussion and Analysis of Financial Condition and Results of Operations (Form 10-Q)

CELLDEX THERAPEUTICS, INC. Management’s Discussion and Analysis of Financial Condition and Results of Operations (Form 10-Q)

By Roy George
May 5, 2022
3
0
Safe Harbor Statement under the Private Securities Litigation Reform Act of
1995: This report on Form 10-Q contains forward-looking statements made pursuant
to the safe harbor provisions of the Private Securities Litigation Reform Act of
1995 under Section 27A of the Securities Act of 1933, as amended, and
Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking
statements include statements with respect to our beliefs, plans, objectives,
goals, expectations, anticipations, assumptions, estimates, intentions and
future performance, and involve known and unknown risks, uncertainties and other
factors, which may be beyond our control, and which may cause our actual
results, performance or achievements to be materially different from future
results, performance or achievements expressed or implied by such
forward-looking statements. All statements other than statements of historical
fact are statements that could be forward-looking statements. You can identify
these forward-looking statements through our use of words such as "may," "will,"
"can," "anticipate," "assume," "should," "indicate," "would," "believe,"
"contemplate," "expect," "seek," "estimate," "continue," "plan," "point to,"
"project," "predict," "could," "intend," "target," "potential" and other similar
words and expressions of the future.

There are a number of important factors that could cause the actual results to
differ materially from those expressed in any forward-looking statement made by
us. These factors include, but are not limited to:

? our dependence on product candidates, which are still in an early stage of development

arrange;

our ability to carry out research and further development,

? including preclinical and clinical studies, and, if we obtain

the approval, commercialization of our drug candidates and the growth of the

the markets for these drug candidates;

? our anticipated timeline for preclinical development, regulatory submissions,

initiation and completion of clinical trials and product approvals;

? the impact of the COVID-19 pandemic on our business or the economy

in general;

? whether the COVID-19 pandemic will affect the timeline for the completion of our

preclinical/clinical trials planned and/or in progress;

? our ability to negotiate strategic partnerships, if any, for our

drug candidates;

? our ability to manage multiple clinical trials for a variety of drug candidates

at different stages of development;

? the cost, schedule, scope and results of ongoing preclinical and clinical studies

trial;

? our expectations on the attributes of our products and development candidates,

including pharmaceutical properties, efficacy, safety and dosage schedules;

? the cost, timing and uncertainty of obtaining regulatory approvals for our drug

candidates;

? the availability, cost, delivery and quality of clinical management services

provided by our clinical research organization partners;

the availability, cost, delivery and quality of clinical and commercial grade products

? materials produced by our own manufacturing plant or supplied by contract

manufacturers, suppliers and partners;

? our ability to develop and market products ahead of competitors who

   superior to the alternatives developed by such competitors;


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our ability to develop technological capabilities, including the identification of

? new and clinically important targets, leveraging our existing technology

   platforms to develop new drug candidates and expand our focus to broader
   markets for our existing targeted therapeutics;

the cost of payment for development, regulatory approval and sales milestones

? as part of the merger agreement whereby we acquired Koltanand the cost, time,

and the outcome of our declaratory judgment action against the Koltan shareholder

representative with respect to some of these milestones;

our ability to raise sufficient capital to fund our preclinical and clinical activities

studies and to meet our long-term liquidity needs, on terms acceptable to us,

or not at all. If we are unable to raise the necessary funds to meet our long-term needs

? liquidity needs, we may have to delay or interrupt the development of one or

more programs, interrupting or delaying ongoing or planned clinical trials,

license programs earlier than expected, raise funds with a deep discount

or other adverse terms, if any, or sell all or part of our business;

our ability to protect our intellectual property rights and our ability to

? avoid intellectual property disputes, which can be costly and misleading

management’s time and attention;

? our ability to develop and market products without violating the

the intellectual property rights of third parties; and

the risk factors set forth elsewhere in this Quarterly Report on Form 10-Q and

the factors listed under the headings “Activity”, “Risk Factors” and

? “Management’s commentary and analysis of the financial position and results of

Operations” in the company’s annual report on Form 10-K for the fiscal year ended

December 31, 2021 and other reports we file with securities and

Exchange fee.

All forward-looking statements are expressly qualified in their entirety by this
cautionary notice. You are cautioned not to place undue reliance on any
forward-looking statements, which speak only as of the date of this report or
the date of the document incorporated by reference into this report. We have no
obligation, and expressly disclaim any obligation, to update, revise or correct
any of the forward-looking statements, whether as a result of new information,
future events or otherwise. We have expressed our expectations, beliefs and
projections in good faith, and we believe they have a reasonable basis. However,
we cannot assure you that our expectations, beliefs or projections will result
or be achieved or accomplished.

PREVIEW

We are a biopharmaceutical company dedicated to developing therapeutic
monoclonal and bispecific antibodies that address diseases for which available
treatments are inadequate. Our drug candidates include antibody-based
therapeutics which have the ability to engage the human immune system and/or
directly affect critical pathways to improve the lives of patients with
inflammatory diseases and many forms of cancer.

We focus our efforts and resources on the continuous research and development of:

Barzolvolimab (also called CDX-0159), a monoclonal antibody that

specifically binds the KIT receptor and potently inhibits its activity,

currently being investigated in mast cell-mediated diseases. In October and December

2020 respectively, we announced the opening of registrations and the first

? the patients had been dosed in the phase 1b studies in CSU and CIndU. Positive interim

data from the Phase 1b study in CIndU was reported in July and September 2021

in patients with cold urticaria and symptomatic dermographism. The study has

also been expanded to include patients with cholinergic urticaria and in

December 2021 we announced that the first patient had been dosed in a phase 1b

PN study.

CDX-1140, an agonist monoclonal antibody targeted against CD40, a key activator of

immune response, currently being studied in a phase 1 study. Dose escalation

was supplemented in solid tumors and lymphomas and the recommended dose for

? the study was determined at 1.5 mg/kg for CDX-1140 monotherapy and

combination. We have launched several expansion cohorts within the study,

including a cohort combined with KEYTRUDA® (pembrolizumab) in patients

refractory to PD-1/PD-L1 treatment, which closed to enrollment in March 2022.


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CDX-527, a bispecific antibody that uses our patented highly active technology

? human anti-PD-L1 and CD27 antibodies to couple CD27 costimulation with

blocking of the PD-L1/PD-1 pathway, for which we have initiated a Phase 1 study in

advanced solid tumors in August 2020.

We routinely work with external parties to collaboratively advance our drug
candidates. In addition to Celldex-led studies, we also have an Investigator
Initiated Research (IIR) program with multiple studies ongoing with our drug
candidates.

Our goal is to build a fully integrated, commercial-stage biopharmaceutical
company that develops important therapies for patients with unmet medical needs.
We believe our program assets provide us with the strategic options to either
retain full economic rights to our innovative therapies or seek favorable
economic terms through advantageous commercial partnerships. This approach
allows us to maximize the overall value of our technology and product portfolio
while best ensuring the expeditious development of each individual product.
Currently, all programs are fully owned by Celldex.

The expenditures that will be necessary to execute our business plan are subject
to numerous uncertainties. Completion of clinical trials may take several years
or more, and the length of time generally varies substantially according to the
type, complexity, novelty and intended use of a drug candidate. It is not
unusual for the clinical development of these types of drug candidates to each
take five years or more, and for total development costs to exceed $100 million
for each drug candidate. We estimate that clinical trials of the type we
generally conduct are typically completed over the following timelines:

                   Estimated
                  Completion
Clinical Phase      Period
Phase 1           1 - 2 Years
Phase 2           1 - 5 Years
Phase 3           1 - 5 Years


The duration and the cost of clinical trials may vary significantly over the
life of a project as a result of differences arising during the clinical trial
protocol, including, among others, the following:

? the number of patients who eventually participate in the trial;

? the length of patient follow-up that seems appropriate given the results;

? the number of clinical sites included in the trials;

? the length of time required to recruit suitable patient subjects; and

? the efficacy and safety profile of the drug candidate.


We test potential drug candidates in numerous preclinical studies for safety,
toxicology and immunogenicity. We may then conduct multiple clinical trials for
each drug candidate. As we obtain results from trials, we may elect to
discontinue or delay clinical trials for certain drug candidates in order to
focus our resources on more promising drug candidates.

An element of our business strategy is to pursue the discovery, research and
development of a broad portfolio of drug candidates. This is intended to allow
us to diversify the risks associated with our research and development
expenditures. To the extent we are unable to maintain a broad range of drug
candidates, our dependence on the success of one or a few drug candidates
increases.

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Regulatory approval is required before we can market our drug candidates as
therapeutic products. In order to proceed to subsequent clinical trial stages
and to ultimately achieve regulatory approval, the regulatory agencies must
conclude that our clinical data demonstrate that our product candidates are safe
and effective. Historically, the results from preclinical testing and early
clinical trials (through Phase 2) have often not been predictive of results
obtained in later clinical trials. A number of new drugs and biologics have
shown promising results in early clinical trials but subsequently failed to
establish sufficient safety and efficacy data to obtain necessary regulatory
approvals.

Furthermore, our business strategy includes the option of entering into
collaborative arrangements with third parties to complete the development and
commercialization of our drug candidates. In the event that third parties take
over the clinical trial process for one of our drug candidates, the estimated
completion date would largely be under control of that third party rather than
us. We cannot forecast with any degree of certainty which proprietary products,
if any, will be subject to future collaborative arrangements, in whole or in
part, and how such arrangements would affect our development plan or capital
requirements. Our programs may also benefit from subsidies, grants, contracts or
government or agency-sponsored studies that could reduce our development costs.

As a result of the uncertainties discussed above, among others, it is difficult
to accurately estimate the duration and completion costs of our research and
development projects or when, if ever, and to what extent we will receive cash
inflows from the commercialization and sale of a product. Our inability to
complete our research and development projects in a timely manner or our failure
to enter into collaborative agreements, when appropriate, could significantly
increase our capital requirements and could adversely impact our liquidity.
These uncertainties could force us to seek additional, external sources of
financing from time to time in order to continue with our business strategy. Our
inability to raise additional capital, or to do so on terms reasonably
acceptable to us, would jeopardize the future success of our business.

During the past five years through December 31, 2021, we incurred an aggregate
of $301.1 million in research and development expenses. The following table
indicates the amount incurred for each of our significant research programs and
for other identified research and development activities during the three months
ended March 31, 2022 and 2021. The amounts disclosed in the following table
reflect direct research and development costs, license fees associated with the
underlying technology and an allocation of indirect research and development
costs to each program.

                                   Three Months       Three Months
                                       Ended              Ended
                                  March 31, 2022     March 31, 2021

                                            (In thousands)
Barzolvolimab/Anti-KIT Program    $         9,668    $         6,016
CDX­1140 and CDX-301                          759              1,470
CDX­527                                       605              1,390
Other Programs                              6,024              3,844
Total R&D Expense                 $        17,056    $        12,720

Clinical development programs

The COVID-19 pandemic continues to have a major impact in the US and around the
world. The availability of vaccines holds promise for the future, though new
variants of the virus and potential waning immunity from vaccines may result in
continued impact from this pandemic in the future, which could adversely impact
our operations. To date, the Company has managed delays and disruptions without
significant impact in planned and ongoing preclinical and clinical trials,
manufacturing or shipping. Potential impacts to our business include delays in
planned and ongoing preclinical and clinical trials including enrollment of
patients, disruptions in time and resources provided by independent clinical
investigators, contract research organizations, and other third-party service
providers, temporary closures of our facilities, disruptions or restrictions on
our employees' ability to travel, and delays in manufacturing and/or shipments
to and from third-party suppliers and contract manufacturers for APIs and drug
product.

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Barzolvolimab (also called CDX-0159)

Barzolvolimab is a humanized monoclonal antibody that specifically binds the
receptor tyrosine kinase KIT and potently inhibits its activity. KIT is
expressed in a variety of cells, including mast cells, and its activation by its
ligand SCF regulates mast cell growth, differentiation, survival, chemotaxis and
degranulation. Barzolvolimab is designed to block KIT activation by disrupting
both SCF binding and KIT dimerization. Celldex believes that by targeting KIT,
barzolvolimab may be able to inhibit mast cell activity and decrease mast cell
numbers to provide potential clinical benefit in mast cell related diseases.

In certain inflammatory diseases, such as chronic spontaneous urticaria ("CSU"),
also known as chronic idiopathic urticaria ("CIU") and chronic inducible
urticaria ("CIndU"), mast cell degranulation plays a central role in the onset
and progression of the disease. In June 2020, we completed a randomized,
double-blind, placebo-controlled, single ascending dose escalation Phase 1a
study of barzolvolimab in healthy subjects (n=32; 8 subjects per cohort, 6
barzolvolimab; 2 placebo). Subjects received a single intravenous infusion of
barzolvolimab at 0.3, 1.0, 3.0, or 9.0 mg/kg or placebo. The objectives of the
study included safety and tolerability, pharmacokinetics (PK) and
pharmacodynamics (tryptase and stem cell factor) and immunogenicity. Tryptase is
an enzyme synthesized and secreted almost exclusively by mast cells and
decreases in plasma tryptase levels are believed to reflect a systemic reduction
in mast cell burden in both healthy volunteers and in disease. Data from the
study were featured in a late breaking presentation at the European Academy of
Allergy and Clinical Immunology (EAACI) Annual Congress 2020 in June.
Barzolvolimab demonstrated a favorable safety profile as well as profound and
durable reductions of plasma tryptase, consistent with systemic mast cell
suppression.

These data supported expansion of the barzolvolimab program into mast cell
driven diseases, including initially in CSU and CIndU, diseases where mast cell
degranulation plays a central role in the onset and progression of the disease.
The prevalence of CSU and CIndU is approximately 0.5-1% of the total population
or up to 1 to 3 million patients in the United States alone (Weller et al. 2010.
Hautarzt. 61(8), Bartlett et al. 2018. DermNet. Org). CSU presents as itchy
hives, angioedema or both for at least six weeks without a specific trigger;
multiple episodes can play out over years or even decades. About 50% of patients
with CSU achieve symptomatic control with antihistamines or leukotriene receptor
antagonists. Omalizumab, an IgE inhibitor, provides relief for roughly half of
the remaining antihistamine/leukotriene refractory patients. Consequently, there
is a need for additional therapies. CIndUs are forms of urticaria that have an
attributable cause or trigger associated with them, typically resulting in hives
or wheals. Celldex is exploring cold-induced, dermographism (scratch-induced)
and cholinergic (exercise-induced) urticarias.

In October 2020, we announced that enrollment had opened and the first patient
had been dosed in a Phase 1b multi-center study of barzolvolimab in CSU. This
study is a randomized, double-blind, placebo-controlled clinical trial designed
to assess the safety of multiple ascending doses of barzolvolimab in up to 40
patients with CSU who remain symptomatic despite treatment with antihistamines.
Secondary and exploratory objectives include pharmacokinetic and pharmacodynamic
assessments, including measurement of tryptase and stem cell factor levels and
clinical activity outcomes (impact on urticaria symptoms, disease control,
clinical response) as well as quality of life assessments. Barzolvolimab is
administered intravenously (0.5, 1.5, 3 and 4.5 mg/kg at varying dosing
schedules) as add on treatment to H1-antihistamines, either alone or in
combination with H2-antihistamines and/or leukotriene receptor agonists.

In December 2020, we announced that enrollment had opened and the first patient
had been dosed in a second Phase 1b study in CIndU being conducted in Germany in
patients who are refractory to antihistamines. This study is an open label
clinical trial designed to evaluate the safety of a single dose (3 mg/kg) of
barzolvolimab in patients with cold urticaria (n=10) or symptomatic
dermographism (n=10). In March and June 2021, respectively, we added a third
cohort (single dose, 3 mg/kg) in patients with cholinergic urticaria (n=10) and
a fourth cohort at a lower dose (single dose, 1.5 mg/kg) in cold urticaria.
Patient's symptoms are induced via provocation testing that resembles real life
triggering situations. Secondary and exploratory objectives include
pharmacokinetic and pharmacodynamic assessments, including changes from baseline
provocation thresholds, measurement of tryptase and stem cell factor levels,
clinical activity outcomes (impact on urticaria symptoms, disease control,
clinical response), quality of life assessments and measurement of tissue mast
cells through skin biopsies. Barzolvolimab is administered intravenously on Day
1 as add on treatment to H1-antihistamines.

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In July 2021, we reported positive interim data from the cold urticaria and
symptomatic dermographism cohorts. As of the data cut-off on June 11, 2021, 20
patients had received a single intravenous infusion of barzolvolimab at 3 mg/kg,
including 11 patients with cold urticaria and 9 patients with symptomatic
dermographism. Patients had high disease activity as assessed by provocation
threshold testing. In patients with cold urticaria and symptomatic dermographism
baseline critical temperature thresholds were 18.9°C/66°F (range:
5-27°C/41-80.6°F) and FricTest® thresholds were 3.8 (range: 3-4) of 4 pins.
Safety results were reported for all 20 patients; activity results were reported
for the 19 patients who received a full dose of barzolvolimab. 14 of 19 patients
completed the 12-week study observation period and five were ongoing (range of
2-8 weeks) as of June 11, 2021.

All 19/19 (100)% of patients achieved clinical response, as assessed by

challenge threshold testing; 18/19 (95)% got a complete response and

1/19 (5)% had a partial response. 10/10 (100)% of patients with colds

? hives had a complete response. 8/9 (89) % of patients with symptoms

dermographism had a complete response and 1/9 (11)% had a

partial response. Competitive responses were observed in all 3 patients (1 cold

   urticaria; 2 symptomatic dermographism) with prior Xolair® (omalizumab)
   experience, including two who were Xolair refractory.

A rapid onset of responses after administration and sustained durability were observed.

Most patients with cold urticaria and symptomatic dermographism experienced

? complete response at week 1 and week 4, respectively. The median duration of

   response for patients was 77+ days for cold urticaria and 57+ days for
   symptomatic dermographism.

Improvements in disease activity as reported by physician and patient

? global assessment of disease severity matched comprehensive assessment

responses measured by challenge tests.

A single 3 mg/kg dose of barzolvolimab produced a rapid, marked and long-lasting

suppression of serum tryptase and depletion of cutaneous mast cells (87% depletion)

as measured by biopsy. The kinetics of serum tryptase and cutaneous mast cells

? exhaustion reflected clinical activity. This confirmed that the serum tryptase level

is a robust pharmacodynamic biomarker for assessing mast cell burden and

clinical activity in inducible urticaria and potentially in other diseases

mast cell-induced involvement.

Barzolvolimab was generally well tolerated. The most common adverse events were

hair color changes, mild infusion reactions, and transient taste changes

Perception. Hair color changes (usually small areas of lightening of hair color)

and taste disturbances (usually partial changes in the ability to taste salt) are

consistent with inhibition of KIT signaling in other cell types and should

? be fully reversible. As stated previously in March 2021only one severe

infusion reaction of brief loss of consciousness was observed in one patient

a fainting story. The patient quickly recovered. Above all, no evidence

mast cell activation as measured by serum tryptase monitoring was observed.

   There was no evidence of clinically significant decreases in hematology
   parameters-an important finding for a KIT inhibitor.

A patient with symptomatic dermographism included in the study also had a

? diagnosis of prurigo nodularis (“PN”). After a single dose of barzolvolimab,

this patient experienced both a complete response of symptomatic dermographism

and noticeable improvement in PN.

In September 2021, we reported additional positive data from the study on measures of symptom control and quality of life. A single dose of barzolvolimab (3 mg/kg) produced rapid and sustained improvement in urticaria control and significantly reduced the impact of the disease on quality of life, as measured by the control test. urticaria (UCT) and the dermatological quality of life index (DLQI).

Celldex has expanded clinical development of barzolvolimab into prurigo
nodularis ("PN"). PN is a chronic skin disease characterized by the development
of hard, intensely itchy (pruritic) nodules on the skin. Mast cells through
their interactions with sensory neurons and other immune cells are believed to
play an important role in amplifying chronic itch and neuroinflammation, both of
which are a hallmark of PN. There are currently no FDA approved therapies for
PN, representing an area of significant unmet need. Industry sources estimate
there are approximately 154,000 patients in the United States with PN who have
undergone treatment within the last 12 months and, of these, approximately
75,000 would be biologic-eligible. In December 2021, the first patient was dosed
in a Phase 1b multi-center, randomized, double-blind, placebo-controlled study
designed to assess the safety and treatment effects across multiple dosing
cohorts of barzolvolimab in up to 30 patients with PN.

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Manufacturing activities to support the introduction of the barzolvolimab
subcutaneous formulation into the clinical program have been completed and, in
September 2021, we initiated dosing in a randomized, double-blind,
placebo-controlled, Phase 1 study designed to evaluate the safety of single
ascending doses of the subcutaneous formulation of barzolvolimab in healthy
volunteers. In February 2022, we reported that subcutaneous administration of
barzolvolimab was well tolerated and that multiple dose levels have been
identified that possess promising pharmacokinetic and pharmacodynamic
properties. Importantly, subcutaneous delivery of barzolvolimab resulted in
dose-dependent, rapid and sustained decreases in serum tryptase compared with
placebo and achieved sufficient exposure to produce tryptase suppression levels
comparable with the levels that generated impressive clinical activity observed
in the Phase 1 CIndU intravenous study. Celldex anticipates the upcoming Phase 2
multi-dose studies in urticaria will evaluate 75mg and 150mg administered every
4 weeks and 300mg administered every 8 weeks. The planned doses support a 0.5 to
2 ml injection volume, allowing for a single injection as barzolvolimab advances
towards potential commercialization. In 2022, we plan to initiate a transfer of
our current barzolvolimab manufacturing process to a contract manufacturing
organization to support late-stage trials and to prepare for potential
commercialization.

In February 2022, we also reported interim data after completing the in-life
dosing portion of our six month chronic toxicology study in non-human primates;
a subset of the animals will continue to be followed beyond clearance of the
barzolvolimab antibody to study completion. As expected and consistent with
other KIT-targeting agents, impact on spermatogenesis was observed which is
anticipated to be fully reversible upon clearance of the antibody. There were no
other clinically adverse findings reported in the study. We believe these data
strongly support our planned Phase 2 studies in urticaria later this year and in
future indications.

In February 2022, we announced that we will be expanding clinical development of
barzolvolimab into eosinophilic esophagitis ("EoE"), the most common type of
eosinophilic gastrointestinal disease. EoE is a chronic inflammatory disease of
the esophagus characterized by the infiltration of eosinophils. This chronic
inflammation can result in trouble swallowing, chest pain, vomiting and
impaction of food in the esophagus, a medical emergency. Several studies have
suggested that mast cells may be an important driver in the disease,
demonstrating that the number and activation state of mast cells are greatly
increased in EoE biopsies and that mast cell signatures correlate with markers
of inflammation, fibrosis, pain and disease severity. Currently, there are
limited treatment options for EoE. Individuals often participate in an
elimination diet to identify potential food allergens that may contribute to
EoE, avoid difficult to swallow foods and undergo esophageal dilation. While not
approved for EoE, proton pump inhibitors and the swallowing of topical
corticosteroids are also used to address the disease. Industry sources estimate
there are approximately 160,000 patients in the United States with EoE who have
undergone treatment within the last 12 months and, of these, approximately
48,000 would be biologic-eligible. Given the lack of effective therapies for EoE
and barzolvolimab's potential as a mast cell depleting agent, we believe EoE is
an important indication for future study.

We continue to evaluate the potential opportunities of barzolvolimab in other diseases where mast cells play an important role, such as dermatological, respiratory, allergic, gastrointestinal and ophthalmic conditions.

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CDX-1140

CDX-1140 is a fully human agonist monoclonal antibody targeted to CD40, a key
activator of immune response, which is found on dendritic cells, macrophages and
B cells and is also expressed on many cancer cells. Potent CD40 agonist
antibodies have shown encouraging results in early clinical studies; however,
systemic toxicity associated with broad CD40 activation has limited their dosing
concentrations to levels that may not be optimal for engaging CD40 expressing
cells in the tumor microenvironment. CDX-1140 has unique properties relative to
other CD40 agonist antibodies: potent agonist activity is independent of Fc
receptor interaction, contributing to more consistent, controlled immune
activation; CD40L binding is not blocked, leading to potential synergistic
effects of agonist activity near activated T cells in lymph nodes and tumors;
and the antibody does not promote cytokine production in whole blood assays.
CDX-1140 has shown direct anti-tumor activity in preclinical models of lymphoma.
Preclinical studies of CDX-1140 clearly demonstrate strong immune activation
effects and low systemic toxicity and support the design of the Phase 1 study to
identify the dose for characterizing single-agent and combination activity.

In November 2017, we initiated a Phase 1 study of CDX-1140 in up to 260 patients
with recurrent, locally advanced or metastatic solid tumors and B cell
lymphomas. The study is designed to determine the maximum tolerated dose, or
MTD, during a dose-escalation phase (0.01 to 3.0 mg/kg once every four weeks
until confirmed progression or intolerance) and to recommend a dose level for
further study in a subsequent expansion phase. Secondary objectives include
assessments of safety and tolerability, pharmacodynamics, pharmacokinetics,
immunogenicity and additional measures of anti-tumor activity, including
clinical benefit rate. We believe that the potential for CDX-1140 will be best
defined in combination studies with other immunotherapies or conventional cancer
treatments. A combination cohort with CDX-301, a hematopoietic cytokine that
uniquely expands dendritic cells and hematopoietic stem cells and a safety
run-in combination cohort with gemcitabine/nab-paclitaxel in patients with
previously untreated metastatic pancreatic adenocarcinoma have been completed. A
combination of CDX-1140 with pembrolizumab has completed the safety run-in
phase. Expansion cohorts in patients with checkpoint-refractory/resistant
squamous cell head and neck cancer and non-small cell lung cancer are enrolling
patients.

In November 2020, we reported interim Phase 1 data from patients treated at the
maximum tolerated dose (MTD) and recommended dose of 1.5 mg/kg-one of the
highest systemic dose levels in the CD40 agonist class. Interim data from the
study were presented at the Society for Immunotherapy of Cancer's (SITC) 35th
Annual Meeting 2020 (n=41; 25 mono, 16 with CDX-301 and 29 with post-treatment
scans). Preliminary safety data from the combination cohort with pembrolizumab
(n=9; 4 at 0.72 mg/kg and 5 at 1.5 mg/kg CDX-1140) were also presented. CDX-1140
monotherapy and in combination with pembrolizumab was generally well tolerated
with mostly grade 1 or 2 drug related adverse events. Activity at 1.5mg/kg dose
of CDX-1140 included an ongoing complete response (CR; 18 months as of Oct 2021)
in a patient with follicular lymphoma treated with CDX-1140 monotherapy. There
was notable tumor shrinkage and/or necrosis in 6 patients with squamous cell
head and neck cancer (SCCHN) treated with CDX-1140 alone or in combination with
CDX-301 and stable disease (n=10) for 11 to 32 weeks. CDX-1140 provided good
systemic exposure and resulted in marked changes in the tumor microenvironment.

In November 2021, we provided an update on the ongoing Phase 1 study. Emerging
data from the safety run-in cohort of CDX-1140 with gemcitabine/nab-paclitaxel
in patients with previously untreated metastatic pancreatic adenocarcinoma and
external CD40 agonist data recently reported using the same regimen, suggest
that simultaneous treatment with chemotherapy and CD40 activation may not be
optimal. Alternative strategies for investigating CDX-1140 in pancreatic cancer
in other regimens are being explored, including through investigator sponsored
studies. The combination of CDX-1140 with pembrolizumab has completed the safety
run-in phase. Expansion cohorts in patients with checkpoint-refractory/resistant
squamous cell head and neck cancer and non-small cell lung cancer were also
initiated. In November 2021, we reported that of the six patients with squamous
cell head and neck cancer treated with CDX-1140 at 1.5 mg/kg in combination with
pembrolizumab, encouraging preliminary results were observed including a
confirmed partial response and durable stable disease. Of the six evaluable
patients with non-small cell lung cancer, four had stable disease as their best
response. Adverse events, such as arthralgia, myalgia and fatigue, occurred more
frequently in combination with pembrolizumab relative to CDX-1140 monotherapy
and the protocol was amended to allow CDX-1140 dose reduction, if necessary, to
help manage these toxicities. In late March 2022, Celldex closed enrollment to
the study; patients continue to be dosed and followed for safety and potential
treatment effect.

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CDX-527
CDX-527 is the first candidate from Celldex's bispecific antibody platform.
Bispecifics provide opportunities to engage two independent pathways involved in
controlling immune responses to tumors. CDX-527 uses Celldex's proprietary
highly active anti-PD-L1 and CD27 human antibodies to couple CD27 co-stimulation
with blockade of the PD-L1/PD-1 pathway to help prime and activate anti-tumor T
cell responses through CD27 costimulation, while preventing PD-1 inhibitory
signals that subvert the immune response.

Celldex's prior clinical experience with combining CD27 activation and PD-1
blockade provide the rationale for linking these two pathways into one molecule.
Preclinical data presented at the SITC 34th Annual Meeting in November 2019
demonstrated that CDX-527 is more potent at T cell activation and anti-tumor
immunity than the combination of parental monoclonal antibodies.

In August 2020, we announced the initiation of a Phase 1 dose-escalation study.
The study includes up to approximately 40 patients with advanced or metastatic
solid tumors that have progressed during or after standard of care therapy to be
followed by tumor-specific expansion cohorts. The study is designed to determine
the maximum tolerated dose, or MTD, during a dose-escalation phase and to
recommend a dose level for further study in the subsequent expansion phase. The
expansion is designed to further evaluate the tolerability, and biologic and
anti-tumor effects of selected dose level(s) of CDX-527 in specific tumor types.
Enrollment to the dose escalation portion of the study has been completed and an
expansion cohort in ovarian cancer is enrolling patients.

Interim data were presented at the American Society of Clinical Oncology (ASCO)
2021 Annual Meeting in June that demonstrated a good safety profile along with
promising pharmacodynamic and pharmacokinetic activity, which are important key
hurdles for the development of bispecific antibodies. As of the data cut-off
(April 16, 2021), 11 patients were enrolled in the first 5 dose escalation
cohorts, 0.03 mg/kg through 3 mg/kg.CDX-527 was well tolerated, with no
dose-limiting toxicities or treatment related serious adverse events observed.
Pharmacokinetics and receptor occupancy demonstrate good exposure starting at
the 1 mg/kg dose and no evidence of significant anti-drug antibodies impact.
Pharmacodynamic parameters demonstrate biological activity consistent with
immune activation including: transient increase in pro inflammatory
cytokines/chemokines, upregulation of activation marker on T cells and
particularly NK cells and a decrease in regulatory T cells.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

See Note 2 to the unaudited condensed consolidated financial statements included
elsewhere in this Quarterly Report on Form 10-Q for information regarding newly
adopted and recent accounting pronouncements. See also Note 2 to our financial
statements included in our Annual Report on Form 10-K for the year ended
December 31, 2021 for a discussion of our critical accounting policies and
estimates. There have been no material changes to such critical accounting
policies or estimates. We believe our most critical accounting policies include
accounting for contingent consideration, revenue recognition, intangible and
long-lived assets, research and development expenses and stock-based
compensation expense.

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RESULTS OF OPERATIONS

Three Months Ended March 31, 2022 Compared with Three Months Ended March 31,
2021

                                                   Three Months Ended        Increase/     Increase/
                                                       March 31,            (Decrease)     (Decrease)
                                                   2022          2021            $             %

                                                                   (In thousands)
Revenues:
Product development and licensing agreements    $       30    $        3    $        27           900 %
Contracts and grants                                   144           682          (538)          (79) %
Total revenues                                  $      174    $      685    $     (511)          (75) %
Operating expenses:
Research and development                            17,056        12,720          4,336            34 %
General and administrative                           6,911         4,121          2,790            68 %
(Gain) loss on fair value remeasurement of
contingent consideration                             (536)           483        (1,019)         (211) %
Total operating expense                             23,431        17,324          6,107            35 %
Operating loss                                    (23,257)      (16,639)          6,618            40 %
Investment and other income, net                       207           101   
        106           105 %
Net loss                                        $ (23,050)    $ (16,538)    $     6,512            39 %


Net Loss
The $6.5 million increase in net loss for the three months ended March 31, 2022,
as compared to the three months ended March 31, 2021, was primarily the result
of increases in research and development and general and administrative
expenses, partially offset by an increase in the gain on fair value
remeasurement of contingent consideration.

Revenue

Revenue from product development and licensing agreements for the three months
ended March 31, 2022 was relatively consistent with the three months ended March
31, 2021. The $0.5 million decrease in contracts and grants revenue for the
three months ended March 31, 2022, as compared to the three months ended March
31, 2021, was primarily due to a decrease in services performed under our
manufacturing and research and development agreements with Rockefeller
University and Gilead Sciences. We expect revenue to remain relatively
consistent over the next twelve months, although there may be fluctuations on a
quarterly basis.

Research and development costs

Research and development expenses consist primarily of (i) personnel expenses,
(ii) laboratory supply expenses relating to the development of our technology,
(iii) facility expenses and (iv) product development expenses associated with
our drug candidates as follows:

                         Three Months Ended        Increase/
                             March 31,             (Decrease)
                          2022         2021         $        %

                                     (In thousands)
Personnel              $    7,527     $ 6,038    $ 1,489     25 %
Laboratory supplies         1,637       1,760      (123)    (7) %
Facility                    1,306       1,255         51      4 %
Product development         5,158       2,762      2,396     87 %


Personnel expenses primarily include salary, benefits, stock-based compensation
and payroll taxes. The $1.5 million increase in personnel expenses for the three
months ended March 31, 2022, as compared to the three months ended March 31,
2021, was primarily due to higher stock-based compensation expense and an
increase in employee headcount. We expect personnel expenses to increase over
the next twelve months as a result of additional headcount to support the
expanded development of barzolvolimab.

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Contents

Laboratory supplies expenses include laboratory materials and supplies,
services, and other related expenses incurred in the development of our
technology. The $0.1 million decrease in laboratory supply expenses for the
three months ended March 31, 2022, as compared to the three months ended March
31, 2021, was primarily due to lower laboratory materials and supplies
purchases. We expect laboratory supplies expenses to remain relatively
consistent over the next twelve months, although there may be fluctuations on a
quarterly basis.

Facility expenses include depreciation, amortization, utilities, rent,
maintenance and other related expenses incurred at our facilities. Facility
expenses for the three months ended March 31, 2022 was relatively consistent
with the three months ended March 31, 2021. We expect facility expenses to
remain relatively consistent over the next twelve months, although there may be
fluctuations on a quarterly basis.

Product development expenses include clinical investigator site fees, external
trial monitoring costs, data accumulation costs, contracted research and outside
clinical drug product manufacturing. The $2.4 million increase in product
development expenses for the three months ended March 31, 2022, as compared to
the three months ended March 31, 2021, was primarily due to an increase in
clinical trial expenses. We expect product development expenses to increase over
the next twelve months as a result of further increases in barzolvolimab
clinical trial, contract manufacturing and contract research expenses.

General and administrative costs

The $2.8 million increase in general and administrative expenses for the three
months ended March 31, 2022, as compared to the three months ended March 31,
2021, was primarily due to higher personnel, legal and commercial planning
expenses. We expect general and administrative expenses to increase over the
next twelve months primarily due to increased commercial planning efforts for
barzolvolimab.

(Gain) Loss on fair value Remeasurement of contingent consideration

The $0.5 million gain on fair value remeasurement of contingent consideration
for the three months ended March 31, 2022 was primarily due to changes in
discount rates. The $0.5 million loss on fair value remeasurement of contingent
consideration for the three months ended March 31, 2021 was primarily due to
changes in discount rates and the passage of time.

Investment and other income, net

The $0.1 million increase in investment and other income, net for the three
months ended March 31, 2022, as compared to the three months ended March 31,
2021, was primarily due to higher levels of cash and investment balances. We
expect investment and other income to increase over the next twelve months due
to higher interest rates on fixed income investments and higher other income
related to our sale of New Jersey tax benefits.

CASH AND CAPITAL RESOURCES

Our cash equivalents are highly liquid investments with a maturity of three
months or less at the date of purchase and consist primarily of investments in
money market mutual funds with commercial banks and financial institutions. We
maintain cash balances with financial institutions in excess of insured limits.
We do not anticipate any losses with respect to such cash balances. We invest
our excess cash balances in marketable securities, including municipal bond
securities, U.S. government agency securities and high-grade corporate bonds
that meet high credit quality standards, as specified in our investment policy.
Our investment policy seeks to manage these assets to achieve our goals of
preserving principal and maintaining adequate liquidity.

The use of our cash flows for operations has primarily consisted of salaries and
wages for our employees; facility and facility-related costs for our offices,
laboratories and manufacturing facility; fees paid in connection with
preclinical studies, clinical studies, contract manufacturing, laboratory
supplies and services; and consulting, legal and other professional fees. We
anticipate that our cash flows from operations will continue to be focused in
these areas as we progress our current drug candidates through the clinical
trial process and develop additional drug candidates. To date, the primary
sources of cash flows from operations have been payments received from our
collaborative partners and from government entities and payments received for
contract manufacturing and research and development services provided by us. The
timing of any new contract manufacturing and research and development
agreements, collaboration agreements, government contracts or grants and any
payments under these agreements, contracts or grants cannot be easily predicted
and may vary significantly from quarter to quarter.

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Contents

At March 31, 2022, our principal sources of liquidity consisted of cash, cash
equivalents and marketable securities of $380.5 million. We have had recurring
losses and incurred a loss of $23.1 million for the three months ended March 31,
2022. Net cash used in operations for the three months ended March 31, 2022 was
$24.5 million. We believe that the cash, cash equivalents and marketable
securities at March 31, 2022 are sufficient to meet estimated working capital
requirements and fund planned operations through 2025. This could be impacted if
we elect to pay Kolltan contingent milestones, if any, in cash.

During the next twelve months, we may take further steps to raise additional
capital to meet our long-term liquidity needs including, but not limited to, one
or more of the following: the licensing of drug candidates with existing or new
collaborative partners, possible business combinations, issuance of debt, or the
issuance of common stock or other securities via private placements or public
offerings. Although we have been successful in raising capital in the past,
there can be no assurance that additional financing will be available on
acceptable terms, if at all, and our negotiating position in capital raising
efforts may worsen as existing resources are used. There is also no assurance
that we will be able to enter into further collaborative relationships.
Additional equity financings may be dilutive to our stockholders; debt
financing, if available, may involve significant cash payment obligations and
covenants that restrict our ability to operate as a business; and licensing or
strategic collaborations may result in royalties or other terms which reduce our
economic potential from products under development. Our ability to continue
funding our planned operations into and beyond twelve months from the issuance
date is also dependent on the timing and manner of payment of future contingent
milestones from the Kolltan acquisition, in the event that we achieve the drug
candidate milestones related to those payments. We may decide to pay those
milestone payments in cash, shares of our common stock or a combination thereof.
If we are unable to raise the funds necessary to meet our long-term liquidity
needs, we may have to delay or discontinue the development of one or more
programs, discontinue or delay ongoing or anticipated clinical trials, license
out programs earlier than expected, raise funds at a significant discount or on
other unfavorable terms, if at all, or sell all or a part of our business.

Operational activities

Net cash used in operating activities was $24.5 million for the three months
ended March 31, 2022 as compared to $18.1 million for the three months ended
March 31, 2021. The increase in net cash used in operating activities was
primarily due to an increase in research and development and general and
administrative expenses. We expect that cash used in operating activities will
increase over the next twelve months as a result of the expanded development of
barzolvolimab.

We have incurred and will continue to incur significant costs in the area of
research and development, including preclinical and clinical trials and clinical
drug product manufacturing as our drug candidates are developed. We plan to
spend significant amounts to progress our current drug candidates through the
clinical trial process as well as to develop additional drug candidates. As our
drug candidates progress through the clinical trial process, we may be obligated
to make significant milestone payments, pursuant to our existing arrangements
and arrangements we may enter in the future.

Investing activities

Net cash provided by investing activities was $10.4 million for the three months
ended March 31, 2022 as compared to $43.5 million for the three months ended
March 31, 2021. The decrease in net cash provided by investing activities was
primarily due to net sales and maturities of marketable securities of $11.0
million for the three months ended March 31, 2022 as compared to $44.0 million
for the three months ended March 31, 2021.

Fundraising activities

Net cash provided by financing activities was $0.3 million for the three months
ended March 31, 2022 as compared to $0.1 million for the three months ended
March 31, 2021. The increase in net cash provided by financing activities was
primarily due to an increase in proceeds from issuance of stock from employee
benefit plans.

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