CATALYST BIOSCIENCES, INC. Management’s Discussion and Analysis of Financial Condition and Results of Operations (Form 10-Q)
Unless otherwise indicated, in this Quarterly Report on Form 10-Q, references to "Catalyst," "we," "us," "our" or the "Company" mean
Catalyst Biosciences, Inc.and our subsidiary. The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the unaudited condensed consolidated financial statements and related notes that appear in this Quarterly Report on Form 10-Q (this "Report") and with the audited consolidated financial statements and related notes that are included as part of our Annual Report on Form 10-K for the year ended December 31, 2021("Annual Report"). In addition to historical information, this Report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended ("the Exchange Act"). Forward-looking statements are identified by words such as "believe," "will," "may," "estimate," "continue," "anticipate," "intend," "should," "plan," "expect," "predict," "could," "potentially" or the negative of these terms or similar expressions. You should read these statements carefully because they discuss future expectations, contain projections of future results of operations or financial condition, or state other "forward-looking" information. These statements relate to our future plans, objectives, expectations, intentions and financial performance and the assumptions that underlie these statements. For example, forward-looking statements include any statements regarding the strategies, prospects, plans, expectations or objectives of management for future operations, the progress, scope or duration of the development of product candidates or programs, clinical trial plans, timelines and potential results, the benefits that may be derived from product candidates or the commercial or market opportunity in any target indication, our ability to protect intellectual property rights, our anticipated operations, financial position, revenues, costs or expenses, statements regarding future economic conditions or performance, statements of belief and any statement of assumptions underlying any of the foregoing. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those anticipated in the forward-looking statements. Factors that might cause such a difference include, but are not limited to, those discussed in this report in Part II, Item 1A - "Risk Factors," elsewhere in this Report and in Part I - Item 1A - "Risk Factors" in the Annual Report. Forward-looking statements are based on our management's beliefs and assumptions and on information currently available to our management. These statements, like all statements in this Report, speak only as of their date, and we undertake no obligation to update or revise these statements in light of future developments. We caution investors that our business and financial performance are subject to substantial risks and uncertainties.
We are a biopharmaceutical company with expertise in protease engineering and several protease assets that may address unmet medical needs in disorders of the complement or coagulation systems. Proteases are an important class of enzymes, which are key natural regulators of many biological processes, including the complement system. Our complement pipeline includes the development candidates CB 4332 and CB 2782-PEG. CB 4332 is a wholly owned, first-in-class improved albumin-fused Complement Factor I ("CFI") molecule intended for prophylactic subcutaneously ("SQ") or intravitreal ("IVT") administration in individuals with an imbalance in complement homeostasis or a CFI deficiency. CB 2782-PEG is a potential best-in-class component 3 ("C3") degrader product candidate in preclinical development for the treatment of dry age-related macular degeneration ("AMD"). We have proteases from our ProTUNE™ C3b/C4b degrader and ImmunoTUNE™ C3a/C5a degrader platforms designed to target specific disorders of the complement or inflammatory pathways. These programs all target diseases caused by deficient regulation of the complement system and inflammation. We have also used our protein engineering platform to develop potential therapies for coagulation disorders, including marzeptacog alfa (activated) ("MarzAA"), a SQ administered next-generation engineered coagulation Factor VIIa ("FVIIa") for the treatment of episodic bleeding and prophylaxis in subjects with rare bleeding disorders, and dalcinonacog alfa ("DalcA"), a next-generation SQ FIX, both of which has shown sustained efficacy and safety in mid-stage clinical trials. As of March this year we ceased the development of our protease programs and are focused on the monetization of our assets. The product candidates generated by our protease engineering platform are designed to have improved functional properties such as longer half-life, improved specificity and targeting, higher potency, and increased bioavailability. These characteristics potentially allow for improved safety and efficacy for SQ administration of recombinant complement regulators, or less frequently dosed intravitreal products than current therapeutics in development. 14 --------------------------------------------------------------------------------
The following table summarizes our current programs with their latest stage of development.
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February 2022, we announced that we had engaged Perella Weinberg Partners as a financial advisor to assist us in exploring strategic alternatives to monetize our assets. Program Status Complement Our protease programs are designed to take advantage of nature's natural complement regulators that restore complement homeostasis and potentially treat a variety of complement-mediated disorders. We have several protease programs currently in preclinical discovery or early non-clinical development. These programs target diseases caused by aberrant regulation of the complement system including both ocular programs, specifically for dry AMD, and systemic complement disorders, all of which are wholly owned by Catalyst. The complement system is an enzyme-based innate immune defense system with the primary role of protecting the body from pathogens. The system is naturally regulated by proteases which is the basis for our approach to addressing complement-driven diseases. Deficient or excessive activation of the complement system may lead to severe disorders, including microthrombotic, autoimmune and/or immune-complex diseases, severe infectious diseases, and degenerative ophthalmic or neurologic diseases affecting a variety of tissues and organ systems. The absence of regulation can cause the complement system to become self-destructive or not provide the necessary protection when needed. The protease therapeutic candidates generated by our platforms are designed to correct or restore the missing balance in the complement system that drives several diseases. Proteases are uniquely poised to regulate key biological functions such as the complement system, either by promoting or limiting the cascade of events that leads to eventual clearing of foreign and damaged proteins, inflammation, and formation of the membrane attack complex, which is deposited on the surface of cells and drives their destruction. Compared with antibodies and small molecule inhibitors that generally require a sustained excess of therapeutic compound over that of the target, Catalyst's protease therapeutic candidates are based on natural regulatory proteins that are capable of rapidly engaging and modulating large quantities of target molecules, as each protease molecule can degrade many target molecules over their effective lifetime. This means that our proteases are ideal for regulating high abundancy targets such as complement proteins in a way antibodies and small molecule inhibitors cannot. CB 2782-PEG is an engineered pegylated C3 degrader previously licensed to Biogen that we designed with a best-in-class anti-C3 profile for geographic atrophy ("GA") in dry AMD. Dry AMDis an ocular disease that leads to vision loss and blindness for which there is currently no approved therapy. CB 2782-PEG degrades C3 in the eye reducing the steady state level of C3 activity. It is expected 15 -------------------------------------------------------------------------------- that maintaining low C3 levels in the eye can significantly slow disease progression and vision loss in patients with dry AMD. We have demonstrated in preclinical non-human primate models that we have the potential to reduce C3 levels in humans based on modeling studies for up to 3 months with a single intravitreal injection. In September 2021, Apellis released the results of the DERBY and OAKS phase 3 trials for GA secondary to dry AMD, showing that once-monthly pegcetacoplan, a pegylated C3 targeted inhibitor, was safe and efficacious, meeting its primary endpoint in one trial and narrowly missing the primary endpoint in a second trial for reducing GA lesion growth over a 12-month period. Further subpopulation analyses demonstrated a greater effect of reducing GA lesion growth in those subjects with extrafoveal lesions at baseline. CB 2782-PEG provides a differentiated mechanism of action by degrading both C3 and one of its byproducts, C3a potentially offering not only less frequent dosing but a more efficacious mechanism than pegcetacoplan or other complement inhibitors in development for GA. In March 2022, Biogen terminated the license agreement and returned full rights to CB 2782-PEG. CB 4332 is an engineered albumin-fused version of the CFI protease with an extended half-life that can be dosed subcutaneously or intravitreally in individuals who would benefit from enhanced regulation of complement. CFI is the central regulator of the complement system and CB 4332 has the potential to address several mechanistically related diseases driven by complement imbalance such as: Lupus Nephritis ("LN"), Systemic Lupus Erythematosus ("SLE"), warm Autoimmune Hemolytic Anemia ("wAIHA"), atypical Hemolytic Uremic Syndrome ("aHUS"), C3 Glomerulonephritis ("C3G"), and Immune ComplexMembranoproliferative Glomerulonephritis ("IC-MPGN"), dry AMDand complete CFI deficiency ("CFID"), a rare immunodeficiency primarily affecting children. These are severe, chronic, life-threatening diseases that result in a significantly decreased quality of life for the afflicted individual. CB 4332 can be dosed subcutaneously for systemic diseases and has the potential for infrequent IVT injections for ophthalmic indications. As a key complement regulator, CFI has the potential to be used in several complement dysregulated diseases (e.g., those associated with hyperactive complement) in which additional upstream regulation may prove more effective than inhibiting specific downstream targets such as C3 or C5, where many of current molecules in development are targeted. Individuals with complete or significant absence of endogenous CFI may present with a variety of disease manifestations, such as recurrent invasive infections with encapsulated bacteria, but these patients are also at risk of developing autoimmune and/or immune-complex diseases such as chronic inflammation of the blood vessels of the brain, spinal cord, heart, or kidneys. No CFI replacement therapy, including for prophylactic use, has been approved, and patients often receive supportive care with lifelong antibiotic treatment, which may cause a range of additional problems. We have received pre-IND guidance from the FDA as well as Rare Pediatric Disease Designation of CB 4332 for treatment of CFI deficiency in January 2022. Low circulating serum CFI levels have been shown to be associated with rare CFI genetic variants and all forms of AMDranging from early to late-stage manifestations. Studies have estimated the prevalence rates of CFI deficiency in GA to be approximately 20%, suggesting that CFI is a prognostic biomarker for progression of GA. Approximately 1 million individuals globally are predicted to have low serum CFI levels and may potentially benefit from targeted CFI therapy. Gyroscope released interim results from its FOCUS phase 1/2a trial for patients with GA and having rare CFI variants, showing that gene therapy with GT005, an AAV-delivered CFI rebalanced the overactivation of complement observed in the vitreous with sustained expression of CFI. The FOCUS data also showed that AAV-delivered CFI reduced complement biomarkers in the broader GA population who do not have a rare CFI genetic variant.
We have other early-stage complement discovery programs that target different complement system proteins, including proteases from our ProTUNE™ C3b/C4b and ImmunoTUNE™ C3a/C5a degrader platforms. These proteases are designed to target specific complement disorders or inflammatory pathways. The ProTUNE™ platform generates next-generation optimized CFI molecules that are selectively enhanced for potency and target engagement.
MarzAA is a potent, subcutaneously administered, next-generation Factor VIIa variant. We commenced enrollment of a Phase 3 registrational trial of MarzAA for episodic treatment of spontaneous or traumatic bleeding episodes in adolescents and adults with congenital hemophilia A or hemophilia B with inhibitors in
May 2021. We have discontinued this trial based on a number of factors, including challenges in enrollment resulting from the limited number of potential patients eligible to enroll in this trial, competition from competing approved therapies, delays in enrollment resulting from COVID-19, the capital requirements to complete the trial, and other factors. Patients enrolled in the study returned to their standard of care and completed all required safety assessments. In the patients enrolled to date, we have successfully treated bleeds with SQ MarzAA and have not observed any adverse events. We plan to report these data at an appropriate medical conference in the future. We had also begun enrollment of a Phase 1/2 trial of MarzAA for treatment of bleeding in individuals with Factor VII Deficiency, Glanzmann Thrombasthenia, and hemophilia A with inhibitors on emicizumab prophylaxis. We have discontinued this trial as well, in light of the difficulties in identifying and enrolling eligible patients, 16 -------------------------------------------------------------------------------- the capital requirements to complete the trial and other factors. We believe that a SQ recombinant Factor VIIa therapy, like MarzAA, has the potential to be an important treatment option for patients with various bleeding disorders and are exploring opportunities to license or sell MarzAA to another party for further development.
DalcA is a next-generation SQ Factor IX product candidate for the prophylactic treatment of individuals with hemophilia B. An open-label, Phase 2b study was completed in 2020, demonstrating that FIX plasma activity levels were raised from severe to mild hemophilia B levels and maintained throughout the course of the study. We have received guidance from the FDA on the design of the registrational Phase 3 clinical trial, have the necessary data to support its initiation, and are exploring opportunities to license or sell DalcA to another party for further development.
We have no drug products approved for commercial sale and have not generated any revenue from drug product sales. From inception to
March 31, 2022, we have raised net proceeds of approximately $510.1 million, primarily from private placements of convertible preferred stock since converted to common stock, proceeds from our merger with Targacept, issuances of shares of common stock and warrants, including $84.3 millionin total cash receipts from our license and collaboration agreements. We have never been profitable and have incurred significant operating losses in each year since inception. Our net losses were $14.5 millionand $22.4 millionfor the three months ended March 31, 2022and 2021, respectively. As of March 31, 2022, we had an accumulated deficit of $417.2 million. As of March 31, 2022, our cash and cash equivalents balance was $34.8 million. Substantially all our operating losses were incurred in our research and development programs and in our general and administrative operations.
Overview of financial operations
Licensing and Collaboration Revenue
License and collaboration revenue consists of revenue earned for performance obligations satisfied pursuant to our license and collaboration agreement with Biogen which was entered into in
December 2019. In consideration for the grant of an exclusive license and related know-how, we received an up-front license payment of $15.0 millionin January 2020, which was recorded in license revenue during the year ended December 31, 2020. We recognized collaboration revenue for reimbursable third-party vendor, out-of-pocket and personnel costs pertaining to the Biogen Agreement of $0.8 millionand $1.5 millionfor the three months ended March 31, 2022and 2021, respectively. In March 2022, we received notice that Biogen is terminating the license and collaboration agreement. Under the terms of the Biogen Agreement, termination will be effective in May 2022.
We have not generated any revenue from the sale of pharmaceuticals and we do not expect to generate revenue from the sale of pharmaceuticals until we obtain regulatory approval and commercialize our product candidates.
Licensing cost and collaboration revenue
Cost of license and collaboration revenue consists of fees for research and development services payable to third-party vendors, and personnel costs, corresponding to the recognition of license and collaboration revenue from Biogen. Cost of license and collaboration revenue does not include any allocated overhead costs. In connection with the license revenue recognized from Biogen as discussed above in 2020, we paid Mosaic a
$3.0 millionsublicense fee and recorded such payment as cost of license. We recognized third-party vendor, out-of-pocket and personnel costs, most of which were reimbursable, pertaining to the Biogen Agreement of $0.8 millionand $1.5 millionfor the three months ended March 31, 2022and 2021, respectively, and recorded such costs as cost of collaboration revenue.
Research and development costs
Research and development expenses represent costs incurred to conduct research, such as the discovery and development of our product candidates. We recognize all research and development costs as they are incurred. Nonrefundable advance payments for goods or services used in research and development are deferred and capitalized. The capitalized amounts are then expensed as the related goods are delivered or services are performed, or until it is no longer expected that the goods or services will be delivered. 17 --------------------------------------------------------------------------------
Research and development expenses mainly consist of the following items:
• personnel expenses, which include salaries, benefits and shares
• laboratory and supplier fees, including payments to consultants and third parties
parties, related to the execution of preclinical, non-clinical, and clinical studies;
• the cost of acquisition and manufacture of preclinical and clinical equipment
and develop manufacturing processes;
• clinical trial costs, including third party clinical research costs
organizations; • performing toxicity and other preclinical studies; and
• facilities and other allocated expenses, which include direct and allocated expenses
rental and maintenance costs for premises, depreciation and
depreciation charges and other supplies.
The table below details our internal and external costs for research and development for the period presented (in thousands). See Overview and Program Status for further discussion of the current research and development programs. Three Months Ended March 31, 2022 2021 Personnel and other
$ 4,140$ 4,624 Complement 3,383 4,650 Hemophilia 2,052 7,370 Stock-based compensation 128 369
Total research and development expenditure
The largest component of our total operating expenses has historically been our investment in research and development activities, including the clinical and manufacturing development of our product candidates. Costs listed for our hemophilia and complement programs above consist of clinical trial, manufacturing and research costs. Our internal resources, employees and infrastructure, identified above as personnel and other, are generally not directly tied to individual product candidates or development programs. As such, we do not maintain information regarding these costs incurred for these research and development programs on a project-specific basis.
Since we have ceased our research and development activities, we expect our overall research and development expenses to be minimal over the next year as we continue to explore strategic opportunities for the clinical development and manufacturing of our programs.
May 20, 2016, we signed a development and manufacturing services agreement with AGC, pursuant to which AGC will conduct manufacturing development of agreed upon product candidates. We will own all intellectual property developed in such manufacturing development activities that are specifically related to our product candidates and will have a royalty-free and perpetual license to use AGC's intellectual property to the extent reasonably necessary to make these product candidates, including commercial manufacturing. As of March 31, 2022, six GMP batches have been manufactured at AGC in addition to an engineering batch. The initial term of the agreement is ten years or, if later, until all stages under outstanding statements of work have been completed. Either party may terminate the agreement in its entirety upon written notice of a material uncured breach or upon the other party's bankruptcy, and we may terminate the agreement upon prior notice for any reason. In addition, each party may terminate the agreement in the event that the manufacturing development activities cannot be completed for technical or scientific reasons. We had firm work orders with AGC to manufacture MarzAA and DalcA to support clinical trials totaling $15.8 million. The payment obligations were fully paid off as of December 31, 2021. We also have firm work orders with AGC to perform certain manufacturing services related to our collaboration agreement with Biogen totaling $0.7 millionand the payment obligations were fully paid off as of March 31, 2022. In July 2021, we entered into two separate agreements, one for additional clinical trial services for MarzAA, and another for our screening and natural history of disease clinical studies related to CFI deficiency, with total payments of up to $3.2 millionand $6.5 million, respectively. In November 2021, we provided notice of intent to terminate our MarzAA manufacturing agreements and incurred charges of $3.8 millionto write-off prepaid manufacturing costs that will no longer be used for the clinical development of MarzAA. We can terminate the CFI agreement at our discretion and upon termination will be responsible to pay for those services incurred prior to termination plus reasonable wind-down expenses. On September 16, 2021, we signed a Manufacturing and Research and Development Studies Agreement to support the lyophilized drug product, CB 4332. The agreement covers analytical method qualification to support GMP manufacturing. We have firm work orders related to this agreement totaling $0.3 millionand the payment obligations remaining as of March 31, 2022were $0.1 million. 18 -------------------------------------------------------------------------------- We also have a long-term clinical supply services agreement with Catalent Indiana, LLC("Catalent"). Catalent has facilities in the U.S.and Europeand conducts drug product development and manufacturing for MarzAA and DalcA. We successfully completed development work for a variety of vial sizes which supports flexible dosing.
General and administrative expenses
General and administrative expenses consist of personnel costs, allocated expenses and other expenses for outside professional services, including legal, human resources, audit and accounting services. Personnel costs consist of salaries, bonus, benefits and stock-based compensation. We incur expenses associated with operating as a public company, including expenses related to compliance with the rules and regulations of the
Securities and Exchange Commission("SEC") and Nasdaq Stock Market LLC("Nasdaq"), insurance expenses, audit expenses, investor relations activities, Sarbanes-Oxley compliance expenses and other administrative expenses and professional services. We expect such expenses to fluctuate as we continue to explore strategic opportunities for our programs. Results of Operations The following table set forth our results of operations data for the periods presented (in thousands): Three Months Ended March 31, 2022 2021 Change ($) Change (%) Revenue: License $ - $ - $ - * Collaboration 794 1,467 (673 ) 46 % License and collaboration revenue 794 1,467 (673 ) 46 % Operating expenses: Cost of license - - - * Cost of collaboration 798 1,480 (682 ) 46 % Research and development 9,703 17,013 (7,310 ) 43 % General and administrative 4,994 5,412 (418 ) 8 % Total operating expenses 15,495 23,905 (8,410 ) 35 % Loss from operations (14,701 ) (22,438 ) 7,737 34 % Interest and other income, net 165 - 165 *
Net loss and comprehensive loss
$ 7,90235 % *Not meaningful
Licensing and Collaboration Revenue
License and collaboration revenue was
$0.8 millionand $1.5 millionduring the three months ended March 31, 2022and 2021, respectively. In the three months ended March 31, 2022and 2021, revenue consisted primarily of reimbursable collaboration expenses from our Biogen Agreement.
Cost of license and collaboration
Cost of license and collaboration revenue was
$0.8 millionand $1.5 millionduring the three months ended March 31, 2022and 2021, respectively. Cost of collaboration for the three months ended March 31, 2022and 2021 was primarily reimbursable third-party vendor and personnel costs we incurred pertaining to the Biogen Agreement. 19 --------------------------------------------------------------------------------
Research and development costs
Research and development expenses were
$9.7 millionand $17.0 millionduring the three months ended March 31, 2022and 2021, respectively, a decrease of $7.3 million, or 43%. The decrease was due primarily to a decrease of $5.3 millionin hemophilia-related costs, a decrease of $1.3 millionin complement-related costs, a decrease of $0.5 millionin personnel-related costs, and a decrease of $0.2 millionin stock-based compensation expense. Research and development expenses for the three months ended March 31, 2022include approximately $0.6 millionof severance and other costs related to our reduction-in-force.
General and administrative expenses
General and administrative expenses were
$5.0 millionand $5.4 millionduring the three months ended March 31, 2022and 2021, respectively, a decrease of $0.4 million, or 8%. The decrease was due primarily to a decrease of $0.6 millionin professional services, partially offset by an increase of $0.2 millionrelated to our allowance for doubtful accounts. General and administrative expenses for the three months ended March 31, 2022include approximately $0.4 millionof severance and other costs related to our reduction-in-force.
Interest and other income, net
$0.2 millionincrease in interest and other income, net for the three months ended March 31, 2022compared to the three months ended March 31, 2021was primarily due to a $0.2 milliongain recognized upon the extinguishment of a liability.
Recent accounting pronouncements
See “Recently Adopted Accounting Pronouncements” included in Note 2, Summary of Significant Accounting Policies, in the “Notes to the Condensed Consolidated Financial Statements” of this Form 10-Q.
Cash and capital resources
March 31, 2022, we had $34.8 millionof cash and cash equivalents. For the three months ended March 31, 2022, we had a $14.5 millionnet loss and $12.1 millioncash used in operating activities. We have an accumulated deficit of $417.2 millionas of March 31, 2022. Our primary uses of cash are to fund operating and business development expenses and general and administrative expenditures. Cash used to fund operating expenses is impacted by the timing of when we pay these expenses, as reflected in the change in our outstanding accounts payable and accrued expenses. We believe that our existing capital resources, including cash and cash equivalents will be sufficient to meet our projected operating requirements for at least the next 12 months from the date of this filing. We have based this estimate on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we currently expect. We plan to continue to fund losses from operations and capital funding needs through future equity and/or debt financings, as well as potential additional asset sales, licensing transactions, collaborations or strategic partnerships with other companies. At the year ended March 31, 2022, we had effective registration statements on Form S-3 that enable us to sell up to $150.0 millionin securities subject to limitations under SECrules. The sale of additional equity or convertible debt could result in additional dilution to our stockholders. The incurrence of indebtedness would result in debt service obligations and could result in operating and financing covenants that would restrict our operations. Licensing transactions, collaborations or strategic partnerships may result in us relinquishing valuable rights. We can provide no assurance that financing will be available in the amounts we need or on terms acceptable to us, if at all. If we are not able to secure adequate additional funding we may be forced to delay, make reductions in spending, extend payment terms with suppliers, liquidate assets where possible, and/or suspend or curtail planned programs. Any of these actions could materially harm our business. The following table summarizes our cash flows for the periods presented (in thousands): Three Months Ended March 31, 2022 2021 Cash used in operating activities $ (12,050 ) $ (24,356 )Cash provided by investing activities 2,504
Cash provided by financing activities 16
(Decrease) net increase in cash and cash equivalents
Cash flow from operating activities
Cash used in operating activities for the three months ended
March 31, 2022was $12.1 million. The most significant component of our cash used was a net loss of $14.5 million. This included non-cash expense related to stock-based compensation of $0.5 million, bad debt expense of $0.2 millionand depreciation and amortization of $0.1 million. In addition, cash inflow of $1.7 millionwas attributable to the change in our net operating assets and liabilities primarily as a result of a $1.5 milliondecrease in prepaid and other current assets, a $1.1 milliondecrease in accounts receivable, and a $1.0 millionincrease in accrued compensation and other accrued liabilities, partially offset by a $1.7 milliondecrease in accounts payable and a $0.2 milliondecrease in deferred revenue related to the Biogen Agreement. Cash used in operating activities for the three months ended March 31, 2021was $24.4 million, due primarily to a net loss of $22.4 million, and the change in our net operating assets and liabilities of $3.0 million. The change in our net operating assets and liabilities is due primarily to a $1.7 millionincrease in prepaid and other assets, a $3.0 milliondecrease in accounts payable, and a $0.7 milliondecrease in deferred revenue related to the Biogen Agreement, offset by a $2.3 milliondecrease in accounts receivable. Non-cash charges of $1.0 millionwere recorded for stock-based compensation.
Cash flow from investing activities
Cash flows generated by investing activities for the three months ended
Cash flows generated by investing activities for the three months ended
Cash flow from financing activities
Cash flow from financing activities for the three months ended
was due to the issue of free shares.
Cash provided by financing activities for the three months ended
March 31, 2021was $49.5 million, due to $49.3 millionin net proceeds from the issuance of common stock related to our public offering in the first quarter of 2021 and $0.2 millionin stock grants.
Critical accounting policies and estimates
There have been no significant changes to our critical accounting policies since
December 31, 2021. For a description of critical accounting policies that affect our significant judgments and estimates used in the preparation of our unaudited condensed consolidated financial statements, refer to Item 7 "Management's Discussion and Analysis of Financial Condition and Results of Operations" contained in our Annual Report on Form 10-K. ITEM 3. Quantitative and Qualitative Disclosures About Market Risk
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