Welcome to our dedicated page for C4 Therapeutics SEC filings (Ticker: CCCC), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The C4 Therapeutics, Inc. (CCCC) SEC filings page on Stock Titan provides structured access to the companys regulatory disclosures as filed with the U.S. Securities and Exchange Commission. C4 Therapeutics is a clinical-stage biopharmaceutical company listed on The Nasdaq Global Select Market, and its filings offer detail on clinical progress, collaborations, financings and corporate governance related to its targeted protein degradation programs.
Investors can use this page to review Form 8-K current reports in which C4 Therapeutics furnishes quarterly financial results, business highlights and updates on key clinical programs such as cemsidomide, an investigational IKZF1/3 degrader in development for relapsed/refractory multiple myeloma and non-Hodgkins lymphoma. 8-K filings also document material events including the clinical trial collaboration and supply agreement with Pfizer for elranatamab, underwritten equity offerings involving common stock and warrants, and stockholder approvals to increase authorized shares.
In addition to event-driven 8-Ks, the companys shelf registration statements, prospectus supplements and related exhibits describe the terms of securities offerings used to fund its pipeline, including cemsidomide, CFT8919 and other degrader programs. Governance-related filings, such as amendments to the certificate of incorporation and annual meeting voting results, provide insight into C4 Therapeutics capital structure and board-level decisions.
On Stock Titan, these SEC documents are complemented by AI-powered summaries that highlight the most important points in each filing, helping readers quickly understand topics like new clinical data disclosures, changes in collaboration arrangements, or the impact of financings on cash runway. Users interested in CCCC can consult this page to follow how C4 Therapeutics reports its clinical, financial and corporate developments through official SEC channels over time.
CCCC submitted a Form 144 notice for the proposed sale of 101,175 shares of common stock via a stock option exercise to be effected on 03/09/2026. The filing also records a prior sale of 11,517 shares on 02/17/2026 with proceeds shown as $21,193.82.
C4 Therapeutics is a clinical-stage biopharmaceutical company focused on targeted protein degradation, using its proprietary TORPEDO platform to design small‑molecule degraders. Its lead programs are cemsidomide for multiple myeloma and CFT8919 for EGFR L858R‑mutant non‑small cell lung cancer, both orally bioavailable oncology candidates.
The company is extending its pipeline into inflammation, neuroinflammation and neurodegeneration, including CNS‑penetrant degraders. It relies heavily on third‑party manufacturers and strategic collaborations with Roche, Biogen, Merck KGaA, Betta Pharma and Pfizer. C4 reported net losses of $105.0 million in 2025 and $105.3 million in 2024 and expects to incur losses for several years, requiring substantial additional funding.
C4 Therapeutics reported fourth quarter and full-year 2025 results and outlined progress across its pipeline. Total revenue was $11.0 million for Q4 and $35.9 million for 2025, roughly flat year over year, while operating expenses declined modestly.
Full-year R&D was $104.2 million and G&A was $36.2 million, contributing to a net loss of $105.0 million, or $1.27 per share. Cash, cash equivalents and marketable securities were $297.1 million as of December 31, 2025, and the company expects this to fund its operating plan to the end of 2028. Strategically, cemsidomide advanced into a Phase 2 trial in later-line multiple myeloma, a Phase 1b combination study with elranatamab is expected to start in Q2 2026, C4T earned a $2 million milestone from Biogen for BTK degrader BIIB145, and it raised $125 million in an October 2025 equity offering.
C4 Therapeutics Chief Business Officer Scott N. Boyle reported equity compensation activity in C4 Therapeutics, Inc. common stock. On February 13, 2026, he received a grant of 200,000 restricted stock units (RSUs), with 100,000 RSUs vesting in three equal annual installments starting February 13, 2027, and 100,000 RSUs vesting in full on February 13, 2029, subject to performance milestones. On February 13 and 14, 2026, previously granted RSUs vested, resulting in the acquisition of 25,950 shares of common stock through derivative exercises, while 9,004 shares were withheld by the company at $1.89 per share to satisfy tax obligations, which the filing states does not represent an open market sale. After these transactions, Boyle directly owned 298,801 shares of common stock.
C4 Therapeutics, Inc. reported equity compensation and related share movements for Chief Scientific Officer Paige Mahaney. On February 13, 2026, Mahaney received a grant of 240,000 restricted stock units (RSUs). Of these, 120,000 RSUs will vest in three equal annual installments starting on February 13, 2027, and 120,000 RSUs will vest in full on February 13, 2029, with the latter portion subject to performance milestones.
On February 14, 2026, Mahaney acquired 7,050 shares of common stock upon vesting of a previously disclosed RSU grant, and 2,446 shares were withheld by the company to cover tax obligations, which the filing states does not represent a sale. After these transactions, Mahaney directly owned 336,910 shares of common stock.
C4 Therapeutics Chief People Officer Kelly Schick reported several equity compensation transactions in Common Stock. Schick received a grant of 200,000 restricted stock units, with 100,000 vesting in three equal annual installments starting on February 13, 2027 and 100,000 vesting in full on February 13, 2029, subject to performance milestones. Additional shares were acquired through the vesting of previously granted RSUs and by exercising derivative securities, while 7,269 and 1,735 shares were withheld to cover tax obligations, which the company notes do not represent market sales. Following these transactions, Schick directly owned 299,881 shares of Common Stock.
C4 Therapeutics, Inc. reported multiple equity transactions by President & CEO Andrew Hirsch. On February 13, 2026, he received 700,000 restricted stock units (RSUs). According to the disclosure, 350,000 RSUs vest in three equal annual installments beginning on February 13, 2027, and 350,000 RSUs vest in full on February 13, 2029, subject to potential acceleration if certain performance milestones are achieved.
On February 14 and 15, 2026, previously granted RSUs vested, resulting in acquisitions of common stock through derivative exercises and conversions. In connection with these vestings, the company withheld 39,154 and 9,057 shares of common stock at $1.89 per share to cover tax withholding obligations. The filing states these withheld shares do not represent sales by Hirsch. After these transactions, he continued to hold over one million shares directly.
C4 Therapeutics Chief Medical Officer Leonard Reyno reported multiple equity compensation transactions in company stock. On February 13, 2026, he received a grant of 240,000 restricted stock units (RSUs), with 120,000 RSUs vesting in three equal annual installments starting on February 13, 2027, and 120,000 RSUs vesting in full on February 13, 2029, subject to potential performance-based acceleration.
On February 14, 2026, previously disclosed RSU awards vested, resulting in the acquisition of 30,950 shares of common stock at no cost. On the same date, 16,579 shares were withheld by the company at $1.89 per share to cover tax obligations related to the RSU vesting, which the filing states does not represent a sale. Following these transactions, Reyno directly owned 379,803 shares of common stock.
C4 Therapeutics, Inc. reported insider equity activity by Chief Financial Officer Kendra Adams. She received a grant of 240,000 restricted stock units (RSUs), which vest in stages through February 13, 2029, based on time and performance conditions.
Adams also acquired 30,950 and 3,750 shares of common stock through vesting and exercise of previously granted RSUs, and 15,381 and 1,863 shares were withheld by the company at $1.89 per share to cover tax obligations. After these transactions, she directly holds 385,098 shares of common stock.
C4 Therapeutics Chief Accounting Officer Mark Mossler reported equity compensation and related share movements. He received a grant of 56,980 restricted stock units, each representing one future share of common stock upon vesting and settlement.
According to the grant terms, 28,490 RSUs vest in three equal annual installments starting on February 13, 2027, and 28,490 RSUs vest in full on February 13, 2029, subject to performance milestones. Separately, 9,420 shares of common stock were acquired upon vesting of previously disclosed RSU awards, while 3,268 shares were withheld by the company at a price of $1.89 per share to cover tax obligations, which the filing specifies is not a sale. After these transactions, Mossler directly holds 71,916 shares of common stock.