Welcome to our dedicated page for Cullinan Oncology SEC filings (Ticker: CGEM), 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 Cullinan Therapeutics, Inc. (Nasdaq: CGEM) SEC filings page on Stock Titan provides access to the company’s public disclosures filed with the U.S. Securities and Exchange Commission. These documents include Current Reports on Form 8-K, which Cullinan uses to report material events such as clinical data updates, financial results, regulatory milestones, and significant corporate actions related to its biopharmaceutical business.
For a clinical-stage company like Cullinan, SEC filings are a primary source of detail on the development of its T cell engager and targeted therapy programs. Recent 8-K filings describe updated Phase 1 data for CLN-049, an FLT3xCD3 bispecific T cell engager in relapsed/refractory acute myeloid leukemia and myelodysplastic syndrome, including response rates, safety findings, and the impact of FDA Fast Track designation. Other filings summarize financial results, cash and investment levels, and expectations for cash runway under the company’s operating plan.
Filings may also reference Cullinan’s work in autoimmune diseases with CLN-978, a CD19xCD3 bispecific T cell engager, and its collaboration with Taiho Oncology and Taiho Pharmaceutical on zipalertinib (CLN-081/TAS6417), an EGFR inhibitor for non-small cell lung cancer. These reports can include information on clinical timelines, regulatory interactions, and program prioritization decisions, such as the discontinuation of certain assets or the termination of license agreements.
On Stock Titan, investors can review Cullinan’s SEC filings alongside AI-powered summaries that highlight key points from lengthy documents, helping to interpret complex clinical and regulatory language. Users can monitor new 8-K submissions in real time and place them in context with the company’s broader pipeline and news flow, supporting deeper analysis of CGEM’s risk profile, development progress, and strategic direction.
Cullinan Therapeutics, Inc. President and CEO Nadim Ahmed reported an open-market sale of common stock. On February 20, 2026, he sold 16,381 shares at an average price of $13.62 per share, according to the Form 4 filing.
A footnote explains the sale was made to cover personal income tax obligations arising from the vesting of restricted stock units. After this transaction, Ahmed still holds 404,318 shares of Cullinan Therapeutics common stock directly.
Cullinan Therapeutics Chief Financial Officer Mary Kay Fenton reported a tax-related share sale. On this Form 4, she sold 4,398 shares of common stock at $13.62 per share in an open-market transaction. According to the footnote, the sale was made to cover personal income tax obligations upon vesting of restricted stock units. After this transaction, she directly owned 126,380 shares of Cullinan Therapeutics common stock.
CGEM filing shows a proposed resale of 1,752 shares of common stock through Morgan Stanley Smith Barney LLC.
The filing lists multiple recent 10b5-1 sales by Jennifer Michaelson, including 8,000 shares sold on
Jennifer Michaelson proposes sale of 8,000 common shares. The filing lists 8,000 shares to be sold on
Cullinan Therapeutics, Inc. reported that Chief Legal Officer Jacquelyn L. Sumer received a grant of a stock option covering 230,000 shares of common stock. This option was reported as an acquisition of a derivative security.
According to the disclosure, the shares underlying the option vest over four years, with one forty-eighth of the shares vesting in equal monthly installments until the fourth anniversary of the grant date. Following this grant, Sumer was reported as directly holding options on 230,000 shares.
Jones Jeffrey Alan reported acquisition or exercise transactions in this Form 4 filing.
Cullinan Therapeutics reported that its Chief Medical Officer, Jeffrey Alan Jones, received a grant of stock options covering 300,000 shares of common stock on February 18, 2026. These options vest over four years, with one-forty-eighth of the grant vesting in equal monthly installments until the fourth anniversary of the grant date.
Cullinan Therapeutics reported that President and CEO Nadim Ahmed was granted a stock option covering 828,000 shares of common stock. The option was awarded at an exercise price of $0.00 per share, reflecting a compensatory grant rather than an open-market purchase.
According to the disclosure, the shares underlying the option vest over four years, with one forty-eighth of the option shares vesting in equal monthly installments until the fourth anniversary of the grant date. After this grant, the CEO held options covering 828,000 shares directly.
Cullinan Therapeutics, Inc. reported that Chief Business Officer Corrine Savill received a grant of stock options covering 175,000 shares of common stock. The options have an exercise price of $0.00 per share and vest over four years in equal monthly installments of one forty-eighth of the grant.
Cullinan Therapeutics, Inc. reported that its Chief Financial Officer, Mary Kay Fenton, acquired new equity awards. She received a stock option for 137,500 shares of common stock and a separate award covering 68,750 shares of common stock. The shares underlying the restricted stock unit award vest annually over four years. The shares underlying the option vest over four years, with one forty-eighth of the optioned shares vesting in equal monthly installments until the fourth anniversary of the grant date.
Cullinan Therapeutics, Inc. reported that its Chief Scientific Officer, Jennifer Michaelson, received new equity awards. She was granted stock options for 115,000 shares at an exercise price of
According to the disclosure, the 57,500 common shares are in the form of restricted stock units that vest annually over four years. The 115,000 stock options vest over four years as well, with one forty-eighth of the options vesting in equal monthly installments until the fourth anniversary of the grant date.