CGEM
Cullinan Therapeutics, Inc. · Healthcare · Market cap $1.3B
Insiders sold $923K net in the last 90 days ·1 seller, 0 buyers· 3 of 3 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 10, 2026
Insider Buying
$13.3M
reported purchases (SEC code P)
Insider Selling
$2.5M
reported sales (SEC code S)
Unique Insiders
6
in the rolling window
Latest filing
Sep 10, 2026
Michaelson Jennifer
Cullinan Therapeutics, Inc. (CGEM) has 32 SEC Form 4 filings (47 transaction rows) in the rolling window, disclosed by 6 distinct insiders. Most recent filing: Sep 10, 2026.
Inside the rolling window, 6 insiders at Cullinan Therapeutics, Inc. reported 8 open-market purchases totaling $13.3M and 26 open-market sales totaling $2.5M. The most active filer is Chief Scientific Officer Michaelson Jennifer with 16 filings. Insiders have net sold $1.0M over the trailing 6 months. The most recent open-market filing is a sale of 8,000 shares by Chief Scientific Officer Michaelson Jennifer, dated Sep 8, 2026, worth $173K.
- Industry:Medical - Pharmaceuticals
- CEO:Nadim Ahmed
- Employees:109
- HQ:Cambridge, MA, US
- IPO:2021-01-08
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Scientific Officer | Sale | 8,000 | $173K | Sep 10 | -2.2% | SEC ↗ | |
| Chief Scientific Officer | Sale | 30,000 | $608K | Aug 14 | +1.0% | SEC ↗ | |
| Chief Scientific Officer | Sale | 8,000 | $143K | Jul 7 | +13.1% | SEC ↗ | |
| Chief Scientific Officer | Sale | 8,000 | $117K | May 6 | +37.0% | SEC ↗ | |
| Chief Scientific Officer | Sale | 8,000 | $125K | Mar 9 | +34.2% | SEC ↗ | |
| Chief Scientific Officer | Sale | 1,780 | $25K | Feb 26 | +35.0% | SEC ↗ | |
| Chief Scientific Officer | Sale | 1,752 | $25K | Feb 25 | +43.0% | SEC ↗ | |
| Chief Scientific Officer | Sale | 3,601 | $52K | Feb 25 | +43.0% | SEC ↗ | |
| Chief Medical Officer | Sale | 4,582 | $66K | Feb 25 | +43.0% | SEC ↗ | |
| President and CEO | Sale | 13,515 | $196K | Feb 25 | — | SEC ↗ | |
| Chief Legal Officer | Sale | 3,601 | $52K | Feb 25 | — | SEC ↗ | |
| Chief Scientific Officer | Sale | 11,742 | $165K | Feb 23 | — | SEC ↗ | |
Fenton Mary KayFirst filing | Chief Financial Officer | Sale | 4,398 | $60K | Feb 23 | — | SEC ↗ |
| Chief Legal Officer | Sale | 3,742 | $51K | Feb 23 | — | SEC ↗ | |
| President and CEO | Sale | 16,381 | $223K | Feb 23 | — | SEC ↗ | |
| Chief Medical Officer | Sale | 4,982 | $68K | Feb 23 | — | SEC ↗ | |
| Chief Scientific Officer | Sale | 416 | $5K | Feb 13 | — | SEC ↗ | |
| Chief Scientific Officer | Sale | 4,000 | $49K | Jan 23 | — | SEC ↗ | |
AHMED NADIMFirst filing | President and CEO | Sale | 9,922 | $99K | Dec 29 | — | SEC ↗ |
| Chief Scientific Officer | Sale | 1,345 | $13K | Dec 22 | — | SEC ↗ | |
SUMER JACQUELYN LFirst filing | Chief Legal Officer | Sale | 3,480 | $34K | Dec 19 | — | SEC ↗ |
| Chief Scientific Officer | Sale | 2,898 | $28K | Dec 19 | — | SEC ↗ | |
Jones Jeffrey AlanFirst filing | Chief Medical Officer | Sale | 4,632 | $45K | Dec 19 | — | SEC ↗ |
| Chief Scientific Officer | Sale | 2,148 | $27K | Dec 16 | — | SEC ↗ | |
| Chief Scientific Officer | Sale | 995 | $12K | Dec 16 | — | SEC ↗ |
Frequently asked questions
How many SEC Form 4 insider filings does CGEM have?
Cullinan Therapeutics, Inc. (CGEM) has 32 SEC Form 4 filings (47 transaction rows) in the rolling 365-day window, disclosed by 6 distinct insiders. Most recent filing: Sep 10, 2026.
When was the most recent SEC Form 4 filing for CGEM?
The most recent Form 4 filing for CGEM on Tracefour is dated Sep 10, 2026.
Who is the most active insider at CGEM?
The most active SEC Form 4 filer at CGEM in the rolling window is Chief Scientific Officer Michaelson Jennifer, with 16 filings.
What is the net insider flow at CGEM over the last 6 months?
Over the trailing 180 days, insiders at CGEM have net sold $1.0M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at CGEM in the current window?
Inside the rolling window, insiders at CGEM bought $13.3M and sold $2.5M based on SEC Form 4 filings.
Can I get alerts for CGEM insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Cullinan Therapeutics, Inc. (CGEM). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Cullinan Therapeutics, Inc. is in the Healthcare sector.