Cullinan Therapeutics, Inc. (CGEM)
Cullinan Therapeutics, Inc. (CGEM) Insider Trading
Directors, officers and holders of more than 10% of CGEM report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 96 transactions on file: 0 with code P, 21 with code S and 29 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | $4.30 | $17,200 |
| Sep 8, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 8,000 | $21.57 | $172,560 |
| Sep 8, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | Not measured | Not measured |
| Aug 13, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 30,000 | Not measured | Not measured |
| Aug 13, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 30,000 | $4.30 | $129,000 |
| Aug 13, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 30,000 | $20.26 | $607,800 |
| Jul 6, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 8,000 | $17.82 | $142,560 |
| Jul 6, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | Not measured | Not measured |
| Jul 6, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | $4.30 | $17,200 |
| Jun 30, 2026 | Fenton Mary Kay | Chief Financial Officer | A Award | 1,541 | $8.60 | $13,253 |
| Jun 30, 2026 | SUMER JACQUELYN L | Chief Legal Officer | A Award | 2,470 | $8.60 | $21,242 |
| Jun 16, 2026 | Thistle Mary | Director | A Award | 25,319 | Not measured | Not measured |
| Jun 16, 2026 | Doyle Mittie | Director | A Award | 21,781 | Not measured | Not measured |
| Jun 16, 2026 | Rosenberg Anthony | Director | A Award | 25,319 | Not measured | Not measured |
| Jun 16, 2026 | Meek David D. | Director | A Award | 25,319 | Not measured | Not measured |
| Jun 16, 2026 | Webster Stephen W | Director | A Award | 25,319 | Not measured | Not measured |
| Jun 16, 2026 | Allen Andrew R | Director | A Award | 21,781 | Not measured | Not measured |
| May 5, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 7,800 | $14.60 | $113,880 |
| May 5, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | Not measured | Not measured |
| May 5, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 200 | $15.58 | $3,116 |
| May 5, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | $4.30 | $17,200 |
| Mar 5, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | $4.30 | $17,200 |
| Mar 5, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 4,000 | Not measured | Not measured |
| Mar 5, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 8,000 | $15.68 | $125,440 |
| Feb 25, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 1,780 | $14.14 | $25,169 |
| Feb 24, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 3,601 | $14.47 | $52,106 |
| Feb 24, 2026 | AHMED NADIM | President and CEO | S Sale | 13,515 | $14.47 | $195,562 |
| Feb 24, 2026 | Jones Jeffrey Alan | Chief Medical Officer | S Sale | 4,582 | $14.47 | $66,302 |
| Feb 24, 2026 | SUMER JACQUELYN L | Chief Legal Officer | S Sale | 3,601 | $14.47 | $52,106 |
| Feb 23, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 1,752 | $13.99 | $24,510 |
| Feb 20, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 8,000 | Not measured | Not measured |
| Feb 20, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 8,000 | $14.30 | $114,400 |
| Feb 20, 2026 | Fenton Mary Kay | Chief Financial Officer | S Sale | 4,398 | $13.62 | $59,901 |
| Feb 20, 2026 | SUMER JACQUELYN L | Chief Legal Officer | S Sale | 3,742 | $13.62 | $50,966 |
| Feb 20, 2026 | AHMED NADIM | President and CEO | S Sale | 16,381 | $13.62 | $223,109 |
| Feb 20, 2026 | Jones Jeffrey Alan | Chief Medical Officer | S Sale | 4,982 | $13.62 | $67,855 |
| Feb 20, 2026 | Michaelson Jennifer | Chief Scientific Officer | M Exercise | 8,000 | $4.30 | $34,400 |
| Feb 20, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 3,742 | $13.62 | $50,966 |
| Feb 18, 2026 | Jones Jeffrey Alan | Chief Medical Officer | A Award | 300,000 | Not measured | Not measured |
| Feb 18, 2026 | Michaelson Jennifer | Chief Scientific Officer | A Award | 115,000 | Not measured | Not measured |
| Feb 18, 2026 | Fenton Mary Kay | Chief Financial Officer | A Award | 137,500 | Not measured | Not measured |
| Feb 18, 2026 | Savill Corrine | Chief Business Officer | A Award | 175,000 | Not measured | Not measured |
| Feb 18, 2026 | AHMED NADIM | President and CEO | A Award | 828,000 | Not measured | Not measured |
| Feb 18, 2026 | SUMER JACQUELYN L | Chief Legal Officer | A Award | 230,000 | Not measured | Not measured |
| Feb 18, 2026 | Fenton Mary Kay | Chief Financial Officer | A Award | 68,750 | Not measured | Not measured |
| Feb 18, 2026 | Michaelson Jennifer | Chief Scientific Officer | A Award | 57,500 | Not measured | Not measured |
| Feb 12, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 416 | $12.03 | $5,004 |
| Jan 22, 2026 | Michaelson Jennifer | Chief Scientific Officer | S Sale | 4,000 | $12.30 | $49,200 |
| Dec 31, 2025 | Fenton Mary Kay | Chief Financial Officer | A Award | 27 | $6.49 | $175 |
| Dec 23, 2025 | AHMED NADIM | President and CEO | S Sale | 9,922 | $10.01 | $99,319 |
The full Form 4 history is on the CGEM company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.