CGEM
Cullinan Oncology LLC
NASDAQ: CGEM · HEALTHCARE · BIOTECHNOLOGY
$12.85
+0.31% today
Updated 2026-04-29
Market cap
$837.68M
P/E ratio
—
P/S ratio
25.86x
EPS (TTM)
$-3.36
Dividend yield
—
52W range
$6 – $17
Volume
0.8M
Cullinan Oncology LLC (CGEM) Insider transactions
Net insider activity
Net buying (5,891,212 shares)
Buy transactions
55
Sell transactions
45
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-05 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 4,000 | — | — |
| 2026-03-05 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 8,000 | $15.68 | $125440.00 |
| 2026-03-05 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 4,000 | $4.30 | $17200.00 |
| 2026-02-25 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 1,780 | $14.14 | $25169.20 |
| 2026-02-24 | SUMER, JACQUELYN L | Chief Legal Officer | Sale | 3,601 | $14.47 | $52106.47 |
| 2026-02-24 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 3,601 | $14.47 | $52106.47 |
| 2026-02-24 | JONES, JEFFREY ALAN | Chief Medical Officer | Sale | 4,582 | $14.47 | $66301.54 |
| 2026-02-24 | AHMED, NADIM | Director, President and CEO | Sale | 13,515 | $14.47 | $195562.05 |
| 2026-02-23 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 1,752 | $13.99 | $24510.48 |
| 2026-02-20 | SUMER, JACQUELYN L | Chief Legal Officer | Sale | 3,742 | $13.62 | $50966.04 |
| 2026-02-20 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 8,000 | — | — |
| 2026-02-20 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 8,000 | $14.30 | $114400.00 |
| 2026-02-20 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 3,742 | $13.62 | $50966.04 |
| 2026-02-20 | JONES, JEFFREY ALAN | Chief Medical Officer | Sale | 4,982 | $13.62 | $67854.84 |
| 2026-02-20 | FENTON, MARY KAY | Chief Financial Officer | Sale | 4,398 | $13.62 | $59900.76 |
| 2026-02-20 | AHMED, NADIM | Director, President and CEO | Sale | 16,381 | $13.62 | $223109.22 |
| 2026-02-18 | SUMER, JACQUELYN L | Chief Legal Officer | Buy | 230,000 | — | — |
| 2026-02-18 | SAVILL, CORRINE | Chief Business Officer | Buy | 175,000 | — | — |
| 2026-02-18 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 115,000 | — | — |
| 2026-02-18 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 57,500 | — | — |
| 2026-02-18 | JONES, JEFFREY ALAN | Chief Medical Officer | Buy | 300,000 | — | — |
| 2026-02-18 | FENTON, MARY KAY | Chief Financial Officer | Buy | 137,500 | — | — |
| 2026-02-18 | FENTON, MARY KAY | Chief Financial Officer | Buy | 68,750 | — | — |
| 2026-02-18 | AHMED, NADIM | Director, President and CEO | Buy | 828,000 | — | — |
| 2026-02-12 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 416 | $12.03 | $5004.48 |
| 2026-01-22 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 4,000 | $12.30 | $49200.00 |
| 2025-12-31 | FENTON, MARY KAY | Chief Financial Officer | Buy | 27 | $6.49 | $175.23 |
| 2025-12-23 | AHMED, NADIM | Director, President and CEO | Sale | 9,922 | $10.01 | $99319.22 |
| 2025-12-19 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 1,345 | $10.01 | $13463.45 |
| 2025-12-18 | SUMER, JACQUELYN L | Chief Legal Officer | Sale | 3,480 | $9.67 | $33651.60 |
| 2025-12-18 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 2,898 | $9.67 | $28023.66 |
| 2025-12-18 | JONES, JEFFREY ALAN | Chief Medical Officer | Sale | 4,632 | $9.67 | $44791.44 |
| 2025-12-15 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 995 | $11.90 | $11840.50 |
| 2025-12-12 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 2,148 | $12.38 | $26592.24 |
| 2025-11-24 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 4,000 | $12.30 | $49200.00 |
| 2025-10-28 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 165,667 | $8.40 | $1.39M |
| 2025-10-17 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 32,217 | $7.84 | $252565.17 |
| 2025-10-16 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 150,000 | $8.86 | $1.33M |
| 2025-10-15 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 51,500 | $7.94 | $409049.05 |
| 2025-10-14 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 15,032 | $7.59 | $114047.78 |
| 2025-10-10 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 277,298 | $7.36 | $2.04M |
| 2025-10-09 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 626,043 | $6.70 | $4.19M |
| 2025-10-08 | LYNX1, CAPITAL MANAGEMENT LP | 10% Owner | Buy | 556,300 | $6.46 | $3.59M |
| 2025-08-07 | DOYLE, MITTIE | Director | Buy | 79,456 | — | — |
| 2025-08-07 | ALLEN, ANDREW R | Director | Buy | 79,456 | — | — |
| 2025-06-12 | WEBSTER, STEPHEN W | Director | Buy | 38,513 | — | — |
| 2025-06-12 | RYAN, DAVID P. | Director | Buy | 38,513 | — | — |
| 2025-06-12 | ROSENBERG, ANTHONY | Director | Buy | 38,513 | — | — |
| 2025-06-12 | MEEK, DAVID D. | Director | Buy | 38,513 | — | — |
| 2025-06-12 | MARTIN, ANNE-MARIE | Director | Buy | 38,513 | — | — |
| 2025-02-25 | SUMER, JACQUELYN L | Chief Legal Officer | Sale | 3,756 | $8.53 | $32038.68 |
| 2025-02-25 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 3,756 | $8.53 | $32038.68 |
| 2025-02-25 | JONES, JEFFREY ALAN | Chief Medical Officer | Sale | 4,895 | $8.53 | $41754.35 |
| 2025-02-25 | AHMED, NADIM | Director, President and CEO | Sale | 12,529 | $8.53 | $106872.37 |
| 2025-02-19 | SUMER, JACQUELYN L | Chief Legal Officer | Buy | 100,000 | — | — |
| 2025-02-19 | SUMER, JACQUELYN L | Chief Legal Officer | Buy | 50,000 | — | — |
| 2025-02-19 | SAVILL, CORRINE | Chief Business Officer | Buy | 75,000 | — | — |
| 2025-02-19 | SAVILL, CORRINE | Chief Business Officer | Buy | 37,500 | — | — |
| 2025-02-19 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 100,000 | — | — |
| 2025-02-19 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 50,000 | — | — |
| 2025-02-19 | JONES, JEFFREY ALAN | Chief Medical Officer | Buy | 130,000 | — | — |
| 2025-02-19 | JONES, JEFFREY ALAN | Chief Medical Officer | Buy | 65,000 | — | — |
| 2025-02-19 | FENTON, MARY KAY | Chief Financial Officer | Buy | 120,000 | — | — |
| 2025-02-19 | FENTON, MARY KAY | Chief Financial Officer | Buy | 60,000 | — | — |
| 2025-02-19 | AHMED, NADIM | Director, President and CEO | Buy | 360,000 | — | — |
| 2025-02-19 | AHMED, NADIM | Director, President and CEO | Buy | 180,000 | — | — |
| 2025-01-06 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 4,000 | $12.51 | $50040.00 |
| 2024-12-24 | AHMED, NADIM | Director, President and CEO | Sale | 8,400 | $11.87 | $99708.00 |
| 2024-12-18 | SUMER, JACQUELYN L | Chief Legal Officer | Sale | 3,482 | $11.41 | $39729.62 |
| 2024-12-18 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 4,693 | $11.41 | $53547.13 |
| 2024-12-18 | JONES, JEFFREY ALAN | Chief Medical Officer | Sale | 4,632 | $11.41 | $52851.12 |
| 2024-12-12 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 3,489 | $12.52 | $43682.28 |
| 2024-11-05 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 8,000 | $15.64 | $125120.00 |
| 2024-09-05 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 8,000 | $18.09 | $144720.00 |
| 2024-08-08 | THISTLE, MARY | Director | Buy | 25,743 | — | — |
| 2024-07-05 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 8,000 | $16.33 | $130640.00 |
| 2024-07-01 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 2,360 | $9.00 | $21240.00 |
| 2024-06-26 | WEBSTER, STEPHEN W | Director | Buy | 15,806 | — | — |
| 2024-06-26 | RYAN, DAVID P. | Director | Buy | 15,806 | — | — |
| 2024-06-26 | ROSENBERG, ANTHONY | Director | Buy | 15,806 | — | — |
| 2024-06-26 | MARTIN, ANNE-MARIE | Director | Buy | 15,806 | — | — |
| 2024-06-10 | EBELING, THOMAS | Director | Sale | 18,450 | — | — |
| 2024-06-10 | EBELING, THOMAS | Director | Buy | 18,450 | $13.00 | $239850.00 |
| 2024-05-23 | EBELING, THOMAS | Director | Sale | 84,224 | — | — |
| 2024-05-23 | EBELING, THOMAS | Director | Sale | 16,475 | — | — |
| 2024-05-23 | EBELING, THOMAS | Director | Buy | 84,224 | $4.30 | $362163.20 |
| 2024-05-23 | EBELING, THOMAS | Director | Buy | 16,475 | $12.73 | $209726.75 |
| 2024-05-15 | MEEK, DAVID D. | Director | Buy | 15,618 | — | — |
| 2024-05-07 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 5,606 | — | — |
| 2024-05-07 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 5,606 | $4.30 | $24105.80 |
| 2024-05-06 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 50,000 | — | — |
| 2024-05-06 | MICHAELSON, JENNIFER | Chief Scientific Officer | Buy | 50,000 | $4.30 | $215000.00 |
| 2024-05-06 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 37,723 | $27.82 | $1.05M |
| 2024-05-06 | MICHAELSON, JENNIFER | Chief Scientific Officer | Sale | 20,277 | $28.54 | $578705.58 |
| 2024-04-29 | FENTON, MARY KAY | Chief Financial Officer | Buy | 200,000 | — | — |
| 2024-02-22 | TRIGILIO, JEFFREY | Chief Financial Officer | Buy | 100,000 | — | — |
| 2024-02-22 | TRIGILIO, JEFFREY | Chief Financial Officer | Buy | 50,000 | — | — |
| 2024-02-22 | SUMER, JACQUELYN L | Chief Legal Officer | Buy | 100,000 | — | — |
| 2024-02-22 | SUMER, JACQUELYN L | Chief Legal Officer | Buy | 50,000 | — | — |
| 2024-02-22 | SAVILL, CORRINE | Chief Business Officer | Buy | 75,000 | — | — |