🕵️ Kymera Therapeutics, Inc. ($KYMR)
SEC insider & ownership activity, last 12 months · CIK 1815442 · every row links its SEC filing
Over the last 12 months insiders sold $472.2M against $172.5M of open-market buying. Booth Bruce sold $217.7M through a 10b5-1 trading plan in 146 lots (Dec–Jun). 2 planned sales are pending, the largest $5.8M (Jeremy Chadwick). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $172.5M (2 lots) · 10 sellers, $472.2M (262 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Booth Bruce | 0 | – | 146 | $217.7M | Jun 29, 2026 |
| BVF Partners L P/IL | 0 | – | 4 | $173.7M | Jun 26, 2026 |
| Baker BROS. Advisors LP | 2 | $172.5M | 0 | – | Dec 11, 2025 |
| Mainolfi Nello | 0 | – | 21 | $34.9M | Jul 7, 2026 |
| Jeremy Chadwick | 0 | – | 29 | $15.6M | May 27, 2026 |
| Bruce N. Jacobs | 0 | – | 16 | $13.9M | Jun 30, 2026 |
| Gollob Jared | 0 | – | 18 | $9.1M | Mar 4, 2026 |
| Esposito Pamela | 0 | – | 12 | $3.1M | Mar 20, 2026 |
| Goodman Noah | 0 | – | 9 | $2.2M | Jul 1, 2026 |
| Ridloff Elena | 0 | – | 4 | $1.3M | May 11, 2026 |
| Jeffrey W. Albers | 0 | – | 3 | $745K | Dec 8, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| FMR LLC | 14.3% | 13G | May 6, 2026 | filing ↗ | |
| Abigail P. Johnson | 14.3% | 13G | May 6, 2026 | filing ↗ | |
| Baker BROS. Advisors LP | 10.9% | 13D | Dec 9, 2025 | filing ↗ | |
| Baker BROS. Advisors (GP) LLC | 10.9% | 13D | Dec 9, 2025 | filing ↗ | |
| Julian C. Baker | 10.9% | 13D | Dec 9, 2025 | filing ↗ | |
| Felix J. Baker | 10.9% | 13D | Dec 9, 2025 | filing ↗ | |
| T. ROWE Price Associates, Inc. | 7.1% | 13G | Nov 14, 2025 | filing ↗ | |
| T. ROWE Price Investment Management, Inc. | 6.7% | 13G | May 15, 2026 | filing ↗ | |
| BVF Partners L P/IL | 6.3% | 13D | Jun 26, 2026 | filing ↗ | |
| BVF INC/IL | 6.3% | 13D | Jun 26, 2026 | filing ↗ | |
| Mark N. Lampert | 6.3% | 13D | Jun 26, 2026 | filing ↗ | |
| BVF GP Holdings LLC | 5.8% | 13D | Jun 26, 2026 | filing ↗ | |
| Blackrock, Inc. | 5.4% | 13G | Jul 17, 2025 | filing ↗ | |
| Wellington Management Company LLP | 5.3% | 13G | Feb 10, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Mainolfi Nello | $6.0M | Jul 7, 2026 | filing ↗ |
| Mainolfi Nello | $9.1M | Jul 1, 2026 | filing ↗ |
| Noah Goodman | $389K | Jul 1, 2026 | filing ↗ |
| Bruce N. Jacobs | $8.4M | Jun 30, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $1.1M | Jun 29, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $7.2M | Jun 29, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $47.8M | Jun 26, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $6.7M | Jun 26, 2026 | filing ↗ |
| BVF Partners L P/IL | $189.9M | Jun 26, 2026 | filing ↗ |
| Noah Goodman | $499K | Jun 25, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $6.7M | Jun 25, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $48.0M | Jun 25, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $11.6M | Jun 24, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $1.6M | Jun 24, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $17K | Jun 23, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $123K | Jun 23, 2026 | filing ↗ |
| Noah Goodman | $226K | Jun 22, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $3.1M | Jun 22, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $22.1M | Jun 22, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $1.3M | Jun 18, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $9.1M | Jun 18, 2026 | filing ↗ |
| Jeremy Chadwick | $5.8M | Jun 17, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $1.1M | Jun 17, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $8.1M | Jun 17, 2026 | filing ↗ |
| Bruce Booth | $1.0M | Jun 17, 2026 | filing ↗ |
| Jeremy Chadwick | $1.0M | May 26, 2026 | filing ↗ |
| Jeremy G. Chadwick | $318K | May 26, 2026 | filing ↗ |
| Elena Ridloff | $258K | May 11, 2026 | filing ↗ |
| Mainolfi Nello | $2.5M | Apr 29, 2026 | filing ↗ |
| Jeremy Chadwick | $26K | Apr 22, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $8K | Apr 22, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $1K | Apr 22, 2026 | filing ↗ |
| Jeremy Chadwick | $117K | Apr 15, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $35K | Apr 15, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $247K | Apr 15, 2026 | filing ↗ |
| Jeremy Chadwick | $465K | Apr 14, 2026 | filing ↗ |
| Bruce Booth | $2.1M | Apr 14, 2026 | filing ↗ |
| Noah Goodman | $1.0M | Apr 9, 2026 | filing ↗ |
| Elena Ridloff | $383K | Apr 1, 2026 | filing ↗ |
| Jeremy Chadwick | $1.2M | Apr 1, 2026 | filing ↗ |
| Jeremy Chadwick | $604K | Mar 31, 2026 | filing ↗ |
| Elena Ridloff | $588K | Mar 31, 2026 | filing ↗ |
| Jeremy Chadwick | $9.0M | Mar 23, 2026 | filing ↗ |
| Pamela Esposito | $199K | Mar 20, 2026 | filing ↗ |
| Jeremy Chadwick | $2.2M | Mar 11, 2026 | filing ↗ |
| Atlas Venture Opportunity Fund I, LP | $2.3M | Mar 2, 2026 | filing ↗ |
| Atlas Venture Fund X, LP | $18.3M | Mar 2, 2026 | filing ↗ |
| Gollob Jared | $956K | Mar 2, 2026 | filing ↗ |
| Jeremy G. Chadwick | $559K | Mar 2, 2026 | filing ↗ |
| Bruce N. Jacobs | $1.1M | Mar 2, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jul 27, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 27, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 25, 2026 | filing ↗ |
| Other events (8.01) | Jun 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 25, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 24, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 5, 2026 | filing ↗ |
| Earnings (2.02) | Apr 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 30, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Mar 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 25, 2026 | filing ↗ |
| Material agreement (1.01) | Feb 26, 2026 | filing ↗ |
| Agreement terminated (1.02) | Feb 26, 2026 | filing ↗ |
| Other events (8.01) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Earnings (2.02) | Jan 13, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 13, 2026 | filing ↗ |
| Material agreement (1.01) | Dec 8, 2025 | filing ↗ |
| Other events (8.01) | Dec 8, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 8, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 8, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 8, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 8, 2025 | filing ↗ |
| Other events (8.01) | Dec 8, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 8, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |