Kymera Therapeutics's top three insider shareholders as of September 29, 2026 are Bros. Advisors Lp Baker (Director, 7.96Mn shares), Venture Fund X, L.P. Atlas (TenPercentOwner, 5.50Mn shares), Bruce Booth (Director, 1.05Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Bros. Advisors Lp Baker | Director, TenPercentOwner | 0 | 7,955,916 | 7,955,916 | 48.6% | 11 Dec, 2025 |
| 2 | Venture Fund X, L.P. Atlas | TenPercentOwner | 4,676,075 | 828,830 | 5,504,905 | 33.6% | 13 Mar, 2024 |
| 3 | Bruce Booth | Director | 0 | 1,282,007 | 1,282,007 | 7.8% | 02 Jul, 2026 |
| 4 | Nello Mainolfi | Chief Executive Officer | 666,568 | 0 | 666,568 | 4.1% | 07 Jul, 2026 |
| 5 | Partners L P/Il Bvf | Director, Other | 240,123 | 78,787 | 318,910 | 1.9% | 26 Jun, 2026 |
| 6 | Bruce N. Jacobs | Chief Financial Officer | 244,883 | 0 | 244,883 | 1.5% | 02 Jul, 2026 |
| 7 | Jared Gollob | Chief Medical Officer | 117,134 | 0 | 117,134 | 0.7% | 04 Mar, 2026 |
| 8 | Ellen Chiniara | Chief Legal Officer | 80,085 | 0 | 80,085 | 0.5% | 03 Mar, 2025 |
| 9 | Brian Adams | Chief Legal Officer | 50,254 | 0 | 50,254 | 0.3% | 04 Sep, 2026 |
| 10 | Noah Goodman | Chief Business Officer | 47,179 | 0 | 47,179 | 0.3% | 02 Jul, 2026 |
| 11 | Jeremy G Chadwick | Chief Operating Officer | 44,018 | 0 | 44,018 | 0.3% | 27 May, 2026 |
| 12 | Terence Rooney | Chief Medical Officer | 38,000 | 0 | 38,000 | 0.2% | 27 Jul, 2026 |
| 13 | Elaine Caughey | Chief Business Officer | 18,986 | 0 | 18,986 | 0.1% | 03 Mar, 2023 |
| 14 | Pamela Esposito | Director | 1,000 | 0 | 1,000 | 0.0% | 19 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 04 Sep, 2026 | Brian Adams | Chief Legal Officer | Disposed S | 1,209 | $115.55 | $139.70K | 55,416 | Direct |
| 04 Sep, 2026 | Brian Adams | Chief Legal Officer | Disposed S | 3,025 | $116.81 | $353.35K | 52,391 | Direct |
| 04 Sep, 2026 | Brian Adams | Chief Legal Officer | Disposed S | 2,137 | $117.57 | $251.25K | 50,254 | Direct |
| 27 Jul, 2026 | Terence Rooney | Chief Medical Officer | Acquired A | 38,000 | $0.00 | $0 | 38,000 | Direct |
| 27 Jul, 2026 | Terence Rooney | Chief Medical Officer | Acquired A | 76,000 | $0.00 | $0 | 76,000 | Direct |
| 07 Jul, 2026 | Nello Mainolfi | Chief Executive Officer | Acquired M | 50,000 | $2.08 | $104.00K | 716,568 | Direct |
| 07 Jul, 2026 | Nello Mainolfi | Chief Executive Officer | Disposed S | 50,000 | $119.00 | $5.95Mn | 666,568 | Direct |
| 07 Jul, 2026 | Nello Mainolfi | Chief Executive Officer | Disposed M | 45,559 | $0.00 | $0 | 90,000 | Direct |
| 07 Jul, 2026 | Nello Mainolfi | Chief Executive Officer | Disposed M | 4,441 | $0.00 | $0 | 14,284 | Direct |
| 01 Jul, 2026 | Noah Goodman | Chief Business Officer | Disposed S | 3,389 | $114.29 | $387.33K | 47,179 | Direct |
| 29 Jun, 2026 | Bruce Booth | Director | Disposed S | 5,549 | $105.78 | $586.97K | 2,446,375 | Indirect |
| 30 Jun, 2026 | Bruce N. Jacobs | Chief Financial Officer | Acquired M | 61,378 | $5.33 | $327.14K | 321,992 | Direct |
| 01 Jul, 2026 | Nello Mainolfi | Chief Executive Officer | Acquired M | 80,000 | $2.08 | $166.40K | 746,568 | Direct |
| 29 Jun, 2026 | Bruce Booth | Director | Disposed S | 14,798 | $106.63 | $1.58Mn | 2,431,577 | Indirect |
| 01 Jul, 2026 | Nello Mainolfi | Chief Executive Officer | Disposed S | 1,883 | $112.80 | $212.41K | 744,685 | Direct |
| 30 Jun, 2026 | Bruce N. Jacobs | Chief Financial Officer | Disposed S | 1,500 | $110.54 | $165.81K | 320,492 | Direct |
| 29 Jun, 2026 | Bruce Booth | Director | Disposed S | 19,419 | $107.76 | $2.09Mn | 2,412,158 | Indirect |
| 30 Jun, 2026 | Bruce N. Jacobs | Chief Financial Officer | Disposed S | 1,700 | $111.57 | $189.66K | 318,792 | Direct |
| 01 Jul, 2026 | Nello Mainolfi | Chief Executive Officer | Disposed S | 6,626 | $113.98 | $755.20K | 738,059 | Direct |
| 29 Jun, 2026 | Bruce Booth | Director | Disposed S | 10,848 | $108.28 | $1.17Mn | 2,401,310 | Indirect |