Tango Therapeutics's three largest insider shareholders as of August 29, 2026 are Rock Ventures Iv, L.P. Third (TenPercentOwner, 13.39Mn shares), Rock Ventures Iv, L.P. Third (TenPercentOwner, 13.39Mn shares), Capital, Llc Ecor1 (TenPercentOwner, 10.63Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Rock Ventures Iv, L.P. Third | TenPercentOwner | 13,386,574 | 0 | 13,386,574 | 34.7% | 27 Oct, 2025 |
| 2 | Capital, Llc Ecor1 | TenPercentOwner | 0 | 10,630,736 | 10,630,736 | 27.5% | 08 Nov, 2024 |
| 3 | Capital, Llc Boxer | Other | 8,198,642 | 0 | 8,198,642 | 21.2% | 17 Oct, 2023 |
| 4 | Capital Management, Llc Boxer | Other | 0 | 3,610,642 | 3,610,642 | 9.4% | 07 Nov, 2024 |
| 5 | Barbara Weber | Director, Executive Chair | 1,629,254 | 0 | 1,629,254 | 4.2% | 04 Feb, 2026 |
| 6 | Malte Peters | President Ceo | 367,500 | 0 | 367,500 | 1.0% | 12 Jan, 2026 |
| 7 | Daniella Beckman | Chief Financial Officer | 184,297 | 0 | 184,297 | 0.5% | 04 Feb, 2026 |
| 8 | Alan Huang | Chief Scientific Officer | 167,584 | 0 | 167,584 | 0.4% | 02 Mar, 2023 |
| 9 | Adam Crystal | President, Rd | 115,743 | 0 | 115,743 | 0.3% | 05 Aug, 2026 |
| 10 | Investors, Llc Mva | Other | 108,793 | 0 | 108,793 | 0.3% | 02 Jul, 2024 |
| 11 | Douglas Barry | General Counsel | 66,014 | 0 | 66,014 | 0.2% | 06 Feb, 2025 |
| 12 | Mace Rothenberg | Director | 41,500 | 0 | 41,500 | 0.1% | 08 Jun, 2026 |
| 13 | John B Ketchum | Director | 24,937 | 0 | 24,937 | 0.1% | 08 Jun, 2026 |
| 14 | Sung Lee | Director | 22,300 | 0 | 22,300 | 0.1% | 01 May, 2026 |
| 15 | Alexis Borisy | Director | 17,500 | 0 | 17,500 | 0.0% | 09 Jun, 2025 |
| 16 | Lesley Ann Calhoun | Director | 16,500 | 0 | 16,500 | 0.0% | 08 Jun, 2026 |
| 17 | Robert Azelby | Director | 5,740 | 0 | 5,740 | 0.0% | 23 Jun, 2026 |
| 18 | Reid M Huber | Director | 5,000 | 0 | 5,000 | 0.0% | 08 Jun, 2023 |
| 19 | Aaron I. Davis | Director | 5,000 | 0 | 5,000 | 0.0% | 08 Jun, 2023 |
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 |
|---|---|---|---|---|---|---|---|---|
| 03 Aug, 2026 | Adam Crystal | President, Rd | Acquired M | 27,000 | $5.20 | $140.40K | 142,743 | Direct |
| 03 Aug, 2026 | Adam Crystal | President, Rd | Disposed S | 5,267 | $26.79 | $141.10K | 137,476 | Direct |
| 03 Aug, 2026 | Adam Crystal | President, Rd | Disposed S | 21,733 | $27.35 | $594.42K | 115,743 | Direct |
| 03 Aug, 2026 | Adam Crystal | President, Rd | Disposed M | 27,000 | $0.00 | $0 | 287,040 | Direct |
| 01 Jul, 2026 | Adam Crystal | President, Rd | Acquired M | 27,000 | $5.20 | $140.40K | 142,743 | Direct |
| 01 Jul, 2026 | Adam Crystal | President, Rd | Disposed S | 19,629 | $29.34 | $575.96K | 123,114 | Direct |
| 01 Jul, 2026 | Adam Crystal | President, Rd | Disposed S | 7,371 | $30.25 | $222.95K | 115,743 | Direct |
| 01 Jul, 2026 | Adam Crystal | President, Rd | Disposed M | 27,000 | $0.00 | $0 | 314,040 | Direct |
| 19 Jun, 2026 | Robert Azelby | Director | Acquired A | 5,740 | $0.00 | $0 | 5,740 | Direct |
| 19 Jun, 2026 | Robert Azelby | Director | Acquired A | 35,910 | $0.00 | $0 | 35,910 | Direct |
| 05 Jun, 2026 | Mace Rothenberg | Director | Acquired A | 4,000 | $0.00 | $0 | 41,500 | Direct |
| 05 Jun, 2026 | John B Ketchum | Director | Acquired A | 4,000 | $0.00 | $0 | 24,937 | Direct |
| 05 Jun, 2026 | Lesley Ann Calhoun | Director | Acquired A | 4,000 | $0.00 | $0 | 16,500 | Direct |
| 05 Jun, 2026 | Mace Rothenberg | Director | Acquired A | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 05 Jun, 2026 | Lesley Ann Calhoun | Director | Acquired A | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 05 Jun, 2026 | John B Ketchum | Director | Acquired A | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 01 Jun, 2026 | Adam Crystal | President, Rd | Acquired M | 27,000 | $5.20 | $140.40K | 142,743 | Direct |
| 01 Jun, 2026 | Adam Crystal | President, Rd | Disposed S | 6,140 | $22.25 | $136.63K | 136,603 | Direct |
| 01 Jun, 2026 | Adam Crystal | President, Rd | Disposed S | 20,860 | $23.06 | $480.94K | 115,743 | Direct |
| 01 Jun, 2026 | Adam Crystal | President, Rd | Disposed M | 27,000 | $0.00 | $0 | 341,040 | Direct |