Over the 90-day window ending December 12, 2025, Lexeo Therapeutics's three dominant insider ownership positions are held by TenPercentOwner Capital Partners Iv, Llc Longitude (2.57Mn shares), Chief Executive Officer Richard Nolan Townsend (240.99K shares), Chief Medical Officer Eric Adler (72.65K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Capital Partners Iv, Llc Longitude | 2,567,100 | 09 Nov, 2023 | |
| Fund Vi, L.P. Omega | 2,157,623 | 09 Nov, 2023 | |
| Invest A/S Lundbeckfond | 1,835,959 | 09 Nov, 2023 | |
| Richard Nolan Townsend | Chief Executive Officer | 240,991 | 20 Nov, 2025 |
| Eric Adler | Chief Medical Officer | 72,646 | 20 Nov, 2025 |
| Jenny Robertson | Chief Legal Officer | 68,381 | 20 Nov, 2025 |
| Tai Sandi See | Chief Development Officer | 65,476 | 20 Nov, 2025 |
| Jose Manuel Otero | Chief Technical Officer | 63,476 | 20 Nov, 2025 |
| Louis Edward Tamayo | Chief Financial Officer | 45,000 | 03 Sep, 2025 |
| Kyle Rasbach | Chief Financial Officer | 40,875 | 22 Jan, 2025 |
| Paula H Cholmondeley | 30,627 | 26 Nov, 2024 | |
| Paul Mccormac | Chief Technical Officer | 17,349 | 09 Nov, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 18 Nov, 2025 | Richard Nolan Townsend | Common Stock | D | 1,127 | $9.27 | 240,991 | D | S |
| 18 Nov, 2025 | Eric Adler | Common Stock | D | 615 | $9.27 | 72,646 | D | S |
| 18 Nov, 2025 | Jenny Robertson | Common Stock | D | 549 | $9.27 | 68,381 | D | S |
| 18 Aug, 2025 | Jose Manuel Otero | Common Stock | D | 721 | $9.27 | 63,476 | D | S |
| 18 Nov, 2025 | Tai Sandi See | Common Stock | D | 386 | $9.27 | 65,476 | D | S |
| 15 Oct, 2025 | Tai Sandi See | Common Stock | A | 10,890 | $0.00 | 69,750 | D | A |
| 15 Oct, 2025 | Eric Adler | Common Stock | A | 9,570 | $0.00 | 76,643 | D | A |
| 15 Oct, 2025 | Jose Manuel Otero | Common Stock | A | 5,940 | $0.00 | 66,312 | D | A |
| 15 Oct, 2025 | Richard Nolan Townsend | Common Stock | A | 33,000 | $0.00 | 255,251 | D | A |
| 15 Oct, 2025 | Jenny Robertson | Common Stock | A | 9,900 | $0.00 | 72,456 | D | A |
| 17 Oct, 2025 | Eric Adler | Common Stock | D | 3,344 | $8.94 | 73,299 | D | S |
| 17 Oct, 2025 | Tai Sandi See | Common Stock | D | 3,844 | $8.94 | 65,906 | D | S |
| 17 Oct, 2025 | Jose Manuel Otero | Common Stock | D | 2,091 | $8.94 | 64,221 | D | S |
| 17 Oct, 2025 | Jenny Robertson | Common Stock | D | 3,486 | $8.94 | 68,970 | D | S |
| 17 Oct, 2025 | Richard Nolan Townsend | Common Stock | D | 12,985 | $8.94 | 242,266 | D | S |
| 17 Oct, 2025 | Eric Adler | Common Stock | D | 38 | $9.56 | 73,261 | D | S |
| 17 Oct, 2025 | Jenny Robertson | Common Stock | D | 40 | $9.56 | 68,930 | D | S |
| 17 Oct, 2025 | Jose Manuel Otero | Common Stock | D | 24 | $9.56 | 64,197 | D | S |
| 17 Oct, 2025 | Richard Nolan Townsend | Common Stock | D | 148 | $9.56 | 242,118 | D | S |
| 17 Oct, 2025 | Tai Sandi See | Common Stock | D | 44 | $9.56 | 65,862 | D | S |