| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
10% Owner
7 companies
Atlas Venture Fund X, L.P. is 10% Owner at TECX, with reported holdings spanning 7 companies. From June 2018 to February 2026, the filings on record show 1 open-market purchase and 11 sales.
Our model assigns Atlas Venture Fund X, L.P. a middling insider score of 69/100, based on 22 past trades. Over a 12-month horizon, 86.4% of those trades were profitable, with an average 12-month return of +20.3%.
Atlas Venture Fund X, L.P.'s largest disclosed position is in DNTH as 10% Owner, worth about $260.4M. The DNTH filings lean toward selling, a net 14,245 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|
| Jul 19, 2019 | TECX Tectonic Therapeutic, Inc. | 10% Owner | Buy | 810,811 | $18.50 | $15,000,003.50 | +17.0% | |
| Mar 20, 2019 | DNTH Dianthus Therapeutics, Inc. /de/ | 10% Owner | Sell | 14,245 | $17.86 | $254,415.70 | -100% |