Atlas Venture Fund X, L.P.
CIK 1628098 · last filed 2024-01-25
Atlas Venture Fund X, L.P. is a corporate insider who has filed 15 SEC Form 4 insider transactions across 6 companies since 2018. The most recent filing shows the insider sold $91.3M of IRON on Jan 25, 2024. Across all open-market trades the lifetime net is −$46.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $662.1M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$662.06M
6
15
-$46.33M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| IRON | 10%+ Owner | 2,105,846 | $67.99 | $143.18M | -$91.33M | 1 | 2024-01-25 |
| Generation Bio Co. (GBIO) Delisted | 10%+ Owner | 8,278,876 | $5.34 | $44.21M | $0 | 4 | 2021-09-21 |
| KYMR | 10%+ Owner | 5,763,012 | $86.20 | $496.80M | $0 | 2 | 2021-05-18 |
| Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | 10%+ Owner | 3,148,399 | $11.19 | $35.24M | $0 | 2 | 2021-02-16 |
| REPL | 10%+ Owner | 2,486,296 | $8.88 | $22.08M | $0 | 4 | 2020-09-17 |
| Tectonic Therapeutic, Inc. (AVRO) Delisted | 10%+ Owner | 4,756,478 | $16.80 | $79.91M | $45.00M | 2 | 2019-07-29 |
Recent Filings
15 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-01-25 | IRON | Sell (S) | −1,350,000 | -$91.33M | EDGAR |
| 2021-09-21 | Generation Bio Co. (GBIO) Delisted | Other (J) | −2,200,000 | $0 | EDGAR |
| 2021-06-21 | Generation Bio Co. (GBIO) Delisted | Other (J) | −2,200,000 | $0 | EDGAR |
| 2021-05-18 | KYMR | Other (J) | −1,122,619 | $0 | EDGAR |
| 2021-03-18 | Generation Bio Co. (GBIO) Delisted | Other (J) | −1,000,000 | $0 | EDGAR |
| 2021-02-22 | KYMR | Other (J) | −1,063,351 | $0 | EDGAR |
| 2021-02-16 | Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Other (J) | −968,726 | $0 | EDGAR |
| 2020-12-17 | Generation Bio Co. (GBIO) Delisted | Other (J) | −2,303,764 | $0 | EDGAR |
| 2020-09-17 | REPL | Other (J) | −445,339 | $0 | EDGAR |
| 2020-07-07 | REPL | Other (J) | −445,339 | $0 | EDGAR |