ATLAS VENTURE ASSOCIATES X, L.P.
CIK 1742766 · last filed 2024-03-13
ATLAS VENTURE ASSOCIATES X, L.P. is a corporate insider who has filed 12 SEC Form 4 insider transactions across 6 companies since 2018. The most recent filing shows the insider sold $89.5M of KYMR on Mar 13, 2024. Across all open-market trades the lifetime net is −$383.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $700.2M 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.
$700.18M
6
12
-$382.95M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| KYMR | 10%+ Owner | 5,812,200 | $86.20 | $501.04M | -$184.55M | 5 | 2024-03-13 |
| IRON | 10%+ Owner | 2,347,367 | $67.99 | $159.60M | -$183.18M | 2 | 2023-12-14 |
| Generation Bio Co. (GBIO) Delisted | 10%+ Owner | 9,111,939 | $5.34 | $48.66M | -$14.46M | 2 | 2021-04-14 |
| Tectonic Therapeutic, Inc. (AVRO) Delisted | 10%+ Owner | 3,710,052 | $16.80 | $62.33M | $0 | 1 | 2020-02-18 |
| Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | 10%+ Owner | 4,117,125 | $11.19 | $46.09M | -$763.2K | 1 | 2019-03-22 |
| REPL | 10%+ Owner | 4,453,386 | $8.88 | $39.55M | $0 | 1 | 2018-07-26 |
Recent Filings
12 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-03-13 | KYMR | Sell (S) | −2,120,142 | -$89.47M | EDGAR |
| 2023-12-14 | IRON | Sell (S) | −1,140,978 | -$70.11M | EDGAR |
| 2023-08-16 | IRON | Sell (S) | −2,154,000 | -$113.07M | EDGAR |
| 2022-11-04 | KYMR | Sell (S) | −1,320,096 | -$39.62M | EDGAR |
| 2021-08-12 | KYMR | Sell (S) | −484,266 | -$29.54M | EDGAR |
| 2021-04-14 | Generation Bio Co. (GBIO) Delisted | Sell (S) | −281,364 | -$7.29M | EDGAR |
| 2021-04-09 | Generation Bio Co. (GBIO) Delisted | Sell (S) | −254,190 | -$7.17M | EDGAR |
| 2021-03-16 | KYMR | Sell (S) | −458,700 | -$25.92M | EDGAR |
| 2020-08-25 | KYMR | Conv (C) | +49,855,620 | $0 | EDGAR |
| 2020-02-18 | Tectonic Therapeutic, Inc. (AVRO) Delisted | Other (J) | −1,046,426 | $0 | EDGAR |