ATLAS VENTURE ASSOCIATES X, L.P.
CIK 1742766 · last filed 2024-03-13
"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.
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Disclosed Exposure
$700.18M
Companies
6
Total Filings
12
Lifetime Open-Market Net
-$382.95M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 2 of 2
12 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-03-22 | Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Mixed | −2,179,500 | -$763.2K | EDGAR |
| 2018-07-26 | REPL | Conv (C) | +13,360,158 | $0 | EDGAR |
Showing 11–12 of 12
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.