Atlas Venture Fund X, L.P.
CIK 1628098 · last filed 2024-01-25
"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
$662.06M
Companies
6
Total Filings
15
Lifetime Open-Market Net
-$46.33M
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 |
|---|---|---|---|---|---|---|---|
| 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 · Page 2 of 2
15 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-06-18 | REPL | Other (J) | −445,339 | $0 | EDGAR |
| 2019-07-29 | Tectonic Therapeutic, Inc. (AVRO) Delisted | — | — | $0 | EDGAR |
| 2019-07-23 | Tectonic Therapeutic, Inc. (AVRO) Delisted | Buy (P) | +2,432,433 | $45.00M | EDGAR |
| 2019-02-14 | REPL | Other (J) | −631,073 | $0 | EDGAR |
| 2018-06-27 | Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Conv (C) | +14,240,628 | $0 | EDGAR |
Showing 11–15 of 15
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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.