Casdin Capital, LLC
CIK 1534261 · last filed 2026-06-08
"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
$517.41M
Companies
5
Total Filings
22
Lifetime Open-Market Net
$354.06M
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 |
|---|---|---|---|---|---|---|---|
| WGSWW | Director | 39,764 | $0.00 | $8 | $56.27M | 5 | 2026-06-08 |
| LAB | Director | 16,840,699 | $0.79 | $13.38M | $112.43M | 4 | 2025-11-26 |
| BLFS | 10%+ Owner | 15,264,330 | $31.98 | $488.15M | $177.05M | 9 | 2025-08-21 |
| TNYA | Director | 6,078,860 | $0.76 | $4.60M | $63.96M | 2 | 2022-11-25 |
| MXCT | 10%+ Owner | 10,735,786 | $1.05 | $11.27M | -$55.65M | 1 | 2022-07-06 |
Recent Filings · Page 2 of 3
22 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-05-15 | WGSWW | Buy (P) | +250,000 | $5.83M | EDGAR |
| 2024-03-06 | WGSWW | Buy (P) | +204,500 | $1.79M | EDGAR |
| 2023-10-23 | BLFS | Buy (P) | +3,708,660 | $41.50M | EDGAR |
| 2023-08-11 | BLFS | Buy (P) | +233,860 | $3.09M | EDGAR |
| 2023-05-19 | LAB | Buy (P) | +7,200,000 | $15.79M | EDGAR |
| 2023-05-19 | BLFS | Other (J) | +525,712 | $0 | EDGAR |
| 2022-11-25 | TNYA | Buy (P) | +4,984,084 | $12.96M | EDGAR |
| 2022-07-06 | MXCT | Sell (S) | −12,942,192 | -$55.65M | EDGAR |
| 2021-08-04 | TNYA | Mixed | +14,347,272 | $51.00M | EDGAR |
| 2020-11-27 | BLFS | Buy (P) | +6,400,000 | $144.00M | EDGAR |
Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.