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 3 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 |
|---|---|---|---|---|---|
| 2020-05-18 | BLFS | Buy (P) | +7,619,048 | $80.00M | EDGAR |
| 2019-11-21 | BLFS | Buy (P) | +160,000 | $2.47M | EDGAR |
Showing 21–22 of 22
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Page 3 of 3
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.