Briggs Morrison
CIK 1654430 · President, Head of R&D · last filed 2026-06-09
"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
$1.36M
Companies
8
Total Filings
59
Lifetime Open-Market Net
-$27.68M
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 |
|---|---|---|---|---|---|---|---|
| CRSP | Director | — | $49.80 | — | $0 | 2 | 2026-06-09 |
| ARVN | Director | 96,021 | $7.58 | $727.8K | -$2.18M | 13 | 2026-03-09 |
| HOWL | Director | — | $0.38 | — | $0 | 5 | 2025-06-13 |
| CARM | Director | — | $0.00 | — | $0 | 2 | 2024-06-27 |
| Repare Therapeutics Inc. (RPTX) Delisted | Director | 4,800 | $2.65 | $12.7K | $96.0K | 5 | 2024-06-20 |
| SNDX | Director | 34,836 | $18.25 | $635.8K | -$25.70M | 27 | 2024-02-09 |
| Codiak BioSciences, Inc. (CDAK) Delisted | Director | 4,761 | $0.06 | $271 | $100.0K | 2 | 2021-02-17 |
| NXTC | Director | — | $2.08 | — | $0 | 2 | 2020-06-15 |
Recent Filings · Page 5 of 6
59 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-02-17 | Codiak BioSciences, Inc. (CDAK) Delisted | Buy (P) | +4,761 | $100.0K | EDGAR |
| 2021-02-10 | SNDX | Mixed | — | -$469.3K | EDGAR |
| 2021-02-05 | SNDX | Mixed | +1,771 | $21.3K | EDGAR |
| 2020-11-12 | SNDX | Mixed | — | -$1.03M | EDGAR |
| 2020-10-15 | Codiak BioSciences, Inc. (CDAK) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-06-25 | Repare Therapeutics Inc. (RPTX) Delisted | Buy (P) | +4,800 | $96.0K | EDGAR |
| 2020-06-15 | NXTC | Grant (A) | — | $0 | EDGAR |
| 2020-06-04 | ARVN | Grant (A) | — | $0 | EDGAR |
| 2020-03-25 | ARVN | Buy (P) | +2,500 | $95.5K | EDGAR |
| 2020-02-14 | SNDX | Grant (A) | — | $0 | EDGAR |
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.