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 4 of 6
59 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2022-04-18 | ARVN | Mixed | −4,772 | -$1.13M | EDGAR |
| 2022-04-13 | SNDX | Exer (M) | +73,673 | $530.4K | EDGAR |
| 2022-04-05 | SNDX | Mixed | −30,500 | -$1.02M | EDGAR |
| 2022-02-03 | SNDX | Grant (A) | — | $0 | EDGAR |
| 2022-01-19 | ARVN | Mixed | −4,772 | -$1.12M | EDGAR |
| 2021-12-20 | SNDX | Mixed | — | -$319.9K | EDGAR |
| 2021-09-21 | SNDX | Mixed | — | -$904.8K | EDGAR |
| 2021-06-10 | ARVN | Grant (A) | — | $0 | EDGAR |
| 2021-05-14 | Repare Therapeutics Inc. (RPTX) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-05-04 | HOWL | 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.