Lewis T Williams
CIK 1475714 · Executive Chairman · last filed 2026-02-18
"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
$2.84M
Companies
6
Total Filings
69
Lifetime Open-Market Net
-$16.49M
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 |
|---|---|---|---|---|---|---|---|
| PTGX | Director | 25,825 | $109.78 | $2.84M | -$1.48M | 11 | 2026-02-18 |
| Arcellx, Inc. (ACLX) Delisted | Director | 2,095,114 | $115.07 | $241.08M | $0 | 1 | 2022-02-09 |
| Neurogene Inc. (NLTX) Delisted | Director | — | $13.96 | — | $0 | 3 | 2021-05-13 |
| FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Director | 455,336 | $178.75 | $81.39M | -$1.51M | 19 | 2019-09-04 |
| FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | President, CEO and Chairman | 421,828 | $38.00 | $16.03M | -$13.49M | 20 | 2016-05-13 |
| BECKMAN COULTER INC (BEC) Delisted | Director | 1,372 | — | — | $0 | 14 | 2011-06-22 |
Recent Filings · Page 5 of 7
69 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2016-03-03 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Mixed | — | -$677.3K | EDGAR |
| 2016-02-08 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Mixed | — | -$2.05M | EDGAR |
| 2015-12-28 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Gift (G) | −953 | $0 | EDGAR |
| 2015-11-18 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Grant (A) | +50,000 | $0 | EDGAR |
| 2015-10-26 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Gift (G) | −3,337 | $0 | EDGAR |
| 2015-10-19 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Sell (S) | −72,352 | -$1.97M | EDGAR |
| 2015-09-23 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Sell (S) | −2,648 | -$58.4K | EDGAR |
| 2015-08-21 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Grant (A) | +75,000 | $0 | EDGAR |
| 2015-08-19 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Grant (A) | — | $0 | EDGAR |
| 2015-06-24 | FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Sell (S) | −75,000 | -$1.85M | 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.