Steven J Mento
CIK 1324466 · President and CEO · last filed 2026-01-06
"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
$0
Companies
4
Total Filings
43
Lifetime Open-Market Net
-$1.52M
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 |
|---|---|---|---|---|---|---|---|
| DRMAW | Director | — | $0.01 | — | $0 | 5 | 2026-01-06 |
| Histogen Inc. (HSTO) Delisted | President and CEO | 4,114 | $0.21 | $885 | $0 | 7 | 2023-03-14 |
| Histogen Inc. (CNAT) Delisted | President, CEO & Director | 48,708 | — | — | $151.8K | 10 | 2019-08-01 |
| SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Director | 46,546 | $0.18 | $8.3K | -$1.67M | 21 | 2018-06-12 |
Recent Filings · Page 2 of 5
43 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 |
|---|---|---|---|---|---|
| 2020-10-09 | Histogen Inc. (HSTO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-05-27 | Histogen Inc. (HSTO) Delisted | Mixed | +33,572 | -$17.6K | EDGAR |
| 2019-08-01 | Histogen Inc. (CNAT) Delisted | Mixed | — | $0 | EDGAR |
| 2019-02-11 | Histogen Inc. (CNAT) Delisted | Grant (A) | — | $0 | EDGAR |
| 2018-06-12 | SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Grant (A) | +2,500 | $0 | EDGAR |
| 2018-05-07 | Histogen Inc. (CNAT) Delisted | Exer (M) | +60,000 | $59.4K | EDGAR |
| 2018-04-04 | SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Mixed | +2,785 | -$55.1K | EDGAR |
| 2018-03-05 | SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Mixed | +5,567 | -$137.2K | EDGAR |
| 2018-02-05 | SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Mixed | +3,480 | -$103.4K | EDGAR |
| 2018-02-05 | Histogen Inc. (CNAT) Delisted | Grant (A) | — | $0 | 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.