Tappin Matthew — SEC Form 4 filings
SEC reporting owner CIK 1986259. 26 Form 4 filings on record with FilingPulse; latest filed 2026-07-02.
Transaction summary — filings shown
Covers all 26 filings on record, filed 2024-02-16 to 2026-07-02. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 20 legs across 17 filings — 145,823 shares, $417,814 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 39.
- Largest priced transaction: sale of 9,584 shares @ $17.70 ($169,637) in STEM, INC., filed 2025-11-24.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| STEM, INC. (STEM) | President, Software Products | 26 | — | 20 legs · 145,823 sh · $417,814 | 39 |
Form 4 filings — Tappin Matthew
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-07-02 | 4 | STEM, INC. (STEM) | Option exercise (M): 5,000 @ $7.81 · Option exercise (M): 2,750 @ $7.81 · Sale (S): 996 @ $7.85 · Option exercise (M): 2,750 (derivative) @ $0 · Option exercise (M): 5,000 (derivative) @ $0 | EDGAR |
| 2026-03-13 | 4 | STEM, INC. (STEM) | Sale (S): 402 @ $10.83 | EDGAR |
| 2026-03-10 | 4 | STEM, INC. (STEM) | Option exercise (M): 1,458 · Sale (S): 655 @ $11.12 · Option exercise (M): 1,458 (derivative) @ $0 | EDGAR |
| 2026-03-04 | 4 | STEM, INC. (STEM) | Sale (S): 300 @ $9.67 · Sale (S): 185 @ $10 | EDGAR |
| 2026-03-02 | 4 | STEM, INC. (STEM) | Option exercise (M): 670 · Grant/award (A): 25,800 (derivative) @ $0 · Grant/award (A): 17,200 (derivative) @ $0 · Option exercise (M): 670 (derivative) @ $0 | EDGAR |
| 2026-02-23 | 4 | STEM, INC. (STEM) | Sale (S): 366 @ $11.40 | EDGAR |
| 2026-02-19 | 4 | STEM, INC. (STEM) | Tax withholding (F): 522 @ $11.30 | EDGAR |
| 2026-02-18 | 4 | STEM, INC. (STEM) | Option exercise (M): 1,253 · Option exercise (M): 1,253 (derivative) @ $0 | EDGAR |
| 2025-11-24 | 4 | STEM, INC. (STEM) | Sale (S): 9,584 @ $17.70 | EDGAR |
| 2025-11-12 | 4 | STEM, INC. (STEM) | Option exercise (M): 15,000 · Tax withholding (F): 5,416 @ $18.27 · Option exercise (M): 15,000 (derivative) @ $0 | EDGAR |
| 2025-07-30 | 4 | STEM, INC. (STEM) | Grant/award (A): 10,000 (derivative) @ $0 · Grant/award (A): 10,000 (derivative) @ $0 | EDGAR |
| 2025-07-02 | 4 | STEM, INC. (STEM) | Grant/award (A): 11,000 (derivative) @ $0 · Grant/award (A): 5,500 (derivative) @ $0 · Grant/award (A): 5,500 (derivative) @ $0 | EDGAR |
| 2025-06-18 | 4 | STEM, INC. (STEM) | Option exercise (M): 2,775 @ $0 · Sale (S): 1,164 @ $0.45 · Sale (S): 20,823 @ $0.45 · Option exercise (M): 2,775 (derivative) @ $0 | EDGAR |
| 2025-03-17 | 4 | STEM, INC. (STEM) | Option exercise (M): 13,397 @ $0 · Sale (S): 5,645 @ $0.42 · Option exercise (M): 29,167 @ $0 · Sale (S): 13,070 @ $0.40 · Option exercise (M): 13,397 (derivative) @ $0 · Option exercise (M): 29,167 (derivative) @ $0 | EDGAR |
| 2025-02-21 | 4 | STEM, INC. (STEM) | Option exercise (M): 24,316 @ $0 · Sale (S): 8,130 @ $0.63 · Option exercise (M): 24,316 (derivative) @ $0 | EDGAR |
| 2024-11-01 | 4 | STEM, INC. (STEM) | Grant/award (A): 300,000 (derivative) @ $0 | EDGAR |
| 2024-05-30 | 4 | STEM, INC. (STEM) | Sale (S): 1,388 @ $1.32 | EDGAR |
| 2024-05-28 | 4 | STEM, INC. (STEM) | Option exercise (M): 2,775 @ $0 · Option exercise (M): 2,775 (derivative) @ $0 | EDGAR |
| 2024-05-28 | 4 | STEM, INC. (STEM) | Grant/award (A): 87,500 (derivative) @ $0 | EDGAR |
| 2024-03-20 | 4 | STEM, INC. (STEM) | Sale (S): 26,640 @ $1.82 | EDGAR |
| 2024-03-12 | 4 | STEM, INC. (STEM) | Sale (S): 24,899 @ $2.19 | EDGAR |
| 2024-03-07 | 4 | STEM, INC. (STEM) | Sale (S): 3,837 @ $2.41 | EDGAR |
| 2024-03-05 | 4 | STEM, INC. (STEM) | Option exercise (M): 13,398 @ $0 · Grant/award (A): 51,539 @ $0 · Sale (S): 5,724 @ $2.48 · Option exercise (M): 13,398 (derivative) @ $0 | EDGAR |
| 2024-02-21 | 4 | STEM, INC. (STEM) | Sale (S): 6,857 @ $3.05 | EDGAR |
| 2024-02-20 | 4 | STEM, INC. (STEM) | Option exercise (M): 24,315 @ $0 · Sale (S): 10,602 @ $3.17 · Option exercise (M): 24,315 (derivative) @ $0 · Grant/award (A): 45,024 (derivative) @ $0 | EDGAR |
| 2024-02-16 | 4 | STEM, INC. (STEM) | Sale (S): 4,556 @ $3.15 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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