Kempster Thomas — SEC Form 4 filings
SEC reporting owner CIK 1688904. 13 Form 4 filings on record with FilingPulse; latest filed 2026-09-14.
Transaction summary — filings shown
Covers all 13 filings on record, filed 2024-03-05 to 2026-09-14. 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): 5 legs across 5 filings — 15,645 shares, $64,002 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 23.
- Largest priced transaction: sale of 6,846 shares @ $4.99 ($34,185) in Data Storage Corp, filed 2025-12-12.
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 |
|---|---|---|---|---|---|
| Data Storage Corp (DTST) | Director | 13 | — | 5 legs · 15,645 sh · $64,002 | 23 |
Form 4 filings — Kempster Thomas
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-14 | 4 | Data Storage Corp (DTST) | Sale (S): 3,500 @ $2.92 | EDGAR |
| 2026-09-04 | 4 | Data Storage Corp (DTST) | Option exercise (M): 10,000 @ $0 · Grant/award (A): 12,000 @ $0 · Option exercise (M): 10,000 (derivative) @ $0 | EDGAR |
| 2026-02-02 | 4 | Data Storage Corp (DTST) | Grant/award (A): 10,000 (derivative) @ $0 | EDGAR |
| 2026-01-16 | 4 | Data Storage Corp (DTST) | Disposition to issuer (D): 881,472 @ $5.20 | EDGAR |
| 2025-12-12 | 4 | Data Storage Corp (DTST) | Sale (S): 6,846 @ $4.99 | EDGAR |
| 2025-09-15 | 4 | Data Storage Corp (DTST) | Option exercise (M): 4,902 · Option exercise (M): 8,334 · Option exercise (M): 4,902 (derivative) @ $0 · Option exercise (M): 8,334 (derivative) @ $0 | EDGAR |
| 2025-08-05 | 4 | Data Storage Corp (DTST) | Option exercise (M): 16,666 @ $2 · Option exercise (M): 9,804 @ $1.96 · Option exercise (M): 16,666 (derivative) @ $0 · Option exercise (M): 9,804 (derivative) @ $0 | EDGAR |
| 2025-04-14 | 4 | Data Storage Corp (DTST) | Option exercise (M): 8,333 · Sale (S): 2,333 @ $3.25 · Option exercise (M): 8,333 (derivative) | EDGAR |
| 2025-03-04 | 4 | Data Storage Corp (DTST) | Option exercise (M): 4,902 · Sale (S): 1,373 @ $3.83 · Option exercise (M): 4,902 (derivative) | EDGAR |
| 2025-01-06 | 4 | Data Storage Corp (DTST) | Sale (S): 1,593 @ $4.23 | EDGAR |
| 2024-12-12 | 4 | Data Storage Corp (DTST) | Option exercise (M): 2,500 @ $2.40 · Option exercise (M): 2,500 (derivative) @ $0 | EDGAR |
| 2024-04-12 | 4 | Data Storage Corp (DTST) | Option exercise (M): 8,333 · Option exercise (M): 8,333 (derivative) | EDGAR |
| 2024-03-05 | 4 | Data Storage Corp (DTST) | Option exercise (M): 4,902 · Option exercise (M): 4,902 (derivative) | 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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