Brown Matthew Charles — SEC Form 4 filings
SEC reporting owner CIK 1766979. 19 Form 4 filings on record with FilingPulse; latest filed 2026-08-25.
Transaction summary — filings shown
Covers all 19 filings on record, filed 2024-01-17 to 2026-08-25. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 1 leg across 1 filing — 12,000 shares, $258,480 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 5 legs across 5 filings — 10,847 shares, $1,062,171 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 28.
- Largest priced transaction: sale of 3,811 shares @ $111.53 ($425,041) in Altair Engineering Inc., filed 2025-02-27.
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 |
|---|---|---|---|---|---|
| Altair Engineering Inc. (ALTR) | Chief Financial Officer | 12 | — | 5 legs · 10,847 sh · $1,062,171 | 14 |
| Tenable Holdings, Inc. (TENB) | Chief Financial Officer | 7 | 1 leg · 12,000 sh · $258,480 | — | 14 |
Form 4 filings — Brown Matthew Charles
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-25 | 4 | Tenable Holdings, Inc. (TENB) | Option exercise (M): 14,544 @ $0 · Tax withholding (F): 7,400 @ $34.38 · Option exercise (M): 14,544 (derivative) @ $0 | EDGAR |
| 2026-05-26 | 4 | Tenable Holdings, Inc. (TENB) | Option exercise (M): 14,544 @ $0 · Tax withholding (F): 5,219 @ $25.17 · Option exercise (M): 14,544 (derivative) @ $0 | EDGAR |
| 2026-05-05 | 4 | Tenable Holdings, Inc. (TENB) | Purchase (P): 12,000 @ $21.54 | EDGAR |
| 2026-02-27 | 4 | Tenable Holdings, Inc. (TENB) | Grant/award (A): 141,898 (derivative) @ $0 | EDGAR |
| 2026-02-25 | 4 | Tenable Holdings, Inc. (TENB) | Option exercise (M): 14,544 @ $0 · Tax withholding (F): 5,269 @ $17.55 · Option exercise (M): 14,544 (derivative) @ $0 | EDGAR |
| 2025-11-25 | 4 | Tenable Holdings, Inc. (TENB) | Option exercise (M): 14,544 @ $0 · Tax withholding (F): 5,278 @ $26.06 · Option exercise (M): 14,544 (derivative) @ $0 | EDGAR |
| 2025-08-25 | 4 | Tenable Holdings, Inc. (TENB) | Grant/award (A): 232,712 (derivative) @ $0 | EDGAR |
| 2025-03-26 | 4 | Altair Engineering Inc. (ALTR) | Disposition to issuer (D): 66,125 @ $113 · Disposition to issuer (D): 45,000 (derivative) @ $55.30 · Disposition to issuer (D): 12,000 (derivative) @ $51.21 · Disposition to issuer (D): 8,000 (derivative) @ $50.09 · Disposition to issuer (D): 24,000 (derivative) @ $67.09 · Disposition to issuer (D): 20,625 (derivative) @ $47.81 · +1 more | EDGAR |
| 2025-03-06 | 4 | Altair Engineering Inc. (ALTR) | Gift (G): 2,527 @ $0 | EDGAR |
| 2025-03-05 | 4 | Altair Engineering Inc. (ALTR) | Sale (S): 742 @ $111.45 | EDGAR |
| 2025-02-27 | 4 | Altair Engineering Inc. (ALTR) | Sale (S): 3,811 @ $111.53 | EDGAR |
| 2025-02-14 | 4 | Altair Engineering Inc. (ALTR) | Grant/award (A): 17,613 @ $0 | EDGAR |
| 2025-01-16 | 4 | Altair Engineering Inc. (ALTR) | Grant/award (A): 73 @ $82.42 | EDGAR |
| 2024-12-26 | 4 | Altair Engineering Inc. (ALTR) | Sale (S): 1,048 @ $108.90 | EDGAR |
| 2024-07-16 | 4 | Altair Engineering Inc. (ALTR) | Grant/award (A): 83 @ $71.68 | EDGAR |
| 2024-03-19 | 4 | Altair Engineering Inc. (ALTR) | Grant/award (A): 8,625 @ $0 · Grant/award (A): 21,563 (derivative) @ $0 | EDGAR |
| 2024-03-05 | 4 | Altair Engineering Inc. (ALTR) | Sale (S): 883 @ $85.32 | EDGAR |
| 2024-02-29 | 4 | Altair Engineering Inc. (ALTR) | Sale (S): 4,363 @ $83.65 | EDGAR |
| 2024-01-17 | 4 | Altair Engineering Inc. (ALTR) | Grant/award (A): 94 @ $63.92 | 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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