Schafer Douglas M. JR — SEC Form 4 filings
SEC reporting owner CIK 2079445. 12 Form 4 filings on record with FilingPulse; latest filed 2026-09-04.
Transaction summary — filings shown
Covers all 12 filings on record, filed 2025-08-15 to 2026-09-04. 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): 6 legs across 6 filings — 288,000 shares, $12,347,520 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 41.
- Largest priced transaction: sale of 48,000 shares @ $47.25 ($2,268,000) in MIAMI INTERNATIONAL HOLDINGS, INC., filed 2026-05-05.
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 |
|---|---|---|---|---|---|
| MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | EVP and CIO | 12 | — | 6 legs · 288,000 sh · $12,347,520 | 41 |
Form 4 filings — Schafer Douglas M. JR
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-04 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Option exercise (M): 43,334 @ $12 · Option exercise (M): 4,666 @ $12 · Sale (S): 48,000 @ $40.48 · Option exercise (M): 43,334 (derivative) @ $0 · Option exercise (M): 4,666 (derivative) @ $0 | EDGAR |
| 2026-08-06 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Option exercise (M): 48,000 @ $12 · Sale (S): 48,000 @ $45.71 · Option exercise (M): 48,000 (derivative) @ $0 | EDGAR |
| 2026-07-07 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Option exercise (M): 6,000 @ $12 · Option exercise (M): 42,000 @ $12 · Sale (S): 48,000 @ $41.22 · Option exercise (M): 6,000 (derivative) @ $0 · Option exercise (M): 42,000 (derivative) @ $0 | EDGAR |
| 2026-06-18 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Grant/award (A): 23,298 @ $0 · Grant/award (A): 2,485 (derivative) @ $0 · Grant/award (A): 21,481 (derivative) @ $0 | EDGAR |
| 2026-06-12 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Tax withholding (F): 32,565 @ $40.79 | EDGAR |
| 2026-06-04 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Option exercise (M): 48,000 @ $12 · Sale (S): 48,000 @ $42.84 · Option exercise (M): 48,000 (derivative) @ $0 | EDGAR |
| 2026-05-05 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Option exercise (M): 48,000 @ $12 · Sale (S): 48,000 @ $47.25 · Option exercise (M): 48,000 (derivative) @ $0 | EDGAR |
| 2026-03-18 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Option exercise (M): 48,000 @ $12 · Sale (S): 48,000 @ $39.74 · Option exercise (M): 48,000 (derivative) @ $0 | EDGAR |
| 2026-02-20 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Tax withholding (F): 32,565 @ $40.89 | EDGAR |
| 2026-02-12 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Tax withholding (F): 108,550 @ $41.33 | EDGAR |
| 2025-08-19 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Conversion (C): 500 · Conversion (C): 387,296 · Conversion (C): 500 (derivative) @ $0 · Conversion (C): 387,296 (derivative) @ $0 · Option exercise (M): 16,666 (derivative) @ $0 · Option exercise (M): 16,666 (derivative) @ $0 · +12 more | EDGAR |
| 2025-08-15 | 4 | MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) | Tax withholding (F): 21,710 (derivative) @ $23 | 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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