O'Sullivan Michael J. — SEC Form 4 filings
SEC reporting owner CIK 1713777. 41 Form 4 filings on record with FilingPulse; latest filed 2026-08-13.
Transaction summary — filings shown
Covers all 41 filings on record, filed 2024-02-02 to 2026-08-13. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 5 legs across 2 filings — 1,024 shares, $500,617 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 37 legs across 36 filings — 1,037,582 shares, $10,703,177 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 31.
- Largest priced transaction: sale of 58,924 shares @ $15.51 ($913,811) in Snap Inc, filed 2024-06-20.
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 |
|---|---|---|---|---|---|
| Snap Inc (SNAP) | General Counsel | 39 | — | 37 legs · 1,037,582 sh · $10,703,177 | 31 |
| BERKSHIRE HATHAWAY INC (BRK.B) | See Remarks | 2 | 5 legs · 1,024 sh · $500,617 | — | — |
Form 4 filings — O'Sullivan Michael J.
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-13 | 4 | BERKSHIRE HATHAWAY INC (BRK.B) | Purchase (P): 45 @ $510.64 · Purchase (P): 400 @ $512.52 · Purchase (P): 43 @ $513.61 | EDGAR |
| 2026-05-06 | 4 | BERKSHIRE HATHAWAY INC (BRK.B) | Purchase (P): 483 @ $467.13 · Purchase (P): 53 @ $470.22 | EDGAR |
| 2025-11-19 | 4 | Snap Inc (SNAP) | Sale (S): 70,882 @ $8.34 · Other (J): 60,094 @ $0 · Other (J): 60,094 @ $0 | EDGAR |
| 2025-11-04 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $7.73 | EDGAR |
| 2025-10-02 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $7.86 | EDGAR |
| 2025-09-18 | 4 | Snap Inc (SNAP) | Sale (S): 14,290 @ $7.58 · Other (J): 13,200 @ $0 · Other (J): 13,200 @ $0 | EDGAR |
| 2025-08-29 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $7.16 | EDGAR |
| 2025-08-20 | 4 | Snap Inc (SNAP) | Sale (S): 68,705 @ $7.18 · Other (J): 62,270 @ $0 · Other (J): 62,270 @ $0 | EDGAR |
| 2025-08-04 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $9.57 | EDGAR |
| 2025-07-02 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $8.71 | EDGAR |
| 2025-06-18 | 4 | Snap Inc (SNAP) | Sale (S): 14,297 @ $8.04 · Other (J): 13,194 @ $0 · Other (J): 13,194 @ $0 | EDGAR |
| 2025-06-03 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $8.15 | EDGAR |
| 2025-05-19 | 4 | Snap Inc (SNAP) | Sale (S): 68,845 @ $8.59 · Other (J): 62,130 @ $0 · Other (J): 62,130 @ $0 | EDGAR |
| 2025-05-01 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $7.74 | EDGAR |
| 2025-04-02 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $8.60 | EDGAR |
| 2025-03-18 | 4 | Snap Inc (SNAP) | Sale (S): 14,183 @ $8.83 · Other (J): 13,306 @ $0 · Other (J): 13,306 @ $0 | EDGAR |
| 2025-03-04 | 4 | Snap Inc (SNAP) | Sale (S): 24,000 @ $10.16 | EDGAR |
| 2025-02-20 | 4 | Snap Inc (SNAP) | Sale (S): 69,119 @ $10.84 · Other (J): 61,856 @ $0 · Other (J): 61,856 @ $0 | EDGAR |
| 2025-02-05 | 4 | Snap Inc (SNAP) | Grant/award (A): 1,326,093 @ $0 | EDGAR |
| 2025-02-03 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $11.49 | EDGAR |
| 2025-01-02 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $10.84 | EDGAR |
| 2024-12-18 | 4 | Snap Inc (SNAP) | Sale (S): 56,961 @ $11.44 · Other (J): 52,489 @ $0 · Other (J): 52,489 @ $0 | EDGAR |
| 2024-12-03 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $11.89 | EDGAR |
| 2024-11-20 | 4 | Snap Inc (SNAP) | Sale (S): 12,315 @ $10.54 · Other (J): 10,951 @ $0 · Other (J): 10,951 @ $0 | EDGAR |
| 2024-11-04 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $12.31 | EDGAR |
| 2024-10-02 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $10.81 | EDGAR |
| 2024-09-18 | 4 | Snap Inc (SNAP) | Sale (S): 59,053 @ $9.29 · Other (J): 50,396 @ $0 · Other (J): 50,396 @ $0 | EDGAR |
| 2024-09-04 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $9.30 | EDGAR |
| 2024-08-20 | 4 | Snap Inc (SNAP) | Sale (S): 12,512 @ $9.11 · Other (J): 10,754 @ $0 · Other (J): 10,754 @ $0 | EDGAR |
| 2024-08-02 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $13.28 | EDGAR |
| 2024-07-02 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $16.56 | EDGAR |
| 2024-06-20 | 4 | Snap Inc (SNAP) | Sale (S): 58,924 @ $15.51 · Other (J): 50,525 @ $0 · Other (J): 50,525 @ $0 | EDGAR |
| 2024-06-04 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $15.01 | EDGAR |
| 2024-05-20 | 4 | Snap Inc (SNAP) | Sale (S): 12,695 @ $15.91 · Other (J): 10,571 @ $0 · Other (J): 10,571 @ $0 | EDGAR |
| 2024-05-10 | 4 | Snap Inc (SNAP) | Grant/award (A): 255,926 @ $0 | EDGAR |
| 2024-05-02 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $15.10 | EDGAR |
| 2024-04-01 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $11.53 | EDGAR |
| 2024-03-20 | 4 | Snap Inc (SNAP) | Sale (S): 59,641 @ $11.00 · Other (J): 49,807 @ $0 · Other (J): 49,807 @ $0 | EDGAR |
| 2024-03-04 | 4 | Snap Inc (SNAP) | Sale (S): 18,000 @ $11.06 · Sale (S): 160 @ $11.06 | EDGAR |
| 2024-02-07 | 4 | Snap Inc (SNAP) | Grant/award (A): 341,234 @ $0 | EDGAR |
| 2024-02-02 | 4 | Snap Inc (SNAP) | Sale (S): 13,000 @ $16.16 | 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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