O'Sullivan Michael J.
SEC CIK 1713777 · EDGAR
BoughtSold
Most active insiders at BRK-B, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | O'Sullivan Michael J. | See Remarks | $500.6K | — |
| 2 | Jain Ajit | Vice COB, Dir | — | — |
| 3 | GUYMAN CHARLOTTE | Dir | — | — |
| 4 | BUFFETT WARREN E | Dir, 10% | — | — |
Transactions 130
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MI | 2026-08-13 17:06 | 2026-08-12 | BRK-B | Berkshire Hathaway | O'Sullivan Michael J. | See Remarks | P - Purchase | $512.44 | +488 | 1,151 | +74% | +$250.1K |
| MI | 2026-05-06 19:04 | 2026-05-06 | BRK-B | Berkshire Hathaway | O'Sullivan Michael J. | See Remarks | P - Purchase | $467.44 | +536 | 663 | +422% | +$250.5K |
| I | 2025-11-19 | 2025-11-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +60.1K | 550.5K | +12% | $0 |
| 2025-11-19 | 2025-11-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -60.1K | 1.79M | -3% | $0 | |
| 2025-11-19 | 2025-11-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.34 | -70.9K | 1.85M | -4% | -$591.2K | |
| TI | 2025-11-04 | 2025-10-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $7.73 | -24.0K | 490.5K | -5% | -$185.5K |
| TI | 2025-10-02 | 2025-09-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $7.86 | -24.0K | 514.5K | -4% | -$188.6K |
| I | 2025-09-18 | 2025-09-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +13.2K | 538.5K | +3% | $0 |
| 2025-09-18 | 2025-09-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -13.2K | 1.93M | -0.7% | $0 | |
| 2025-09-18 | 2025-09-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $7.58 | -14.3K | 1.94M | -0.7% | -$108.3K | |
| TI | 2025-08-29 | 2025-08-29 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $7.16 | -24.0K | 525.3K | -4% | -$171.8K |
| 2025-08-20 | 2025-08-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -62.3K | 1.95M | -3% | $0 | |
| 2025-08-20 | 2025-08-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $7.18 | -68.7K | 2.02M | -3% | -$493.3K | |
| I | 2025-08-20 | 2025-08-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +62.3K | 549.3K | +13% | $0 |
| TI | 2025-08-04 | 2025-07-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $9.57 | -24.0K | 487.0K | -5% | -$229.7K |
| TI | 2025-07-02 | 2025-06-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.71 | -24.0K | 511.0K | -4% | -$209.0K |
| 2025-06-18 | 2025-06-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -13.2K | 2.08M | -0.6% | $0 | |
| 2025-06-18 | 2025-06-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.04 | -14.3K | 2.10M | -0.7% | -$114.9K | |
| I | 2025-06-18 | 2025-06-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +13.2K | 535.0K | +3% | $0 |
| TI | 2025-06-03 | 2025-05-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.15 | -24.0K | 521.8K | -4% | -$195.6K |
| I | 2025-05-19 | 2025-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +62.1K | 545.8K | +13% | $0 |
| 2025-05-19 | 2025-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.59 | -68.8K | 2.17M | -3% | -$591.4K | |
| 2025-05-19 | 2025-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -62.1K | 2.11M | -3% | $0 | |
| TI | 2025-05-01 | 2025-04-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $7.74 | -24.0K | 483.7K | -5% | -$185.8K |
| TI | 2025-04-02 | 2025-03-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.60 | -24.0K | 507.7K | -5% | -$206.4K |
| 2025-03-18 | 2025-03-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -13.3K | 2.24M | -0.6% | $0 | |
| I | 2025-03-18 | 2025-03-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +13.3K | 531.7K | +3% | $0 |
| 2025-03-18 | 2025-03-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.83 | -14.2K | 2.26M | -0.6% | -$125.2K | |
| TI | 2025-03-04 | 2025-02-28 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $10.16 | -24.0K | 518.4K | -4% | -$243.8K |
| 2025-02-20 | 2025-02-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -61.9K | 2.27M | -3% | $0 | |
| I | 2025-02-20 | 2025-02-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +61.9K | 542.4K | +13% | $0 |
| 2025-02-20 | 2025-02-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $10.84 | -69.1K | 2.33M | -3% | -$749.2K | |
| 2025-02-05 | 2025-02-03 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | A - Grant | $0.00 | +1.33M | 2.40M | +123% | $0 | |
| TI | 2025-02-03 | 2025-01-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.49 | -18.0K | 480.5K | -4% | -$206.8K |
| TI | 2025-01-02 | 2024-12-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $10.84 | -18.0K | 498.5K | -3% | -$195.1K |
| 2024-12-18 | 2024-12-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -52.5K | 1.08M | -5% | $0 | |
| I | 2024-12-18 | 2024-12-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +52.5K | 516.5K | +11% | $0 |
| 2024-12-18 | 2024-12-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.44 | -57.0K | 1.13M | -5% | -$651.6K | |
| TI | 2024-12-03 | 2024-11-29 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.89 | -18.0K | 464.0K | -4% | -$214.0K |
| 2024-11-20 | 2024-11-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $10.54 | -12.3K | 1.20M | -1% | -$129.8K | |
| I | 2024-11-20 | 2024-11-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +11.0K | 482.0K | +2% | $0 |
| 2024-11-20 | 2024-11-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -11.0K | 1.18M | -0.9% | $0 | |
| TI | 2024-11-04 | 2024-10-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $12.32 | -18.0K | 471.1K | -4% | -$221.8K |
| TI | 2024-10-02 | 2024-09-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $10.81 | -18.0K | 489.1K | -4% | -$194.6K |
| 2024-09-18 | 2024-09-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $9.29 | -59.1K | 1.26M | -4% | -$548.6K | |
| I | 2024-09-18 | 2024-09-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +50.4K | 507.1K | +11% | $0 |
| 2024-09-18 | 2024-09-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -50.4K | 1.21M | -4% | $0 | |
| TI | 2024-09-04 | 2024-08-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $9.30 | -18.0K | 456.7K | -4% | -$167.4K |
| 2024-08-20 | 2024-08-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -10.8K | 1.32M | -0.8% | $0 | |
| 2024-08-20 | 2024-08-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $9.11 | -12.5K | 1.33M | -0.9% | -$114.0K | |
| I | 2024-08-20 | 2024-08-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +10.8K | 474.7K | +2% | $0 |
| TI | 2024-08-02 | 2024-07-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $13.28 | -18.0K | 463.9K | -4% | -$239.0K |
| TI | 2024-07-02 | 2024-06-28 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $16.56 | -18.0K | 481.9K | -4% | -$298.1K |
| I | 2024-06-20 | 2024-06-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +50.5K | 499.9K | +11% | $0 |
| 2024-06-20 | 2024-06-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -50.5K | 1.34M | -4% | $0 | |
| 2024-06-20 | 2024-06-17 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $15.51 | -58.9K | 1.39M | -4% | -$913.9K | |
| TI | 2024-06-04 | 2024-05-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $15.01 | -18.0K | 449.4K | -4% | -$270.2K |
| 2024-05-20 | 2024-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -10.6K | 1.45M | -0.7% | $0 | |
| 2024-05-20 | 2024-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $15.91 | -12.7K | 1.46M | -0.9% | -$202.0K | |
| I | 2024-05-20 | 2024-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +10.6K | 467.4K | +2% | $0 |
| 2024-05-10 | 2024-05-08 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | A - Grant | $0.00 | +255.9K | 1.47M | +21% | $0 | |
| TI | 2024-05-02 | 2024-04-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $15.10 | -18.0K | 456.8K | -4% | -$271.8K |
| TI | 2024-04-01 | 2024-03-28 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.53 | -18.0K | 474.8K | -4% | -$207.5K |
| 2024-03-20 | 2024-03-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.00 | -59.6K | 1.27M | -4% | -$656.1K | |
| I | 2024-03-20 | 2024-03-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +49.8K | 492.8K | +11% | $0 |
| 2024-03-20 | 2024-03-18 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -49.8K | 1.22M | -4% | $0 | |
| TI | 2024-03-04 | 2024-02-29 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.06 | -18.0K | 443.0K | -4% | -$199.1K |
| T | 2024-03-04 | 2024-02-29 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.06 | -160 | 1.33M | -0.0% | -$1,770 |
| 2024-02-07 | 2024-02-05 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | A - Grant | $0.00 | +341.2K | 1.33M | +35% | $0 | |
| TI | 2024-02-02 | 2024-01-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $16.16 | -13.0K | 461.0K | -3% | -$210.1K |
| I | 2023-12-19 | 2023-12-15 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $16.88 | -13.0K | 474.0K | -3% | -$219.4K |
| I | 2023-12-01 | 2023-11-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $13.83 | -13.0K | 487.0K | -3% | -$179.8K |
| 2023-11-20 | 2023-11-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.90 | -35.7K | 1.02M | -3% | -$424.6K | |
| 2023-11-20 | 2023-11-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -30.4K | 985.8K | -3% | $0 | |
| I | 2023-11-20 | 2023-11-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +30.4K | 500.0K | +6% | $0 |
| I | 2023-11-02 | 2023-10-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $9.93 | -13.0K | 469.6K | -3% | -$129.1K |
| I | 2023-10-03 | 2023-09-29 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.75 | -13.0K | 482.6K | -3% | -$113.8K |
| I | 2023-09-01 | 2023-08-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $10.33 | -13.0K | 495.6K | -3% | -$134.3K |
| 2023-08-18 | 2023-08-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $9.23 | -36.0K | 1.08M | -3% | -$332.6K | |
| 2023-08-18 | 2023-08-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -30.1K | 1.05M | -3% | $0 | |
| I | 2023-08-18 | 2023-08-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +30.1K | 508.6K | +6% | $0 |
| I | 2023-08-02 | 2023-07-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.22 | -13.0K | 478.5K | -3% | -$145.9K |
| I | 2023-07-05 | 2023-06-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.87 | -13.0K | 491.5K | -3% | -$154.3K |
| I | 2023-06-02 | 2023-05-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $9.99 | -13.0K | 504.5K | -3% | -$129.9K |
| I | 2023-05-18 | 2023-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +52.2K | 517.5K | +11% | $0 |
| 2023-05-18 | 2023-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.51 | -60.8K | 1.17M | -5% | -$517.3K | |
| 2023-05-18 | 2023-05-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -52.2K | 1.12M | -4% | $0 | |
| I | 2023-05-02 | 2023-04-28 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.55 | -13.0K | 465.3K | -3% | -$111.2K |
| I | 2023-04-04 | 2023-03-31 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.13 | -13.0K | 478.3K | -3% | -$144.7K |
| I | 2023-03-02 | 2023-02-28 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $10.15 | -13.0K | 491.3K | -3% | -$131.9K |
| 2023-02-21 | 2023-02-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -52.0K | 1.23M | -4% | $0 | |
| I | 2023-02-21 | 2023-02-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +52.0K | 504.3K | +11% | $0 |
| 2023-02-21 | 2023-02-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.06 | -61.0K | 1.28M | -5% | -$674.7K | |
| 2023-02-01 | 2023-01-30 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | A - Grant | $0.00 | +765.7K | 1.34M | +132% | $0 | |
| 2022-12-20 | 2022-12-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $8.47 | -5,155 | 582.6K | -0.9% | -$43.7K | |
| 2022-12-20 | 2022-12-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | -4,314 | 578.2K | -0.7% | $0 | |
| I | 2022-12-20 | 2022-12-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +4,314 | 452.4K | +1.0% | $0 |
| 2022-11-30 | 2022-11-28 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | A - Grant | $0.00 | +9,469 | 587.7K | +2% | $0 | |
| I | 2022-11-18 | 2022-11-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | J - Other | $0.00 | +35.5K | 448.0K | +9% | $0 |
| 2022-11-18 | 2022-11-16 | SNAP | Snap Inc | O'Sullivan Michael J. | GC | S - Sale | $11.16 | -44.4K | 613.8K | -7% | -$495.5K |
Purchase Sale Sale after option exercise All abbreviations