Michael J. O'Sullivan

SNAP

Michael J. O'Sullivan serves as officer: See Remarks at Snap Inc. (SNAP). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

3 trades

$750.7K

Total Sells

74 trades

$36.96M

Net Position

Net Seller

$36.21M

Companies Traded

BRK-B, BRK-A, BRK.B, SNAP

Active Period

Apr 2021 – Aug 2026

77 total trades

Most Recent

Buy BRK-B

Aug 13, 2026 · $250.1K

Michael J. O'Sullivan's Insider Trading at Snap Inc. (SNAP)

Buys

0 · $0.00

Sells

47 · $13.18M

Total Shares Bought

Total Shares Sold

1,274,095

SNAP Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Nov 19, 2025	Sell	70,882	$8.34	$591.0K	1,854,982
Nov 4, 2025	Sell	24,000	$7.73	$185.6K	490,454
Oct 2, 2025	Sell	24,000	$7.86	$188.5K	514,454
Sep 18, 2025	Sell	14,290	$7.58	$108.3K	1,939,064
Aug 29, 2025	Sell	24,000	$7.16	$171.9K	525,254
Aug 20, 2025	Sell	68,705	$7.18	$493.1K	2,015,624
Aug 4, 2025	Sell	24,000	$9.57	$229.6K	486,984
Jul 2, 2025	Sell	24,000	$8.71	$209.0K	510,984
Jun 18, 2025	Sell	14,297	$8.04	$115.0K	2,097,523
Jun 3, 2025	Sell	24,000	$8.15	$195.5K	521,790
May 19, 2025	Sell	68,845	$8.59	$591.7K	2,173,950
May 1, 2025	Sell	24,000	$7.74	$185.9K	483,660
Apr 2, 2025	Sell	24,000	$8.60	$206.4K	507,660
Mar 18, 2025	Sell	14,183	$8.83	$125.2K	2,256,101
Mar 4, 2025	Sell	24,000	$10.16	$243.8K	518,354
Feb 20, 2025	Sell	69,119	$10.84	$749.5K	2,332,140
Feb 3, 2025	Sell	18,000	$11.49	$206.9K	480,498
Jan 2, 2025	Sell	18,000	$10.84	$195.1K	498,498
Dec 18, 2024	Sell	56,961	$11.44	$651.8K	1,127,655
Dec 3, 2024	Sell	18,000	$11.89	$213.9K	464,009
Nov 20, 2024	Sell	12,315	$10.54	$129.9K	1,195,567
Nov 4, 2024	Sell	18,000	$12.32	$221.7K	471,058
Oct 2, 2024	Sell	18,000	$10.81	$194.6K	489,058
Sep 18, 2024	Sell	59,053	$9.29	$548.6K	1,258,278
Sep 4, 2024	Sell	18,000	$9.30	$167.5K	456,662
Aug 20, 2024	Sell	12,512	$9.11	$113.9K	1,328,085
Aug 2, 2024	Sell	18,000	$13.28	$239.1K	463,908
Jul 2, 2024	Sell	18,000	$16.56	$298.1K	481,908
Jun 20, 2024	Sell	58,924	$15.51	$913.8K	1,391,122
Jun 4, 2024	Sell	18,000	$15.01	$270.2K	449,383
May 20, 2024	Sell	12,695	$15.91	$202.0K	1,460,617
May 2, 2024	Sell	18,000	$15.10	$271.8K	456,812
Apr 1, 2024	Sell	18,000	$11.53	$207.6K	474,812
Mar 20, 2024	Sell	59,641	$11.00	$655.9K	1,267,193
Mar 4, 2024	Sell	18,160	$11.06	$200.8K	1,326,834
Feb 2, 2024	Sell	13,000	$16.16	$210.0K	461,005
Dec 19, 2023	Sell	13,000	$16.88	$219.4K	474,005
Dec 1, 2023	Sell	13,000	$13.83	$179.8K	487,005
Nov 20, 2023	Sell	35,683	$11.90	$424.6K	1,016,181
Nov 2, 2023	Sell	13,000	$9.93	$129.1K	469,584
Oct 3, 2023	Sell	13,000	$8.75	$113.8K	482,584
Sep 1, 2023	Sell	13,000	$10.33	$134.3K	495,584
Aug 18, 2023	Sell	36,037	$9.23	$332.7K	1,081,931
Aug 2, 2023	Sell	13,000	$11.22	$145.9K	478,517
Jul 5, 2023	Sell	13,000	$11.87	$154.3K	491,517
Jun 2, 2023	Sell	13,000	$9.99	$129.9K	504,517
May 18, 2023	Sell	60,793	$8.51	$517.5K	1,170,155

Michael J. O'Sullivan's Insider Trading at Berkshire Hathaway Inc. (BRK.B)

Buys

1 · $250.5K

Sells

0 · $0.00

Total Shares Bought

536

Total Shares Sold

BRK.B Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
May 6, 2026	Buy	536	$467.44	$250.5K	663

Michael J. O'Sullivan's Insider Trading at BRK-B (BRK-B)

Buys

1 · $250.1K

Sells

0 · $0.00

Total Shares Bought

488

Total Shares Sold

BRK-B Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Aug 13, 2026	Buy	488	$512.44	$250.1K	1,151

Michael J. O'Sullivan's Insider Trading at BRK-A Corporation (BRK-A)

Buys

1 · $250.1K

Sells

0 · $0.00

Total Shares Bought

488

Total Shares Sold

BRK-A Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Aug 13, 2026	Buy	488	$512.44	$250.1K	1,151

Showing 1–50 of 77

Explore More Insider Trading Data

SNAP Insider Trading Activity

View all insider trades at Snap Inc.

Communication Services Sector Insider Trades

See insider activity across communication services stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity