O'Sullivan Michael J.

Track

Insider profile

Performance

Overall performance
3.0
Performance over holding periods
3.0
30 days 90 days 120 days
Average return -2% 8.2% 15.1%
Success rate 52% 68% 82%
Transactions
42 5% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance
O'Sullivan Michael J.'s trades of Berkshire Hathaway Inc's stock


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-06 2026-05-06
B Purchase
74,525 +0.9%
80.35
US$4,934,795 		74,525 +0.9% 80.35 US$4,934,795
2026-05-06 2026-05-06
B Purchase
87,904 -28.9%
251.53
US$2,599,188 		87,904 -28.9% 251.53 US$2,599,188
2026-01-30 2026-01-30
US Snap Inc (SNAP)
PrS Proposed sale
39,799
21.15
US$1,214,627 		39,799 21.15 US$1,214,627
2025-12-16 2025-12-16
US Snap Inc (SNAP)
PrS Proposed sale
14,572
7.21
US$105,105 		14,572 7.21 US$105,105
2025-11-28 2025-11-28
US Snap Inc (SNAP)
PrS Proposed sale
24,000
7.61
US$182,640 		24,000 7.61 US$182,640
2025-11-19 2025-11-17
US Snap Inc (SNAP)
S Sale
70,882 -3.7%
8.34
US$591,021 		70,882 -3.7% 8.34 US$591,021
2025-11-17 2025-11-17
US Snap Inc (SNAP)
PrS Proposed sale
70,882
8.34
US$591,019 		70,882 8.34 US$591,019
2025-11-04 2025-10-31
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.7%
7.73
US$185,623 		24,000 -4.7% 7.73 US$185,623
2025-10-31 2025-10-31
US Snap Inc (SNAP)
PrS Proposed sale
24,000
7.80
US$187,200 		24,000 7.80 US$187,200
2025-10-02 2025-09-30
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.5%
7.86
US$188,544 		24,000 -4.5% 7.86 US$188,544
2025-09-18 2025-09-16
US Snap Inc (SNAP)
S Sale
14,290 -0.7%
7.58
US$108,281 		14,290 -0.7% 7.58 US$108,281
2025-09-16 2025-09-16
US Snap Inc (SNAP)
PrS Proposed sale
14,290
7.56
US$107,996 		14,290 7.56 US$107,996
2025-08-29 2025-08-29
US Snap Inc (SNAP)
PrS Proposed sale
24,000
7.14
US$171,360 		24,000 7.14 US$171,360
2025-08-29 2025-08-29
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.4%
7.16
US$171,857 		24,000 -4.4% 7.16 US$171,857
2025-08-20 2025-08-18
US Snap Inc (SNAP)
S Sale
68,705 -3.3%
7.18
US$493,082 		68,705 -3.3% 7.18 US$493,082
2025-08-18 2025-08-18
US Snap Inc (SNAP)
PrS Proposed sale
68,705
7.18
US$493,084 		68,705 7.18 US$493,084
2025-08-04 2025-07-31
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.7%
9.57
US$229,591 		24,000 -4.7% 9.57 US$229,591
2025-07-31 2025-07-31
US Snap Inc (SNAP)
PrS Proposed sale
24,000
9.43
US$226,320 		24,000 9.43 US$226,320
2025-07-02 2025-06-30
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.5%
8.71
US$208,978 		24,000 -4.5% 8.71 US$208,978
2025-06-18 2025-06-16
US Snap Inc (SNAP)
S Sale
14,297 -0.7%
8.04
US$114,951 		14,297 -0.7% 8.04 US$114,951
2025-06-16 2025-06-16
US Snap Inc (SNAP)
PrS Proposed sale
14,297
8.04
US$114,950 		14,297 8.04 US$114,950
2025-06-03 2025-05-30
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.4%
8.15
US$195,540 		24,000 -4.4% 8.15 US$195,540
2025-05-30 2025-05-30
US Snap Inc (SNAP)
PrS Proposed sale
24,000
8.25
US$198,000 		24,000 8.25 US$198,000
2025-05-19 2025-05-16
US Snap Inc (SNAP)
S Sale
68,845 -3.1%
8.59
US$591,695 		68,845 -3.1% 8.59 US$591,695
2025-05-16 2025-05-16
US Snap Inc (SNAP)
PrS Proposed sale
68,845
8.59
US$591,697 		68,845 8.59 US$591,697
2025-05-01 2025-04-30
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.7%
7.74
US$185,875 		24,000 -4.7% 7.74 US$185,875
2025-04-30 2025-04-30
US Snap Inc (SNAP)
PrS Proposed sale
24,000
9.09
US$218,160 		24,000 9.09 US$218,160
2025-04-02 2025-03-31
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.5%
8.60
US$206,386 		24,000 -4.5% 8.60 US$206,386
2025-03-18 2025-03-17
US Snap Inc (SNAP)
S Sale
14,183 -0.6%
8.83
US$125,216 		14,183 -0.6% 8.83 US$125,216
2025-03-17 2025-03-17
US Snap Inc (SNAP)
PrS Proposed sale
14,183
8.83
US$125,216 		14,183 8.83 US$125,216
2025-03-04 2025-02-28
US Snap Inc (SNAP)
PlS Planned sale
24,000 -4.4%
10.16
US$243,828 		24,000 -4.4% 10.16 US$243,828
2025-02-28 2025-02-28
US Snap Inc (SNAP)
PrS Proposed sale
24,000
10.25
US$246,000 		24,000 10.25 US$246,000
2025-02-20 2025-02-18
US Snap Inc (SNAP)
S Sale
69,119 -2.9%
10.84
US$749,450 		69,119 -2.9% 10.84 US$749,450
2025-02-18 2025-02-18
US Snap Inc (SNAP)
PrS Proposed sale
69,119
10.84
US$749,449 		69,119 10.84 US$749,449
2025-02-03 2025-01-31
US Snap Inc (SNAP)
PlS Planned sale
18,000 -3.6%
11.49
US$206,903 		18,000 -3.6% 11.49 US$206,903
2025-01-31 2025-01-31
US Snap Inc (SNAP)
PrS Proposed sale
18,000
11.29
US$203,220 		18,000 11.29 US$203,220
2025-01-02 2024-12-31
US Snap Inc (SNAP)
PlS Planned sale
18,000 -3.5%
10.84
US$195,104 		18,000 -3.5% 10.84 US$195,104
2024-12-18 2024-12-16
US Snap Inc (SNAP)
S Sale
56,961 -4.8%
11.44
US$651,816 		56,961 -4.8% 11.44 US$651,816
2024-12-16 2024-12-16
US Snap Inc (SNAP)
PrS Proposed sale
56,961
11.44
US$651,816 		56,961 11.44 US$651,816
2024-12-03 2024-11-29
US Snap Inc (SNAP)
PlS Planned sale
18,000 -3.7%
11.89
US$213,932 		18,000 -3.7% 11.89 US$213,932
2024-11-29 2024-11-29
US Snap Inc (SNAP)
PrS Proposed sale
18,000
11.61
US$208,980 		18,000 11.61 US$208,980
2024-11-20 2024-11-18
US Snap Inc (SNAP)
S Sale
12,315 -1.0%
10.54
US$129,857 		12,315 -1.0% 10.54 US$129,857
2024-11-18 2024-11-18
US Snap Inc (SNAP)
PrS Proposed sale
12,315
10.54
US$129,857 		12,315 10.54 US$129,857
2024-11-04 2024-10-31
US Snap Inc (SNAP)
PlS Planned sale
18,000 -3.7%
12.32
US$221,670 		18,000 -3.7% 12.32 US$221,670
2024-10-31 2024-10-31
US Snap Inc (SNAP)
PrS Proposed sale
18,000
12.16
US$218,880 		18,000 12.16 US$218,880