Flagship Harbor Advisors, LLC

SEC CIK: 0001691766
Latest filing: Jul 22, 2026

SEC filings (opens in a new tab)

BRK.B holding history

Berkshire Hathaway Inc in every 13F filed by Flagship Harbor Advisors, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

BRK.B overview All 13F holders of BRK.B Full Q2 2026 holdings

Shares (Q2 2026): 27,417
Value: $13.7M
% of portfolio: 0.5%
Quarters held: 22; Since Q1 2021

Holdings of BRK.B by Flagship Harbor Advisors, LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	27,417	$13.7M	0.5%	−774−2.7%	Reduced	Holders
Q1 2026	28,191	$13.5M	0.6%	+181+0.6%	Added	Holders
Q4 2025	28,010	$14.1M	0.7%	−109−0.4%	Reduced	Holders
Q3 2025	28,119	$14.1M	0.6%	−1,067−3.7%	Reduced	Holders
Q2 2025	29,186	$14.2M	0.7%	−2,801−8.8%	Reduced	Holders
Q1 2025	31,987	$17.0M	0.9%	+13,287+71.1%	Added	Holders
Q4 2024	18,700	$8.48M	0.4%	+1,327+7.6%	Added	Holders
Q3 2024	17,373	$8.00M	0.4%	−132−0.8%	Reduced	Holders
Q2 2024	17,505	$7.12M	0.4%	+1,840+11.7%	Added	Holders
Q1 2024	15,665	$6.59M	0.4%	−1,188−7.0%	Reduced	Holders
Q4 2023	16,853	$6.01M	0.4%	+3,425+25.5%	Added	Holders
Q3 2023	13,428	$4.70M	0.4%	−9−0.1%	Reduced	Holders
Q2 2023	13,437	$4.58M	0.4%	+265+2.0%	Added	Holders
Q1 2023	13,172	$4.07M	0.4%	−104−0.8%	Reduced	Holders
Q4 2022	13,276	$4.10M	0.4%	−202−1.5%	Reduced	Holders
Q3 2022	13,478	$3.60M	0.4%	−106−0.8%	Reduced	Holders
Q2 2022	13,584	$3.71M	0.4%	+413+3.1%	Added	Holders
Q1 2022	13,171	$4.65M	0.4%	+1,162+9.7%	Added	Holders
Q4 2021	12,009	$3.59M	0.3%	+60+0.5%	Added	Holders
Q3 2021	11,949	$3.32M	0.4%	00.0%	Unchanged	Holders
Q2 2021	11,949	$3.32M	0.4%	−2,551−17.6%	Reduced	Holders
Q1 2021	14,500	$3.70M	0.4%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.