Yoram Rubananko

Insider

First SEC filing: Oct. 5, 2021 · Latest: Oct. 5, 2021

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Initial holdings The stakes this person held when they first started reporting.

Insider at

COST selling July 14, 2025

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 18 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

18 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Sept. 10, 2025	COST	F	1,746	$956.29	$1,669,682	8,247 Direct	-17.47%	Disposed	-1.4% (price as of 2026-08-21)
Sept. 10, 2025	COST	A	4,219	—	—	9,993 Direct	+73.07%	Acquired	(price as of 2026-08-21)
July 14, 2025	COST	S	4,000	$974.96	$3,899,840	5,774 Direct	-40.92%	Disposed	-3.3% (price as of 2026-08-21)
Sept. 16, 2024	COST	F	2,873	$907.87	$2,608,311	9,774 Direct	-22.72%	Disposed	3.9% (price as of 2026-08-21)
Sept. 16, 2024	COST	A	6,737	—	—	12,647 Direct	+113.99%	Acquired	(price as of 2026-08-21)
Jan. 18, 2024	COST	S	2,500	$680.32	$1,700,800	5,910 Direct	-29.73%	Disposed	38.6% (price as of 2026-08-21)
Sept. 15, 2023	COST	F	3,081	$556.36	$1,714,145	8,410 Direct	-26.81%	Disposed	69.5% (price as of 2026-08-21)
Sept. 15, 2023	COST	A	7,429	—	—	11,491 Direct	+182.89%	Acquired	(price as of 2026-08-21)
Oct. 22, 2022	COST	F	1,076	$478.18	$514,522	4,062 Direct	-20.94%	Disposed	97.3% (price as of 2026-08-21)
Oct. 22, 2022	COST	F	552	$478.18	$263,955	5,138 Direct	-9.70%	Disposed	97.3% (price as of 2026-08-21)
Oct. 22, 2022	COST	F	426	$478.18	$203,705	5,690 Direct	-6.97%	Disposed	97.3% (price as of 2026-08-21)
Oct. 22, 2022	COST	F	281	$478.18	$134,369	6,116 Direct	-4.39%	Disposed	97.3% (price as of 2026-08-21)
Oct. 22, 2022	COST	F	195	$478.18	$93,245	6,397 Direct	-2.96%	Disposed	97.3% (price as of 2026-08-21)
Dec. 13, 2021	COST	S	4,000	$550.72	$2,202,880	6,592 Direct	-37.76%	Disposed	71.3% (price as of 2026-08-21)
Oct. 22, 2021	COST	F	2,152	$481.99	$1,037,242	3,438 Direct	-38.50%	Disposed	95.7% (price as of 2026-08-21)
Oct. 22, 2021	COST	F	139	$481.99	$66,997	5,590 Direct	-2.43%	Disposed	95.7% (price as of 2026-08-21)
Oct. 22, 2021	COST	F	129	$481.99	$62,177	5,729 Direct	-2.20%	Disposed	95.7% (price as of 2026-08-21)
Oct. 22, 2021	COST	F	141	$481.99	$67,961	5,858 Direct	-2.35%	Disposed	95.7% (price as of 2026-08-21)
Oct. 22, 2021	COST	F	195	$481.99	$93,988	5,999 Direct	-3.15%	Disposed	95.7% (price as of 2026-08-21)
Oct. 22, 2021	COST	F	210	$481.99	$101,218	6,194 Direct	-3.28%	Disposed	95.7% (price as of 2026-08-21)
Oct. 22, 2021	COST	A	7,154	—	—	10,592 Direct	+208.09%	Acquired	(price as of 2026-08-21)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Oct. 5, 2021	COST	Common Stock	—	Direct