How many insider purchases were disclosed in May 2026?

886 open-market insider purchases of $50K or more were disclosed across 396 companies by 572 distinct insiders in SEC Form 4 filings during May 2026, totaling $3.0B.

What was the biggest insider buy in May 2026?

The largest open-market insider purchase disclosed in May 2026 was $999.9M by VOLKSWAGEN AG at Rivian Automotive, Inc. / DE (RIVN), filed with the SEC on Form 4.

Biggest Insider Buys: May 2026

The largest open-market insider purchases disclosed in SEC Form 4 filings, ranked by dollar value.

In May 2026, 886 open-market insider purchases of $50K or more were disclosed across 396 companies in SEC Form 4 filings, totaling $3.0B. The largest single purchase was $999.9M by VOLKSWAGEN AG at Rivian Automotive, Inc. / DE (RIVN).

← All monthly rankings

Largest purchases · May 2026

							Source
RIVN	VOLKSWAGEN AG	10% Owner	Purchase	62,889,522	$999.9M	May 4	SEC ↗
PSUS	ACKMAN WILLIAM A	Chief Executive Officer	Purchase	4,897,171	$240.9M	May 1	SEC ↗
BXDC	Blackstone Treasury Holdings III L.L.C.	10% Owner	Purchase	9,486,795	$189.7M	May 19	SEC ↗
LILA	MALONE JOHN C	Director Emeritus	Purchase	12,406,463	$107.1M	May 27	SEC ↗
ARTV	RA CAPITAL MANAGEMENT, L.P.	Director, 10% Owner	Purchase	6,510,416	$75.0M	May 13	SEC ↗
RSG	CASCADE INVESTMENT, L.L.C.	10% Owner	Purchase	366,000	$74.0M	May 14	SEC ↗
BRCB	Cynosure Group, LLC	Director, 10% Owner	Purchase	13,642,712	$73.0M	May 19	SEC ↗
RSG	CASCADE INVESTMENT, L.L.C.	10% Owner	Purchase	307,505	$63.9M	May 19	SEC ↗
RIAEX	RBC Global Asset Management (U.S.) Inc.	Adviser	Purchase	1,976,000	$49.4M	May 29	SEC ↗
COAG	RA CAPITAL MANAGEMENT, L.P.	Director, 10% Owner	Purchase	2,675,000	$48.1M	May 6	SEC ↗
AXIA3	Batista de Lima Filho Pedro	Director	Purchase	3,656,500	$43.5M	May 12	SEC ↗
RSG	CASCADE INVESTMENT, L.L.C.	10% Owner	Purchase	119,795	$25.0M	May 19	SEC ↗
ODTX	TPG GP A, LLC	Former 10% Owner	Purchase	1,388,889	$25.0M	May 13	SEC ↗
PSUS	ISRAEL RYAN	Chief Investment Officer	Purchase	500,000	$25.0M	May 1	SEC ↗
LNBIX	Lincoln Financial Investments Corp	Investment Adviser	Purchase	2,448,579.82	$25.0M	May 18	SEC ↗
CLOO	VAN ECK ASSOCIATES CORP	10% Owner	Purchase	996,000	$24.9M	May 4	SEC ↗
GOLD	Tether Global Investments Fund, S.I.C.A.F., S.A.	10% Owner	Purchase	530,338	$23.6M	May 7	SEC ↗
WGS	Meister Keith A.	Director, 10% Owner	Purchase	533,758	$20.2M	May 12	SEC ↗
ODTX	Dimension Capital II, L.P.	Director	Purchase	1,111,111	$20.0M	May 12	SEC ↗
VRDN	Fairmount Funds Management LLC	Director, 10% Owner	Purchase	1,176,470	$20.0M	May 13	SEC ↗
SPTX	ARCH Venture Partners XII, LLC	10% Owner	Purchase	1,100,000	$19.8M	May 4	SEC ↗
WGS	Meister Keith A.	Director, 10% Owner	Purchase	500,000	$19.6M	May 12	SEC ↗
PS	ACKMAN WILLIAM A	CEO & Chairman	Purchase	800,000	$19.0M	May 5	SEC ↗
PSUS	Hakim Ben	President	Purchase	350,000	$17.5M	May 1	SEC ↗
ARTV	GC Corp.	10% Owner	Purchase	1,432,291	$16.5M	May 28	SEC ↗