Blavatnik Len

CIK 0001326628

Director10% Owner

Filings

Latest May 15, 2026

Issuers covered

Showing

26 of 26

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Track record

32 of 53 open-market trades scored (60% price coverage) - 21 issuers without price data. Returns are signed: a +10% move on a sale shows as -10% (insider was wrong).

Horizon	Trades	Win rate	Avg	Median	Best	Worst
30 days	32	22%	-1.3%	-1.9%	+25.2%	-16.1%
90 days	26	58%	+3.0%	+7.4%	+44.3%	-50.3%
180 days	25	84%	+9.7%	+4.7%	+53.4%	-67.0%
365 days	22	86%	+18.5%	+5.0%	+57.6%	-12.6%

Issuers

Companies where Blavatnik Len has filed

Ticker	Issuer	Filings	Last filed
DAWN	Day One Biopharmaceuticals, Inc.	6	Apr 27, 2026
LYB	Lyondellbasell Industries N.V.	6	Mar 11, 2026
WMG	Warner Music Group Corp.	5	Apr 20, 2026
IRON	Disc Medicine, Inc.	4	Oct 24, 2025
DOCN	Digitalocean Holdings, Inc.	3	May 15, 2026
UPB	Upstream Bio, Inc.	1	Oct 17, 2024
ZURA	Zura Bio Ltd	1	Mar 2, 2026

All filings

26 Form 4 / 4-A filings, newest first

Filed	Issuer	Top transaction	Shares	Price	Value
May 15, 2026	DOCNDigitalocean Holdings, Inc.	SSale	3,278,988	$150.30	$492,831,896
May 11, 2026	DOCNDigitalocean Holdings, Inc.	SSale	43,444	$162.506	$7,059,911
Apr 27, 2026	DAWNDay One Biopharmaceuticals, Inc.	UTender	12,929,322	$21.50	$277,980,423
Apr 20, 2026	WMGWarner Music Group Corp.	Holdings only	-	-	-
Mar 11, 2026	LYBLyondellbasell Industries N.V.	SSale	189,277	$68.1317	$12,895,764
Mar 2, 2026	ZURAZura Bio Ltd	PPurchase	2,000,000	$6.25	$12,500,000
Oct 24, 2025	IRONDisc Medicine, Inc.	SSale	744,047	$80.47	$59,873,462
Jun 13, 2025	LYBLyondellbasell Industries N.V.	Holdings only	-	-	-
Jun 6, 2025	DOCNDigitalocean Holdings, Inc.	SSale	1,987,060	$28.60	$56,829,916
Dec 23, 2024	WMGWarner Music Group Corp.	Holdings only	-	-	-
Oct 17, 2024	UPBUpstream Bio, Inc.	PPurchase	1,175,000	$17.00	$19,975,000
Aug 5, 2024	DAWNDay One Biopharmaceuticals, Inc.	Holdings only	-	-	-
Jun 20, 2024	IRONDisc Medicine, Inc.	AGrant	416,667	$36.00	$15,000,012
Feb 29, 2024	LYBLyondellbasell Industries N.V.	JOther	3,321	$0.00	$0
Feb 21, 2024	LYBLyondellbasell Industries N.V.	SSale	140,909	$97.7866	$13,779,012
Oct 20, 2023	DAWNDay One Biopharmaceuticals, Inc.	PPurchase	979,667	$10.2076	$10,000,049
Aug 14, 2023	LYBLyondellbasell Industries N.V.	SSale	2,850	$99.2575	$282,884
Jun 20, 2023	IRONDisc Medicine, Inc.	Holdings only	-	-	-
Jun 12, 2023	DAWNDay One Biopharmaceuticals, Inc.	PPurchase	769,230	$13.00	$9,999,990
May 15, 2023	LYBLyondellbasell Industries N.V.	GGift	761,000	$0.00	$0
Mar 16, 2023	WMGWarner Music Group Corp.	Holdings only	-	-	-
Feb 17, 2023	IRONDisc Medicine, Inc.	PPurchase	434,783	$23.00	$10,000,009
Jun 21, 2022	DAWNDay One Biopharmaceuticals, Inc.	PPurchase	1,200,000	$15.00	$18,000,000
Jan 31, 2022	WMGWarner Music Group Corp.	Holdings only	-	-	-
Jan 20, 2022	DAWNDay One Biopharmaceuticals, Inc.	PPurchase	58,818	$14.699	$864,566
Jan 7, 2022	WMGWarner Music Group Corp.	SSale	4,356,680	$40.66	$177,142,609

Showing 1-26 of 26

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Real-time Form 4 intelligence. Smarter insider tracking.

Filed		Top transaction	Shares	Price	Value