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Cerus Corp

CERS
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
SEC CIK
0001020214

In the last 90 days, Cerus Corp insiders filed 0 open-market purchases and 6 sales; 185 institutions reported holding it in 13F filings for Q2 2026, worth $437.9M in total; ARK Invest is the only superinvestor holding it.

Holders of 5% or more of CERS

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Cerus Corp, largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of CERS
HolderLatest formStakeChangeFirst filedLatest filingFiling
ARK Investment Management LLCSuperinvestorARK Invest13G/A8.95%17.9M shares−1.10 ppfrom 10.05%Feb 16, 20218 filingsAug 14, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

32 Schedule 13D and 13G filings on Cerus Corp, newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on CERS
Filed (ET)FilerFormStakeChangeEvent dateFiling
Aug 14, 20264:00 PM ETBaker Bros. Advisors LPand 3 others13G/A3.20%6.42M shares−2.00 ppfrom 5.20%Below 5%Jun 30, 2026SEC
Aug 14, 20262:50 PM ETARK Investment Management LLCand 1 otherSuperinvestorARK Invest13G/A8.95%17.9M shares−1.10 ppfrom 10.05%Jun 30, 2026SEC
Aug 13, 20269:00 AM ETSoleus Capital Master Fund, L.P.and 5 others13G/A1.20%2.50M shares−3.90 ppfrom 5.10%Below 5%Jun 30, 2026SEC
Mar 26, 20265:16 PM ETVanguard Group Inc13G/A0.00%0 shares–Below 5%Mar 13, 2026SEC
Mar 24, 20264:45 PM ETSoleus Capital Master Fund, L.P.and 5 others13G5.10%9.83M sharesNewMar 23, 2026SEC
Nov 14, 20254:24 PM ETBaker Bros. Advisors LPand 3 others13G/A5.20%10.0M shares−1.60 ppfrom 6.80%Sep 30, 2025SEC
Aug 14, 20254:26 PM ETBaker Bros. Advisors LPand 3 others13G/A6.80%12.9M shares–Jun 30, 2025SEC
Jul 30, 20251:21 PM ETARK Investment Management LLCand 1 otherSuperinvestorARK Invest13G/A10.05%19.2M shares−1.16 ppfrom 11.21%Jun 30, 2025SEC
Feb 14, 202511:23 AM ETARK Investment Management LLCSuperinvestorARK Invest13G/A11.21%20.8M shares+1.37 ppfrom 9.84%Dec 31, 2024SEC
Jan 10, 20259:43 PM ETARK Investment Management LLCSuperinvestorARK Invest13G/A9.84%18.2M shares–Sep 30, 2024SEC
Nov 13, 2023Baker Bros. Advisors LP13G/AOld format–––SEC
Feb 14, 2023Baker Bros. Advisors LP13G/AOld format–––SEC
Feb 10, 2023Nikko Asset Management Americas, Inc.13G/AOld format–––SEC
Feb 10, 2023ARK Investment Management LLCSuperinvestorARK Invest13G/AOld format–––SEC
Feb 10, 2023ARK Investment Management LLCSuperinvestorARK Invest13G/AOld format–––SEC
Feb 9, 2023Vanguard Group Inc13G/AOld format–––SEC
Feb 3, 2023Sumitomo Mitsui Trust Holdings, Inc.13G/AOld format–––SEC
Jan 31, 20231:58 PM ETBlackRock Inc.13G/AOld format–––SEC
Jan 9, 2023Primecap Management Co13G/AOld format–––SEC
Feb 14, 2022Nikko Asset Management Americas, Inc.13G/AOld format–––SEC
Feb 10, 2022Primecap Management Co13G/AOld format–––SEC
Feb 9, 2022Vanguard Group Inc13G/AOld format–––SEC
Feb 9, 2022ARK Investment Management LLCSuperinvestorARK Invest13G/AOld format–––SEC
Feb 4, 2022Sumitomo Mitsui Trust Holdings, Inc.13G/AOld format–––SEC
Feb 1, 20225:08 PM ETBlackRock Inc.13G/AOld format–––SEC
Feb 16, 2021Baker Bros. Advisors LP13G/AOld format–––SEC
Feb 16, 2021ARK Investment Management LLCSuperinvestorARK Invest13G/AOld format–––SEC
Feb 12, 2021Primecap Management Co13G/AOld format–––SEC
Feb 11, 2021Nikko Asset Management Americas, Inc.13G/AOld format–––SEC
Feb 10, 2021Vanguard Group Inc13G/AOld format–––SEC
Feb 5, 2021Sumitomo Mitsui Trust Holdings, Inc.13G/AOld format–––SEC
Jan 28, 20215:56 PM ETBlackRock Inc.13G/AOld format–––SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Cerus Corp shares.

No Form 144 notices for Cerus Corp are on file.