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PERCEPTIVE ADVISORS LLC

CIK 0001224962

9 SPACs with a current declared position, filed between Feb 16, 2021 and Jul 20, 2026. 2 of them were re-affirmed in the last 12 months. The rest are the filer’s last word on a position, not proof it is still held: an amendment is only required on a material change, so a fund that sells below 5% may never file again.

SPACs declared
9
every position whose latest statement stands — the record
Re-affirmed in 12 months
2
filed inside 365 days — what a reader means by "owns"
Still live
2
positions in SPACs still searching or in an announced deal
Median stake
6.7%
7.9% across the re-affirmed positions · max 12.8%
8 passive (13G)1 activist (13D)27 superseded statements on file

Positions

one row per SPAC — every figure read from the accession in the Source column
9 of 9 shown · 7 positions have not been amended in over a year
SPACVotingDispositiveSource
HSAQHealth Sciences Acquisitions Corp 23 reporting persons on this schedule12.8%4,592,5560 / 4,592,5560 / 4,592,556Closed (deSPAC)Jul 17, 2024StaleSC 13G/A0001193125-24-180405 opens on sec.gov in a new tab6 earlier statements
LACQLeisure Acquisition Corp.3 reporting persons on this schedule8.7%1,300,0000 / 1,300,0000 / 1,300,000Closed (deSPAC)Oct 29, 2024StaleSC 13G0001193125-24-246648 opens on sec.gov in a new tab
RACCResearch Alliance Corp III8.2%750,000not statednot statedDeal announcedMay 28, 2026FreshSC 13G0001193125-26-245154 opens on sec.gov in a new tab
RACDResearch Alliance Corp IV7.7%700,000not statednot statedSearchingJul 20, 2026FreshSC 13G0001193125-26-308898 opens on sec.gov in a new tab
BLSABCLS Acquisition Corp.3 reporting persons on this schedule6.7%1,000,0000 / 1,000,0000 / 1,000,000LiquidatedFeb 15, 2022StaleSC 13G/A0001193125-22-042405 opens on sec.gov in a new tab6 earlier statements
ARYBARYA Sciences Acquisition Corp II3 reporting persons on this schedule6.2%10,965,1930 / 10,965,1930 / 10,965,193Closed (deSPAC)Oct 17, 2023StaleSC 13D/A · may seek to influence control0001193125-23-257707 opens on sec.gov in a new tab6 earlier statements
SCPESC Health Corp3 reporting persons on this schedule5.8%1,000,0000 / 1,000,0000 / 1,000,000Closed (deSPAC)Feb 16, 2021StaleSC 13G0001193125-21-044768 opens on sec.gov in a new tab
RACATherapeutics Acquisition Corp.3 reporting persons on this schedule1.3%1,193,9950 / 1,193,9950 / 1,193,995Closed (deSPAC)Feb 15, 2022StaleSC 13G/A0001193125-22-042322 opens on sec.gov in a new tab3 earlier statements
RACBResearch Alliance Corp. II3 reporting persons on this schedule0.0%00 / 00 / 0LiquidatedFeb 14, 2023StaleSC 13G/A0001193125-23-038763 opens on sec.gov in a new tab6 earlier statements
27 superseded statements (newest 9 shown)

An amendment replaces a stake as current; it never erases the record of it. These are the earlier statements, each with the accession that replaced it — kept because “what did this filer say in 2022” is a different question from “what does it say now”, and only the second one has an answer above.

  • HSAQ Health Sciences Acquisitions Corp 26.8% · SC 13G/A Feb 14, 2024replaced Jul 17, 2024 by 0001193125-24-180405
  • HSAQ Health Sciences Acquisitions Corp 26.8% · SC 13G Sep 13, 2023replaced Feb 14, 2024 by 0001193125-24-036447
  • ARYB ARYA Sciences Acquisition Corp II6.4% · SC 13D/A Apr 25, 2023replaced Oct 17, 2023 by 0001193125-23-257707
  • ARYB ARYA Sciences Acquisition Corp II6.4% · SC 13D Apr 21, 2023replaced Apr 25, 2023 by 0001193125-23-114928
  • RACB Research Alliance Corp. II6.5% · SC 13G/A Feb 14, 2022replaced Feb 14, 2023 by 0001193125-23-038763
  • RACB Research Alliance Corp. II6.0% · SC 13G Mar 26, 2021replaced Feb 14, 2022 by 0001193125-22-042208
  • RACA Therapeutics Acquisition Corp.10.7% · SC 13G Feb 16, 2021replaced Feb 15, 2022 by 0001193125-22-042322
  • BLSA BCLS Acquisition Corp.7.0% · SC 13G/A Feb 16, 2021replaced Feb 15, 2022 by 0001193125-22-042405
  • BLSA BCLS Acquisition Corp.7.0% · SC 13G Oct 28, 2020replaced Feb 16, 2021 by 0001193125-21-044716

Reporting persons on this filer's schedules

one filer, several names — collapsed once, shown in full

A joint Schedule 13 names every person who beneficially owns the shares — the management company, the funds it advises, the general partner and often the individual who controls all three. They report the same shares. Counting them separately would publish this filer’s footprint two or three times over, so they are counted once, under CIK 0001224962. This filer has named 3 of them across the schedules in the table above:

  • Joseph Edelman
  • Perceptive Advisors
  • Perceptive Life Sciences Master Fund

Appears alongside

other filers with a current declared position in the same SPACs

Co-occurrence in the disclosure record, and nothing more. It is not evidence of a group, an agreement or acting in concert — filers who act as a group say so on the cover page and file a 13D. Two arbitrage funds above 5% in the same shell is the ordinary shape of this market. The second number restricts both sides to statements filed in the last 12 months, because a 2021 stake beside a 2026 one is two facts about two different years.

Every percentage above is the one printed on the cover page of the filing cited beside it — a percentage of the shares outstanding on that date. A SPAC’s float collapses at each redemption, so two of these percentages are percentages of two different companies and they do not add. Rows are one per SPAC: where a joint schedule names several reporting persons, the largest single figure is shown rather than their sum, because a manager and the funds it advises beneficially own the same shares. Nothing on this page is derived from a 13F, a vendor holdings file or a press release. See how this is built.