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ISSUER PROFILE · CIK 0001720580 · CUSIP 007002108

Adicet Bio, Inc.ACET

8 13D/G filings 4 distinct filers 0 insider transactions (365d)
1 UNCLEAR

Post-Filing Returns · across 2 activist filings on this issuer

Median 30d
-31.1%
avg -31.1%
Median 60d
-43.6%
avg -43.6%
Median 90d
-45.8%
avg -45.8%
Median 180d
-53.6%
avg -53.6%

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
8
1 SCHEDULE 13D/A · 1 SCHEDULE · 6 SC
Distinct filers
4
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
4.15
as of 2026-05-29

13D/G Filings Timeline · 8 total

FiledFormFilerStakeSharesIntent
2026-04-10 SCHEDULE 13D/A ORBIMED ADVISORS LLC 8.80% 844,787 UNCLEAR view →
2025-10-10 SCHEDULE ORBIMED ADVISORS LLC 9.60% 14,772,598 view →
2024-01-29 SC ORBIMED ADVISORS LLC view →
2021-12-14 SC ORBIMED ADVISORS LLC view →
2021-03-16 SC Abingworth LLP view →
2020-12-03 SC Schindel Yair Chaim view →
2019-12-19 SC PureTech Health LLC view →
2019-03-25 SC ORBIMED ADVISORS LLC view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-05-29 517,922 4.15 -11.9%
2026-05-15 587,837 5.68 +6.2%
2026-04-30 553,507 5.65 -7.5%
2026-04-15 598,458 3.17 -8.8%
2026-03-31 656,546 5.95 +3.4%
2026-03-13 634,967 5.86 -0.8%
2026-02-27 640,053 4.58 -8.9%
2026-02-13 702,375 3.02 +1.5%
2026-01-30 691,994 4.38 +0.2%
2026-01-15 690,550 3.27 +7.4%
2025-12-31 642,724 3.11 -95.7%
2025-12-15 14,910,583 5.21 +40.3%

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