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ISSUER PROFILE · CIK 0000944809 · CUSIP 68375N103

OPKO HEALTH, INC.OPK

7 13D/G filings 2 distinct filers 0 insider transactions (365d)

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

Median 30d
avg —
Median 60d
avg —
Median 90d
avg —
Median 180d
avg —

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

Cross-Reference Snapshot

Activist filings
7
2 SCHEDULE · 5 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
10.91
as of 2026-05-29

13D/G Filings Timeline · 7 total

FiledFormFilerStakeSharesIntent
2025-10-01 SCHEDULE FROST PHILLIP MD ET AL 32.80% 252,884,406 view →
2025-04-03 SCHEDULE HSIAO JANE PH D 4.50% 35,677,284 view →
2024-01-22 SC FROST PHILLIP MD ET AL view →
2023-02-21 SC FROST PHILLIP MD ET AL view →
2020-03-20 SC HSIAO JANE PH D view →
2019-03-22 SC FROST PHILLIP MD ET AL view →
2019-03-20 SC FROST PHILLIP MD ET AL view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-05-29 33,037,706 10.91 +1.2%
2026-05-15 32,656,834 16.54 -3.3%
2026-04-30 33,763,628 12.69 +2.4%
2026-04-15 32,978,308 17.69 -1.9%
2026-03-31 33,615,361 10.91 +2.6%
2026-03-13 32,776,490 14.38 +4.5%
2026-02-27 31,374,396 17.73 -1.0%
2026-02-13 31,677,429 10.95 +2.6%
2026-01-30 30,881,465 8.38 +1.2%
2026-01-15 30,515,491 9.75 +0.6%
2025-12-31 30,340,574 7.16 -6.9%
2025-12-15 32,577,197 10.82 +3.7%

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