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ISSUER PROFILE · CIK 0001434524 · CUSIP 185064102

ClearSign Technologies CorpCLIR

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

Post-Filing Returns · across 1 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
2
1 SCHEDULE · 1 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
2.27
as of 2026-03-31

13D/G Filings Timeline · 2 total

FiledFormFilerStakeSharesIntent
2025-02-19 SCHEDULE clirSPV LLC 4.30% 2,249,027 view →
2018-03-07 SC MARLETT CHRISTOPHER A view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-03-31 45,549 2.27 -82.7%
2026-03-13 263,955 1.05 +48.3%
2026-02-27 177,980 3.68 +9.8%
2026-02-13 162,090 1.54 +9.3%
2026-01-30 148,329 1.00 -6.1%
2026-01-15 158,030 1.00 +1.4%
2025-12-31 155,825 1.53 -9.1%
2025-12-15 171,348 1.32 +3.6%

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