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ISSUER PROFILE · CIK 0001537435

Tecogen Inc.TGEN

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

Cross-Reference Snapshot

Activist filings
1
1 SCHEDULE 13G
Distinct filers
1
single filer
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
2.16
as of 2026-05-29

13D/G Filings Timeline · 1 total

FiledFormFilerStakeSharesIntent
2026-06-10 SCHEDULE 13G Portolan Capital Management, LLC view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-05-29 1,073,318 2.16 -13.4%
2026-05-15 1,238,804 1.64 -5.4%
2026-04-30 1,309,404 2.23 +18.5%
2026-04-15 1,104,890 2.10 +6.7%
2026-03-31 1,036,025 1.75 -15.8%
2026-03-13 1,230,740 3.97 -1.0%
2026-02-27 1,243,617 5.94 -0.1%
2026-02-13 1,244,200 3.97 -20.3%
2026-01-30 1,561,973 3.49 -2.5%
2026-01-15 1,601,168 1.59 +15.9%
2025-12-31 1,380,943 1.69 -25.2%
2025-12-15 1,847,105 4.41 -11.9%

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