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ISSUER PROFILE · CIK 0001537435

Tecogen Inc.TGEN

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

Cross-Reference Snapshot

Activist filings
1
1 SCHEDULE 13G
Distinct filers
1
single filer
Insiders (365d)
1
1 buys · 0 sales
Latest short DTC
5.68
as of 2026-08-31

13D/G Filings Timeline · 1 total

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

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-06-26 Whiting John Kimball IV officer Award 19,342

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-08-31 1,126,784 5.68 -4.7%
2026-08-14 1,182,335 6.41 +1.7%
2026-07-31 1,162,337 4.07 -8.9%
2026-07-15 1,275,570 5.07 +1.7%
2026-06-30 1,254,007 5.93 +10.6%
2026-06-15 1,133,587 2.98 +5.6%
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%

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