TGEN insider buying and SEC filings, explained
Tecogen Inc. · CIK 1537435
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$127K
Insiders who bought
5
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Apr 24, 2026 | Purchase (code P) | Ahmed Ghoniem (Director) bought 12,723 shares at $0.7900 ($10K), reported as a purchase (code P). New position of 12,723 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 27, 2026 |
| Apr 13, 2026 | Purchase (code P) | Susan B Hirsch (Director) bought 5,000 shares at $3.73 ($19K), reported as a purchase (code P). Holdings up 2% to 265,416 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 14, 2026 |
| Mar 27, 2026 | Purchase (code P) | Susan B Hirsch (Director) bought 10,000 shares at $2.54 ($25K), reported as a purchase (code P). Holdings up 4% to 260,416 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 27, 2026 |
| Mar 27, 2026 | Purchase (code P) | Earl Lewis (Director) bought 5,000 shares at $2.52 ($13K), reported as a purchase (code P). Holdings up <1% to 1,011,006 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 27, 2026 |
| Mar 26, 2026 | Purchase (code P) | Earl Lewis (Director) bought 5,000 shares at $2.88 ($14K), reported as a purchase (code P). Holdings up <1% to 1,006,006 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 27, 2026 |
| Mar 23, 2026 | Purchase (code P) | John Kimball Whiting IV (General Counsel & Secretary) bought 10,000 shares at $2.38 ($24K), reported as a purchase (code P). Holdings up 79% to 22,612 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 23, 2026 |
| Mar 20, 2026 | Purchase (code P) | Roger P. Deschenes (CAO) bought 10,000 shares at $2.23 ($22K), reported as a purchase (code P). Holdings up 23% to 52,962 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 23, 2026 |
| Mar 20, 2026 | Purchase (code P) | Abinand Rangesh (CEO and Director) bought 3,000 shares at $2.30 ($7K), reported as a purchase (code P). Holdings up 5% to 67,193 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 23, 2026 |
12 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
5 insiders bought in 30 days
$127K in purchases since Mar 20, 2026 · Purchases traded Mar 20, 2026 to Apr 24, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Roger P. Deschenes (CAO) | $22K | Mar 20, 2026 | SEC filing |
| John Kimball Whiting IV (General Counsel & Secretary) | $24K | Mar 23, 2026 | SEC filing |
| Earl Lewis (Director) | $14K | Mar 26, 2026 | SEC filing |
| Earl Lewis (Director) | $13K | Mar 27, 2026 | SEC filing |
| Susan B Hirsch (Director) | $25K | Mar 27, 2026 | SEC filing |
| Susan B Hirsch (Director) | $19K | Apr 13, 2026 | SEC filing |
| Ahmed Ghoniem (Director) | $10K | Apr 24, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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