Lafaille Stephen
SEC insider (Form 3/4/5 filer). CIK 0002074096. VP of Business Development at TECOGEN INC. (TGEN). 11 reported Form 4/5 transactions since Sep 2024; latest on Jun 26, 2026. Located in NORTH BILLERICA, MA.
Companies Lafaille Stephen has filed insider reports for
- TECOGEN INC. (TGEN): Officer, VP of Business Development
Lafaille Stephen
CIK: 0002074096
Transaction Breakdown
Open Market Buys (P)1 (9.1%)
High conviction signal
Open Market Sales (S)4 (36.4%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)2 (18.2%)
Compensation grants
Other (G, F, J, C, D, …)4 (36.4%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
TGEN
TECOGEN INC.
Officer
Discretionary Trading P&L
Holdings
Transaction History (11 total)
- Jun 26, 2026TGEN
TECOGEN INC.
AwardDirect29K shares- - Jul 24, 2025TGEN
TECOGEN INC.
AwardDirect12K shares- - Jun 23, 2025TGEN
TECOGEN INC.
SaleDirect10K shares at avg. $7.25$73K - Jun 23, 2025TGEN
TECOGEN INC.
In-the-MoneyDirect10K shares at avg. $1.10$11K - Jun 6, 2025TGEN
TECOGEN INC.
In-the-MoneyDirect25K shares at avg. $1.10$28K - Jun 6, 2025TGEN
TECOGEN INC.
SaleDirect25K shares at avg. $5.98$150K - Jun 4, 2025TGEN
TECOGEN INC.
SaleDirect15K shares at avg. $5.00$75K - Jun 4, 2025TGEN
TECOGEN INC.
In-the-MoneyDirect15K shares at avg. $0.71$11K - Jun 3, 2025TGEN
TECOGEN INC.
SaleDirect10K shares at avg. $4.88$49K - Jun 3, 2025TGEN
TECOGEN INC.
In-the-MoneyDirect10K shares at avg. $0.71$7K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 26, 2026 | TGEN TECOGEN INC. | Award | 29,013 | - | $0 | Direct |
| Jul 24, 2025 | TGEN TECOGEN INC. | Award | 11,976 | - | - | Direct |
| Jun 23, 2025 | TGEN TECOGEN INC. | Sale | 10,000 | $7.25 | $72,500 | Direct |
| Jun 23, 2025 | TGEN TECOGEN INC. | In-the-Money | 10,000 | $1.10 | $11,000 | Direct |
| Jun 6, 2025 | TGEN TECOGEN INC. | In-the-Money | 25,000 | $1.10 | $27,500 | Direct |
| Jun 6, 2025 | TGEN TECOGEN INC. | Sale | 25,000 | $5.98 | $149,500 | Direct |
| Jun 4, 2025 | TGEN TECOGEN INC. | Sale | 15,000 | $5.00 | $75,000 | Direct |
| Jun 4, 2025 | TGEN TECOGEN INC. | In-the-Money | 15,000 | $0.71 | $10,650 | Direct |
| Jun 3, 2025 | TGEN TECOGEN INC. | Sale | 10,000 | $4.88 | $48,800 | Direct |
| Jun 3, 2025 | TGEN TECOGEN INC. | In-the-Money | 10,000 | $0.71 | $7,100 | Direct |
1-10 of 11 transactions