Latest Period
Q1 2026
Security Snapshot
TECOGEN INC. - Common Stock, $0.001 par value (TGEN) Institutional Ownership
CUSIP: 87876P201
13F Institutional Holders and Ownership History from Q2 2014 to Q1 2026
Institutions Reporting
62
Shares (Excl. Options)
7,788,682
Price
$2.56
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- Security type / class
- Equity / Common Stock, $0.001 par value
- Symbol
- TGEN on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 7,788,682
- Total 13F value
- $19,942,388
- Portfolio coverage rank
- 0%
- Share change
- +170,122
- Value change
- -$500,394
- Number of holders
- 62
- Shares outstanding
- 25,572,222
- SEC-reported price per share
- $5.35
- Insider filing price
- $5.35
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- TGEN - TECOGEN INC. - Common Stock, $0.001 par value is tracked under CUSIP 87876P201.
- 62 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 65 to 62 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $37,646,736 to $19,942,388.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 62 institutions filings for Q1 2026.
Security key
87876P201
Latest holder period
Q1 2026
13F holders
62
13D/G owners
1
CIK / CUSIP context first
Open Q1 2026 holders
TGEN full holder history
TECOGEN INC. SEC filings
TECOGEN INC. company facts
TECOGEN INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 87876P201:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
TGEN
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Natsis Tryfon | 1.8% | $3,650,179 | 460,300 | Tryfon Natsis and Depoina Pantopoulou, as Joint Tenants with the Right of Survivorship | 30 Jun 2025 |
As of 31 Mar 2026, 62 institutional investors reported holding 7,788,682 shares of TECOGEN INC. - Common Stock, $0.001 par value (TGEN). This represents 30% of the company’s total 25,572,222 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
27%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 3% | 769,964 | 0% | 0% | $1,971,108 |
| BARD ASSOCIATES INC | 2.7% | 688,309 | -0.12% | 0.44% | $1,762,072 |
| Clear Harbor Asset Management, LLC | 2.5% | 650,000 | +6.6% | 0.12% | $1,664,000 |
| Portolan Capital Management, LLC | 1.7% | 443,555 | -0.51% | 0.06% | $1,135,501 |
| HERALD INVESTMENT MANAGEMENT Ltd | 1.6% | 420,000 | 0% | 0.15% | $1,079,400 |
| Arosa Capital Management LP | 1.4% | 350,000 | 0% | 0.58% | $896,000 |
| Palisades Investment Partners, LLC | 1.3% | 333,907 | -14% | 0.34% | $854,802 |
| UBS Group AG | 1.3% | 319,836 | +205% | 0% | $818,781 |
| Meros Investment Management, LP | 1.1% | 291,705 | 0.32% | $746,765 | |
| RENAISSANCE TECHNOLOGIES LLC | 1.1% | 272,300 | +401% | 0% | $697,088 |
| GENDELL JEFFREY L | 0.96% | 245,541 | -17% | 0.01% | $628,585 |
| Integrated Wealth Concepts LLC | 0.85% | 218,380 | 0% | $559,053 | |
| MARSHALL WACE, LLP | 0.81% | 207,467 | -28% | 0% | $531,114 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.75% | 192,002 | +7.9% | 0% | $491,827 |
| RAYMOND JAMES FINANCIAL INC | 0.73% | 185,794 | +86% | 0% | $475,633 |
| BlackRock, Inc. | 0.72% | 184,779 | -3.4% | 0% | $473,034 |
| CITADEL ADVISORS LLC | 0.58% | 147,472 | +201% | 0% | $377,528 |
| NEW YORK STATE COMMON RETIREMENT FUND | 0.54% | 137,200 | 0% | 0% | $351,232 |
| HighTower Advisors, LLC | 0.52% | 132,665 | 0% | 0% | $339,623 |
| JANE STREET GROUP, LLC | 0.46% | 117,342 | -43% | 0% | $300,396 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.43% | 109,457 | -64% | 0% | $280,210 |
| THOMPSON DAVIS & CO., INC. | 0.39% | 99,000 | -18% | 0.17% | $253,440 |
| VANGUARD FIDUCIARY TRUST CO | 0.38% | 96,442 | 0% | 0% | $246,892 |
| GSA CAPITAL PARTNERS LLP | 0.37% | 94,170 | +385% | 0.01% | $241,000 |
| Granahan Investment Management, LLC | 0.35% | 88,496 | -50% | 0.01% | $226,550 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
45
Latest
Q1 2026
Rows shown
1-25 of 45
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 7,788,682 | $19,942,388 | -$500,394 | $2.56 | 62 |
| 2025 Q4 | 7,618,774 | $37,646,736 | -$3,776,667 | $4.94 | 65 |
| 2025 Q3 | 7,727,290 | $68,035,883 | +$34,021,652 | $8.81 | 70 |
| 2025 Q2 | 3,850,152 | $26,220,032 | +$26,134,804 | $6.80 | 29 |
| 2025 Q1 | 12,500 | $28,000 | +$28,000 | $2.24 | 1 |
| 2024 Q1 | 0 | $0 | -$260,073 | $5.35 | 0 |
| 2023 Q4 | 321,078 | $260,073 | $0.81 | 1 | |
| 2023 Q3 | 321,078 | $272,916 | $0.85 | 1 | |
| 2023 Q2 | 321,078 | $320,917 | $1.00 | 1 | |
| 2023 Q1 | 321,078 | $381,280 | $1.19 | 1 | |
| 2022 Q4 | 321,078 | $401,000 | $1.25 | 1 | |
| 2022 Q3 | 321,078 | $304,000 | $0.95 | 1 | |
| 2022 Q2 | 321,078 | $362,000 | $1.13 | 1 | |
| 2022 Q1 | 321,078 | $529,000 | -$12,000 | $1.65 | 1 |
| 2021 Q4 | 331,482 | $397,000 | $1.18 | 2 | |
| 2021 Q3 | 321,078 | $581,000 | $1.81 | 1 | |
| 2021 Q2 | 321,078 | $600,000 | $1.87 | 1 | |
| 2021 Q1 | 321,078 | $545,000 | $1.70 | 1 | |
| 2020 Q4 | 321,078 | $391,000 | $1.22 | 1 | |
| 2020 Q3 | 321,078 | $292,000 | -$67,000 | $0.91 | 1 |
| 2020 Q2 | 415,508 | $291,000 | -$2,949,223 | $0.71 | 3 |
| 2020 Q1 | 3,584,041 | $3,331,556 | -$271,834 | $0.93 | 19 |
| 2019 Q4 | 3,846,695 | $8,166,152 | -$318,320 | $2.12 | 17 |
| 2019 Q3 | 4,014,436 | $9,514,896 | -$179,435 | $2.38 | 21 |
| 2019 Q2 | 4,089,784 | $15,245,500 | +$274,651 | $3.75 | 19 |