Latest Period
Q2 2026
Security Snapshot
TECOGEN INC. - Common Stock, $0.001 par value per share (TGEN) Institutional Ownership
CUSIP: 87876P201
13F Institutional Holders and Ownership History from Q2 2014 to Q2 2026
Institutions Reporting
69
Shares (Excl. Options)
9,481,272
Price
$5.22
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- Security type / class
- Equity / Common Stock, $0.001 par value per share
- Symbol
- TGEN on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 9,481,272
- Total 13F value
- $49,487,283
- Portfolio coverage rank
- 0%
- Share change
- +1,692,590
- Value change
- +$10,339,741
- Number of holders
- 69
- Shares outstanding
- 29,908,131
- SEC-reported price per share
- $3.73
- Insider filing price
- $3.73
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 per share is tracked under CUSIP 87876P201.
- 69 institutions reported positions in Q2 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 62 to 69 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $19,942,388 to $49,487,283.
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 69 institutions filings for Q2 2026.
Security key
87876P201
Latest holder period
Q2 2026
13F holders
69
13D/G owners
2
CIK / CUSIP context first
Open Q2 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
2
Security
TGEN
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Portolan Capital Management, LLC | 5.2% | $8,304,441 | 1,552,232 | Portolan Capital Management, LLC | 03 Jun 2026 | |||
| 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 30 Jun 2026, 69 institutional investors reported holding 9,481,272 shares of TECOGEN INC. - Common Stock, $0.001 par value per share (TGEN). This represents 32% of the company’s total 29,908,131 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
28%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Portolan Capital Management, LLC | 5.2% | 1,551,113 | +250% | 0.3% | $8,096,810 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.6% | 788,670 | +2.4% | 0% | $4,116,857 |
| BARD ASSOCIATES INC | 2.3% | 682,221 | -0.88% | 0.79% | $3,561,194 |
| Clear Harbor Asset Management, LLC | 2.2% | 650,000 | 0% | 0.21% | $3,393,000 |
| HERALD INVESTMENT MANAGEMENT Ltd | 1.4% | 420,000 | 0% | 0.3% | $2,188,200 |
| GRATIA CAPITAL, LLC | 1.3% | 388,660 | 2.3% | $2,028,805 | |
| UBS Group AG | 1.2% | 363,049 | +14% | 0% | $1,895,117 |
| Meros Investment Management, LP | 1.2% | 353,487 | +21% | 0.59% | $1,845,202 |
| Palisades Investment Partners, LLC | 1.1% | 323,090 | -3.2% | 0.48% | $1,686,530 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.1% | 315,831 | +189% | 0% | $1,648,638 |
| MORGAN STANLEY | 1% | 301,695 | +293% | 0% | $1,574,848 |
| RAYMOND JAMES FINANCIAL INC | 0.97% | 290,260 | +56% | 0% | $1,515,157 |
| BlackRock, Inc. | 0.84% | 251,464 | +36% | 0% | $1,312,642 |
| CITADEL ADVISORS LLC | 0.81% | 242,276 | +64% | 0% | $1,264,681 |
| Huntleigh Advisors, Inc. | 0.74% | 220,074 | 0.16% | $1,148,788 | |
| HEARTLAND ADVISORS INC | 0.61% | 182,100 | 0.04% | $950,562 | |
| GEODE CAPITAL MANAGEMENT, LLC | 0.6% | 180,870 | -5.8% | 0% | $944,802 |
| THOMPSON DAVIS & CO., INC. | 0.48% | 144,840 | +46% | 0.45% | $755,856 |
| NEW YORK STATE COMMON RETIREMENT FUND | 0.46% | 137,200 | 0% | 0% | $716,184 |
| GSA CAPITAL PARTNERS LLP | 0.42% | 126,451 | +34% | 0.04% | $660,000 |
| Arosa Capital Management LP | 0.42% | 125,000 | -64% | 0.57% | $652,500 |
| Integrated Wealth Concepts LLC | 0.37% | 112,080 | -49% | 0% | $585,058 |
| Apis Capital Advisors, LLC | 0.37% | 112,000 | +45% | 0.06% | $584,640 |
| VANGUARD FIDUCIARY TRUST CO | 0.35% | 105,956 | +9.9% | 0% | $553,090 |
| GOLDMAN SACHS GROUP INC | 0.23% | 69,530 | +177% | 0% | $362,946 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
46
Latest
Q2 2026
Rows shown
1-25 of 46
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 9,481,272 | $49,487,283 | +$10,339,741 | $5.22 | 69 |
| 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 | $3.73 | 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 |