Holder evidence
50
SEC ownership of STAR GROUP, L.P.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001002590.
Lead holder
Hartree Partners, LP
13D/G signal
Hartree Partners, LP
Latest evidence
31 Mar 2026
- CIK
- 0001002590
- Symbol
- SGU on NYSE
- Location
- Stamford, CT
- SEC evidence mix
- 13D/G, 3/4/5, and 13F
- Lead holder
- Hartree Partners, LP
- Latest large-stake holder
- Hartree Partners, LP
- Latest evidence date
- 31 Mar 2026
Issuer identity
Ownership snapshot
Ownership snapshot
Top shareholders of STAR GROUP, L.P. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Lead holder
Hartree Partners, LP
13D/G signal
Hartree Partners, LP
Evidence rows
50
Latest as of
31 Mar 2026
13D/G
3/4/5
13F
Lead comparable stake: 9.8%
13D/G row: Hartree Partners, LP
Showing 1-8 of 50 holder rows.
Rank 1 holder
Hartree Partners, LP
13D/G
3/4/5
13F
- Ownership
- 9.8%
- Position
- $42.85M
Rank 2 holder
Bandera Partners LLC
13D/G
3/4/5
13F
- Ownership
- 8.7%
- Position
- $34.92M
Rank 3 holder
C. Scott Baxter
3/4/5
- Ownership
- 0.04%
- Position
- $176.8K
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Hartree Partners, LP |
13D/G
3/4/5
13F
10%+ Owner · Company
|
9.8%
|
$42,851,428
3,400,907 shares
|
$0 | 31 Mar 2025 |
| Bandera Partners LLC |
13D/G
3/4/5
13F
Gramm Jefferson · Other*, 10%+ Owner · Company
|
8.7%
|
$34,920,303
2,951,843 shares
|
$0 | 30 Jun 2025 |
| C. Scott Baxter |
3/4/5
Director
|
0.04%
|
$176,850
15,000 shares
|
+$176,850 | 13 Aug 2025 |
| Jeffrey S. Hammond |
3/4/5
Chief Operating Officer
|
0.02%
|
$57,623
5,739 shares
|
+$2,496 | 05 Nov 2025 |
| Summit Trail Advisors, LLC |
13F
Company
|
6%
|
$24,830,160
2,022,000 shares
|
— | 31 Mar 2026 |
| Lubar & Co., Inc |
13F
Company
|
3.8%
|
$15,914,696
1,295,985 shares
|
— | 31 Mar 2026 |
| Oakcliff Capital Partners, LP |
13F
Company
|
3.2%
|
$13,498,655
1,099,239 shares
|
— | 31 Mar 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
2.7%
|
$11,176,126
910,108 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$179,346.
Buys
$179,346
Insiders: 2
Sells
$0
Insiders: 0
Net
+$179,346
Shares: +15,209
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 15,209
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 105 | 0 | $1,257 | $0 | +$1,257 |
| 9-12 | 15,104 | 0 | $178,088 | $0 | +$178,088 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-8 of 8 reporting-owner rows connected to STAR GROUP, L.P.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
8
Lead holder
Hartree Partners, LP
Net 12M change
+$179,346
Latest report
05 Nov 2025
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Hartree Partners, LP | 10%+ Owner | $40,266,738 | Mixed | 06 Aug 2025 | ||
| Bandera Partners LLC | Other*, 10%+ Owner | $33,054,134 | Filing P/S | 30 May 2025 | ||
| Bryan H. Lawrence | Director | $19,035,293 | Mixed | 29 Aug 2022 | ||
| Paul A. Vermylen Jr. | Director | $16,980,675 | Mixed | 03 Nov 2021 | ||
| Richard F. Ambury | Chief Financial Officer | $653,505 | Mixed | 23 May 2022 | ||
| Jeffrey M. Woosnam | President and CEO, Director | $225,918 | Mixed | 23 May 2022 | ||
| C. Scott Baxter | Director | $176,850 | +$176,850 | +100% | Filing P/S | 13 Aug 2025 |
| Jeffrey S. Hammond | Chief Operating Officer | $57,623 | +$2,496 | +4.5% | Filing P/S | 05 Nov 2025 |
Recent insider transactions for STAR GROUP, L.P.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Reported value | Reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Jeffrey S. Hammond | SGU | Common Units | Purchase | 1.54% | $1,257 | $11.99 | 105 | 6,903 | 05 Nov 2025 | Direct |
| C. Scott Baxter | SGU | Common Units | Purchase | $176,850 | $11.79 | 15,000 | 15,000 | 13 Aug 2025 | Direct | |
| Jeffrey S. Hammond | SGU | Common Units | Purchase | 1.56% | $1,238 | $11.89 | 104 | 6,798 | 06 Aug 2025 | Direct |
* indicates a reported price that failed the local validity check.