Quick Takeaways
- STR Sub Inc. has 29 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are not currently available.
Insider Transactions Reported by 29 Insiders of STR Sub Inc.
- Location
- Denver, CO
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 12 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
STR Sub Inc. executives and other stock owners filed with the SEC include:
Top shareholders of STR Sub Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Blackstone Holdings III L.P. |
3/4/5
|
10%+ Owner |
—
mixed-class rows
|
24,391,476
mixed-class rows
|
— | — | 07 Jun 2022 | |
| BROOKFIELD Corp /ON/ |
3/4/5
|
Director, 10%+ Owner |
—
class O/S missing
|
12,935,120
|
— | — | 07 Jun 2022 | |
| Source Energy Partners, LLC |
3/4/5
|
Director, 10%+ Owner |
—
class O/S missing
|
12,935,120
|
— | — | 07 Jun 2022 | |
| Daniel C. Herz |
3/4/5
|
CEO and President, Director |
—
class O/S missing
|
1,329,096
|
— | — | 12 May 2021 | |
| Bryan Gunderson |
3/4/5
|
CEO and President, Director |
—
class O/S missing
|
113,110
|
— | — | 07 Jun 2022 | |
| Michael J. Downs |
3/4/5
|
Chief Operating Officer |
—
class O/S missing
|
93,818
|
— | — | 07 Jun 2022 | |
| Matthew B. Ockwood |
3/4/5
|
Chief Financial Officer |
—
class O/S missing
|
60,000
|
— | — | 28 Jun 2021 | |
| William David Anderson |
3/4/5
|
Director |
—
class O/S missing
|
43,524
|
— | — | 23 Aug 2021 | |
| Stephen J. Pilatzke |
3/4/5
|
Chief Accounting Officer |
—
class O/S missing
|
39,500
|
— | — | 07 Jun 2022 |
Recent Insider Transactions by Companies or Individuals for STR Sub Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* An asterisk sign (*) next to the price indicates that the price is likely invalid.