EROC · Insider Trading
ERock, Inc.
Every open-market purchase and sale reported by EROC officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-04 | Walter Thomas McAndrew Jr. | 10%+ Owner | J | −414,566 | — |
| 2026-06-15 | Hans Kobler | Director | J | +13,309,691 | — |
| 2026-06-15 | Energy Impact Fund (FT-B) LP | 10%+ Owner | J | +66,548,455 | — |
| 2026-06-12 | Livingston Satterthwaite | Director | A | +13,024 | — |
| 2026-06-12 | Robert Ian Blakely | Chief Financial Officer | D | −449,233 | — |
| 2026-06-12 | Mark R Patterson | Director | A | +13,024 | — |
| 2026-06-12 | Dan Brouillette | Director | A | +13,024 | — |
| 2026-06-12 | Corey Amthor | President | D | −617,442 | — |
| 2026-06-12 | Charles D Boynton | Director | A | +13,024 | — |
| 2015-10-08 | William Kemper White | Director | D | −113,285 | — |
| 2015-10-08 | Herbert C Williamson III | Director | D | −86,704 | — |
| 2015-10-08 | William A Smith | Director | D | −107,158 | — |
| 2015-10-08 | Peggy A Heeg | Director | D | −86,704 | — |
| 2015-10-08 | Philip B Smith | Director | D | −115,646 | — |
| 2015-05-19 | William A Smith | Director | A | +30,738 | — |
| 2015-05-19 | Peggy A Heeg | Director | A | +30,738 | — |
| 2015-05-19 | Lawrence J. Thuillier | VP & Corporate Controller | F | −4,070 | −$9.93K |
| 2015-05-19 | Robert M. Haines | SVP & Chief Financial Officer | F | −10,237 | −$24.98K |
| 2015-05-19 | Philip B Smith | Director | A | +30,738 | — |
| 2015-05-19 | Roger A Fox | SVP, Operations | F | −21,554 | −$52.59K |
| 2015-05-19 | Herbert C Williamson III | Director | A | +30,738 | — |
| 2015-05-19 | Joseph A Mills | CEO and Chairman | F | −50,516 | −$123.26K |
| 2015-05-19 | William Kemper White | Director | A | +30,738 | — |
| 2015-04-24 | Lawrence J. Thuillier | VP & Corporate Controller | A | +45,098 | — |
| 2015-04-24 | Roger A Fox | SVP, Operations | A | +149,510 | — |
| 2015-04-24 | Charles C Boettcher | SVP and General Counsel | A | +161,765 | — |
| 2015-04-24 | Joseph A Mills | CEO and Chairman | A | +368,824 | — |
| 2015-04-24 | Robert M. Haines | SVP & Chief Financial Officer | A | +149,510 | — |
| 2014-12-16 | Robert M. Haines | SVP & Chief Financial Officer | A | +17,000 | — |
| 2014-12-02 | Robert D Hallett | SVP, Business Development | Sell | −7,098 | −$19.95K |
| 2014-11-17 | Robert D Hallett | SVP, Business Development | F | −2,046 | −$6.28K |
| 2014-11-17 | Robert M. Haines | VP & Chief Financial Officer | F | −1,674 | −$5.14K |
| 2014-11-17 | Lawrence J. Thuillier | VP & Corporate Controller | F | −1,535 | −$4.71K |
| 2014-11-17 | Joseph A Mills | CEO and Chairman | F | −27,897 | −$85.64K |
| 2014-11-17 | Steven G Hendrickson | Senior Vice President | F | −6,975 | −$21.41K |
| 2014-09-17 | Roger A Fox | SVP, Operations | A | +70,753 | — |
| 2014-08-28 | Joseph A Mills | CEO and Chairman | Buy | +6,000 | +$24.54K |
| 2014-08-28 | Robert M. Haines | VP & Chief Financial Officer | Buy | +5,000 | +$20.50K |
| 2014-08-19 | Lawrence J. Thuillier | VP & Corporate Controller | A | +1,770 | — |
| 2014-08-19 | Charles C Boettcher | SVP and General Counsel | A | +9,010 | — |
| 2014-08-19 | Joseph E Schimelpfening | SVP, Upstream Business | A | +6,815 | — |
| 2014-08-19 | Joseph A Mills | CEO and Chairman | A | +23,445 | — |
| 2014-08-19 | Steven G Hendrickson | SVP, Technical Evaluations | A | +6,505 | — |
| 2014-08-19 | Robert D Hallett | SVP, Business Development | A | +5,905 | — |
| 2014-08-18 | Robert D Hallett | SVP, Business Development | Sell | −55,000 | −$234.30K |
| 2014-03-06 | Robert D Hallett | SVP, Business Development | Sell | −6,000 | −$29.10K |
| 2013-11-19 | Joseph E Schimelpfening | SVP, Upstream Business | F | −11,978 | −$65.28K |
| 2013-11-19 | Robert D Hallett | SVP, Business Development | F | −5,706 | −$31.10K |
| 2013-11-19 | Joseph A Mills | CEO and Chairman | F | −43,909 | −$239.30K |
| 2013-11-19 | Jeffrey D Langemeier | VP & Controller, Corp & Mids | F | −3,411 | −$18.59K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Hans Kobler | Director | 83,355,210 | — |
| Walter Thomas McAndrew Jr. | 10%+ Owner | 22,536,568 | $207.79M |
| Energy Impact Fund (FT-B) LP | 10%+ Owner | 19,350,897 | $178.42M |
| Corey Amthor | President | 5,623,308 | $51.85M |
| Robert Ian Blakely | Chief Financial Officer | 4,487,528 | $41.38M |
| Charles D Boynton | Director | 13,024 | $120.08K |
| Mark R Patterson | Director | 13,024 | $120.08K |
| Livingston Satterthwaite | Director | 13,024 | $120.08K |
| Dan Brouillette | Director | 13,024 | $120.08K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the EROC quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.