SMC · Insider Trading
Summit Midstream Corporation
Every open-market purchase and sale reported by SMC 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 |
|---|---|---|---|---|---|
| 2026-10-02 | James David Johnston | Executive VP, GC, CCO and Secy | Sell | −2,600 | −$79.33K |
| 2026-07-06 | James David Johnston | Executive VP, GC, CCO and Secy | Sell | −2,600 | −$77.27K |
| 2026-05-21 | Jerry L Peters | Director | Sell | −10,000 | −$320.00K |
| 2026-04-21 | Jerry L Peters | Director | G | — | — |
| 2026-04-13 | Tailwater Capital LLC | 10%+ Owner | Buy | +6,104,590 | +$189.73M |
| 2026-03-18 | Carolyn J Stone | Director | A | +3,733 | — |
| 2026-03-18 | Robert Joseph McNally | Director | A | +3,733 | — |
| 2026-03-18 | James J Cleary | Director | A | +3,733 | — |
| 2026-03-18 | James Lee Jacobe | Director | A | +3,733 | — |
| 2026-03-18 | Rommel Oates | Director | A | +3,733 | — |
| 2026-03-18 | Jerry L Peters | Director | A | +3,733 | — |
| 2026-03-17 | J Heath Deneke | Chairman, President and CEO | MIXED | +63,642 | −$1.22M |
| 2026-03-17 | James David Johnston | Executive VP, GC, CCO and Secy | MIXED | +20,270 | −$398.40K |
| 2026-03-17 | William J. Mault | Executive VP and CFO | MIXED | +18,106 | −$355.94K |
| 2026-03-17 | Matthew B. Sicinski | Senior VP and CAO | MIXED | +8,158 | −$80.75K |
| 2026-01-21 | William J. Mault | Executive VP and CFO | MIXED | +7,364 | −$73.92K |
| 2026-01-21 | James David Johnston | Executive VP, GC, CCO and Secy | MIXED | +7,871 | −$78.37K |
| 2026-01-21 | J Heath Deneke | Chairman, President and CEO | MIXED | +24,538 | −$220.27K |
| 2026-01-21 | Matthew B. Sicinski | Senior VP and CAO | MIXED | +2,527 | −$28.58K |
| 2025-09-02 | Jason H Downie | Director | Buy | +131,595 | +$2.75M |
| 2025-08-28 | Edward Herring | Director | Buy | +600,800 | +$12.30M |
| 2025-04-28 | Jerry L Peters | Director | G | −3,062 | — |
| 2025-04-28 | Jerry L Peters | Director | MIXED | −241 | −$129.21K |
| 2025-04-28 | Jerry L Peters | Director | Sell | −6,752 | −$252.56K |
| 2025-03-28 | J Heath Deneke | Chairman, President and CEO | Sell | −2,000 | −$70.00K |
| 2025-03-26 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$107.39K |
| 2025-03-21 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$111.71K |
| 2025-03-20 | Jerry L Peters | Director | Sell | −6,752 | −$252.56K |
| 2025-03-18 | Jerry L Peters | Director | MIXED | −241 | −$129.21K |
| 2025-03-18 | James J Cleary | Director | A | +3,062 | — |
| 2025-03-18 | Rommel M. Oates | Director | A | +3,062 | — |
| 2025-03-18 | Robert Joseph McNally | Director | A | +3,062 | — |
| 2025-03-18 | William J. Mault | Executive VP and CFO | MIXED | +15,468 | −$233.10K |
| 2025-03-18 | James Lee Jacobe | Director | A | +3,062 | — |
| 2025-03-18 | James David Johnston | Executive VP, GC, CCO and Secy | MIXED | +13,631 | −$214.31K |
| 2025-03-18 | Marguerite Woung-Chapman | Director | A | +3,062 | — |
| 2025-03-18 | J Heath Deneke | Chairman, President and CEO | MIXED | +42,844 | −$1.17M |
| 2025-03-18 | Matthew B. Sicinski | Senior VP and CAO | MIXED | +5,635 | −$68.03K |
| 2025-03-14 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$112.63K |
| 2025-03-11 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$115.62K |
| 2025-03-06 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$121.62K |
| 2025-03-03 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$130.22K |
| 2025-02-26 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$126.30K |
| 2025-02-21 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$133.52K |
| 2025-02-18 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$133.55K |
| 2025-02-12 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$131.07K |
| 2025-02-07 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$128.65K |
| 2025-02-04 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$124.86K |
| 2025-01-30 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$122.18K |
| 2025-01-27 | J Heath Deneke | Chairman, President and CEO | Sell | −3,000 | −$126.02K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Tailwater Capital LLC | 10%+ Owner | 1,367,397 | $41.90M |
| J Heath Deneke | Chairman, President and CEO | 348,757 | $10.69M |
| Jason H Downie | Director | 146,479 | $4.49M |
| William J. Mault | Executive VP and CFO | 83,514 | $2.56M |
| Edward Herring | Director | 72,759 | $2.23M |
| James David Johnston | Executive VP, GC, CCO and Secy | 72,757 | $2.23M |
| James Lee Jacobe | Director | 45,686 | $1.40M |
| Matthew B. Sicinski | Senior VP and CAO | 37,472 | $1.15M |
| James J Cleary | Director | 37,004 | $1.13M |
| Robert Joseph McNally | Director | 37,004 | $1.13M |
| Marguerite Woung-Chapman | Director | 33,271 | $1.02M |
| Rommel Oates | Director | 26,170 | $801.85K |
| Rommel M. Oates | Director | 22,437 | $687.47K |
| Jerry L Peters | Director | 16,979 | $520.24K |
| Carolyn J Stone | Director | 3,733 | $114.38K |
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 SMC 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.