James David Johnston - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
James David Johnston has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $801K.
Profile
James David Johnston holds the role of Executive VP, GC, CCO and Secy at Summit Midstream Corp (SMC). Johnston has reported 4 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Executive VP, GC, CCO and Secy |
|---|---|
| Notability | 28/100 |
Board memberships
- Summit Midstream Corp
Reported roles
- Executive VP, GC, CCO and Secy
Trading Pattern
InsiderAlpha's records for James David Johnston go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. 2 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role James David Johnston has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Executive VP, GC, CCO and Secy at Summit Midstream Corp (SMC) - 4 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-07 | SMC | Summit Midstream Corp | S - Open-market sale [10b5-1] | 2.6K | $29.72 | $77K |
| 2026-03-17 | SMC | Summit Midstream Corp | F - Tax withholding / forfeiture | 3.9K | $30.29 | $117K |
| 2026-03-17 | SMC | Summit Midstream Corp | M - Option exercise | 9.8K | - | |
| 2026-03-17 | SMC | Summit Midstream Corp | F - Tax withholding / forfeiture | 1.8K | $30.29 | $55K |
| 2026-03-17 | SMC | Summit Midstream Corp | M - Option exercise | 4.7K | - | |
| 2026-03-17 | SMC | Summit Midstream Corp | F - Tax withholding / forfeiture | 7.5K | $30.29 | $226K |
| 2026-03-17 | SMC | Summit Midstream Corp | M - Option exercise | 19.0K | - | |
| 2026-01-21 | SMC | Summit Midstream Corp | F - Tax withholding / forfeiture | 2.9K | $26.81 | $78K |
| 2026-01-21 | SMC | Summit Midstream Corp | M - Option exercise | 10.8K | - | |
| 2024-12-13 | SMC | Summit Midstream Corp | S - Open-market sale [10b5-1] | 20.0K | $36.20 | $724K |
Companies - Last 90 Days
- Summit Midstream Corp (SMC) - 1 filing, last 2026-07-07
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies James David Johnston has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Connect Midstream, LLC - $40.96M of SMC open-market activity in the last 12 months
- Jerry L. Peters - $320K of SMC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- JANA Partners Management, LP
- Arun Jeldi
- Jan Philipp Jenisch
- Marc Johnson
- James Jones
- Andrew T. Kaplan
- A. J. Kazimi
- Michael John Kazley
Frequently Asked Questions
Who is James David Johnston?
James David Johnston holds the role of Executive VP, GC, CCO and Secy at Summit Midstream Corp (SMC). Johnston has reported 4 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has James David Johnston submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has James David Johnston been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($801K) across all tracked filings.
Where can I see all of James David Johnston's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live James David Johnston profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.