Martin Product Sales LLC is a corporate entity that reports beneficial ownership of shares in MARTIN MIDSTREAM PARTNERS L.P. (MMLP) under U.S. securities law. It has submitted 20 SEC insider filings since 2025, most recently in December 2025.
Every role Martin Product Sales LLC 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.
MARTIN MIDSTREAM PARTNERS L.P. (MMLP)20 filingsUpdated Aug 31, 2026
Martin Product Sales LLC is 10% Owner of MARTIN MIDSTREAM PARTNERS L.P. (MMLP). 20 SEC Form 4 filings on record, most recently on 3 December 2025. Most recent open-market trade: bought $6K of MMLP on 3 December 2025. Lifetime open-market purchases: $4.36M. Historical track record: 5/5 stars across 35 tracked purchases.
Every recent SEC Form 4 transaction Martin Product Sales LLC has reported, most recent first.
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★★ (5/5) |
| Total purchases tracked | 35 |
| Purchases with forward-return data | 35 |
| 30-day win rate | 83% |
| 90-day win rate | 77% |
| Avg 5-day return | +1.92% |
| Avg 30-day return | +3.45% |
| Avg 90-day return | +5.58% |
| Best 30-day return |
InsiderAlpha's records for Martin Product Sales LLC go back to 2025: 20 primary Form 4 filings, an average of 10.0 per year. The typical open-market purchase is $125K (35 buys totaling $4.36M). The largest single buy on record is $1.85M of MMLP in 2025. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Insiders who have reported open-market trades at the same companies as Martin Product Sales LLC. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Martin Product Sales LLC is a corporate entity, tracked as 10% Owner of MARTIN MIDSTREAM PARTNERS L.P. (MMLP). InsiderAlpha holds 20 primary Form 4 filings for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
The most recent primary Form 4 on record is dated 3 December 2025, one of 20 filings going back to 2025.
Recorded transactions: 35 open-market purchases ($4.36M) and 0 open-market sales across all tracked filings.
Across 35 tracked purchases, Martin Product Sales LLC averaged +3.5% avg 30-day return with a 83% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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$MMLP MARTIN MIDSTREAM PARTNERS L.P.1.9K shares @ $2.60$5K
| +13.11% |