Martin Midstream Partners L.P.
Martin Midstream Partners L.P. (MMLP) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MMLP · as of Sep 30, 2025
Ownership Breakdown
41
Institutional Holders
▲ 3 vs Q2
$53.15M
Total Inst. Value
▲ $3.50M vs Q2
39.12M
Shares Outstanding
freeFloat 65.88%
17.36M
13F Shares Held
▲ 532,815 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MMLP largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
INVESCO LTD. wholesale-petroleum bulk stations & terminals | 7.21M | 18.55% | 18.55% | $22.07B | Nov 13, 2025 | — held |
NOMURA HOLDINGS INC wholesale-petroleum bulk stations & terminals | 3.56M | 9.17% | 9.17% | $10.91B | Nov 14, 2025 | ▼ 272.7K |
BARCLAYS PLC wholesale-petroleum bulk stations & terminals | 1.50M | 3.86% | 3.86% | $4.59B | Mar 31, 2026 | — held |
BLACKSTONE INC. wholesale-petroleum bulk stations & terminals | 982.5K | 2.53% | 2.53% | $3.01B | Nov 14, 2025 | ▼ 3.5K |
MORGAN STANLEY wholesale-petroleum bulk stations & terminals | 814.4K | 2.09% | 2.09% | $2.49B | May 27, 2026 | ▲ 61.8K |
JPMORGAN CHASE & CO wholesale-petroleum bulk stations & terminals | 643.5K | 1.65% | 1.65% | $1.97B | Nov 26, 2025 | ▼ 15.5K |
KIM, LLC wholesale-petroleum bulk stations & terminals | 506.4K | 1.30% | 1.30% | $1.55B | Nov 12, 2025 | NEW |
BANK OF AMERICA CORP /DE/ wholesale-petroleum bulk stations & terminals | 498.1K | 1.28% | 1.28% | $1.52B | Feb 3, 2026 | ▼ 83.0K |
NEXPOINT ASSET MANAGEMENT, L.P. wholesale-petroleum bulk stations & terminals | 408.2K | 1.05% | 1.05% | $1.25B | Nov 14, 2025 | — held |
DE LISLE PARTNERS LLP wholesale-petroleum bulk stations & terminals | 335.4K | 86.25% | 86.25% | $1.05B | Nov 13, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
10
Increased
+169.5K shares7
New Positions
first time holders9
Decreased
−403.1K shares4
Sold Out
fully exitedNet shares change (top 50)
233.6K
+169.5K / −403.1K
Net new holders
+4
7 new / 4 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MMLP insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
3
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
COLLINGSWORTH JAMES M director | Feb 17, 2026 | Award | 23,200 | $2.80 | $65.0K | 172.7K | Form 4 ↗ |
MASSEY C SCOTT director | Feb 17, 2026 | Award | 23,200 | $2.80 | $65.0K | 191.7K | Form 4 ↗ |
KELLEY BYRON R director | Feb 17, 2026 | Award | 23,200 | $2.80 | $65.0K | 175.3K | Form 4 ↗ |
Martin Product Sales LLC 10 percent owner | Dec 12, 2025 | Purchase | 7,012 | $2.59 | $18.2K | 2.78M | Form 4 ↗ |
Martin Product Sales LLC 10 percent owner | Dec 11, 2025 | Purchase | 5,573 | $2.55 | $14.2K | 2.77M | Form 4 ↗ |
Martin Product Sales LLC 10 percent owner | Dec 8, 2025 | Purchase | 12,228 | $2.59 | $31.7K | 2.77M | Form 4 ↗ |
Martin Product Sales LLC 10 percent owner | Dec 4, 2025 | Purchase | 2,190 | $2.60 | $5.7K | 2.76M | Form 4 ↗ |
Martin Product Sales LLC 10 percent owner | Dec 1, 2025 | Purchase | 2,239 | $2.59 | $5.8K | 2.75M | Form 4 ↗ |
Martin Product Sales LLC 10 percent owner | Nov 25, 2025 | Purchase | 15,040 | $2.59 | $39.0K | 2.75M | Form 4 ↗ |
Martin Product Sales LLC 10 percent owner | Nov 17, 2025 | Purchase | 1,945 | $2.60 | $5.1K | 2.74M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Martin Midstream Partners L.P. (MMLP) is primarily owned by institutional investors, who hold approximately 44.4% of total shares outstanding. Company insiders own approximately 34.12%, while retail and public investors account for the remaining 21.51%.
The largest institutional shareholder of Martin Midstream Partners L.P. is INVESCO LTD., holding approximately 7.21 million shares — equal to 18.55% of outstanding shares — as of September 30, 2025.
A total of 41 institutional investors currently hold MMLP stock, with a combined institutional value of approximately $53,145,432 as of the most recent 13F filing period.
Frequently asked questions
MMLP ownershipMartin Midstream Partners L.P. (MMLP) is primarily owned by institutional investors, who hold approximately 44.4% of shares. The largest shareholder is INVESCO LTD. with a 18.55% stake. Company insiders hold 34.12%. Data sourced from SEC Form 13F as of September 30, 2025.