Sean P. Leuba, SVP of Corporate Development and General Counsel at Mayville Engineering Company, Inc. ($MEC), made one open market purchase of MEC stock in the last year, totaling $6,780, with the most recent on August 11, 2025. This ranks 4,481st out of 4,983 insiders, far below the average of 1.5 million per buyer across 3.3 transactions. As GC and Secretary, he sold MEC shares twice on the open market, for $176,164 total, most recently on March 5, 2026. This ranks 8,702nd out of 11,678 insiders, well under the average of 8.6 million per seller across 6.4 transactions.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 15, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Common Stock | 4646 | $0.00 | 23,750.0000 | 20,471,356 | 24.32% | 0.02% |
| March 15, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | F | Common Stock | 5277 | $16.67 | 18,473.0000 | 20,471,356 | 22.22% | 0.03% |
| March 15, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Common Stock | 7263 | $0.00 | 19,104.0000 | 20,471,356 | 61.34% | 0.04% |
| March 15, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | A | Restricted Stock Units | 13498 | $0.00 | 13,498.0000 | 20,471,356 | 9999.99% | 0.07% |
| March 15, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Restricted Stock Units | 4646 | $0.00 | 9,292.0000 | 20,471,356 | 33.33% | 0.02% |
| March 15, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Restricted Stock Units | 7263 | $0.00 | 7,263.0000 | 20,471,356 | 50.00% | 0.04% |
| March 5, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | GC & Secretary | S | Common Stock | 6698 | $18.81 | 11,841.0000 | 20,471,356 | 36.13% | 0.03% |
| March 5, 2026 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | GC & Secretary | S | Common Stock | 2500 | $20.07 | 11,841.0000 | 20,471,356 | 17.43% | 0.01% |
| Aug. 11, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | P | Common Stock | 500 | $13.56 | 21,039.0000 | 20,699,151 | 2.43% | 0.00% |
| March 15, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | F | Common Stock | 3217 | $14.35 | 20,539.0000 | 20,972,192 | 13.54% | 0.02% |
| March 15, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | A | Restricted Stock Units | 13938 | $0.00 | 13,938.0000 | 20,972,192 | 9999.99% | 0.07% |
| March 15, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Restricted Stock Units | 7264 | $0.00 | 14,526.0000 | 20,972,192 | 33.34% | 0.03% |
| March 15, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Common Stock | 7264 | $0.00 | 23,756.0000 | 20,972,192 | 44.05% | 0.03% |
| March 6, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | P | Common Stock | 1000 | $14.18 | 16,492.0000 | 20,972,192 | 6.45% | 0.00% |
| Feb. 28, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Restricted Stock Units | 6165 | $0.00 | 21,790.0000 | 20,972,192 | 22.05% | 0.03% |
| Feb. 28, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | F | Common Stock | 2731 | $14.95 | 15,492.0000 | 20,972,192 | 14.99% | 0.01% |
| Feb. 28, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Common Stock | 6165 | $0.00 | 18,223.0000 | 20,972,192 | 51.13% | 0.03% |
| Jan. 9, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Common Stock | 5783 | $0.00 | 14,926.0000 | 20,972,192 | 63.25% | 0.03% |
| Jan. 9, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | F | Common Stock | 2868 | $15.00 | 12,058.0000 | 20,972,192 | 19.21% | 0.01% |
| Jan. 9, 2025 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Restricted Stock Units | 5783 | $0.00 | 27,955.0000 | 20,972,192 | 17.14% | 0.03% |
| Nov. 7, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | P | Common Stock | 1000 | $16.13 | 9,143.0000 | 21,123,494 | 12.28% | 0.00% |
| March 15, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | A | Restricted Stock Units | 21790 | $0.00 | 33,738.0000 | 20,698,970 | 182.37% | 0.11% |
| Feb. 28, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | F | Common Stock | 1806 | $11.97 | 8,143.0000 | 20,698,970 | 18.15% | 0.01% |
| Feb. 28, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Restricted Stock Units | 6166 | $0.00 | 11,948.0000 | 20,698,970 | 34.04% | 0.03% |
| Feb. 28, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Common Stock | 6166 | $0.00 | 9,949.0000 | 20,698,970 | 162.99% | 0.03% |
| Jan. 9, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | F | Common Stock | 2000 | $13.50 | 3,783.0000 | 20,698,970 | 34.58% | 0.01% |
| Jan. 9, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Common Stock | 5783 | $0.00 | 5,783.0000 | 20,698,970 | 9999.99% | 0.03% |
| Jan. 9, 2024 | Mayville Engineering Company, Inc. | $MEC | Leuba Sean P | SVP, Corp. Development & GC | M | Restricted Stock Units | 5783 | $0.00 | 18,114.0000 | 20,698,970 | 24.20% | 0.03% |