Peter John A. St., Director at Mayville Engineering Company, Inc. (MEC), bought 500 shares at $17.00 ($9K) on 2019-05-13, disclosed to the SEC on 2019-05-15.
Open-market purchase of $8k MEC by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.