Granahan Investment Management Reduces Stake in Mayville Engineering

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Granahan Investment Management LLC decreased its position in shares of Mayville Engineering Company, Inc. (NYSE:MEC) by 29.9% in the 3rd quarter, according to the company's recent 13F filing with the SEC. The fund now owns 349,267 shares of the company's stock, down from 498,305 shares previously.

Why it matters

Mayville Engineering is a Wisconsin-based industrial manufacturer that specializes in engineered metal castings and precision machining services. The company operates two main business segments: iron castings and steel castings. Granahan Investment Management's reduced stake in the company could signal a shift in investor sentiment or portfolio strategy.

The details

According to the 13F filing, Granahan Investment Management sold 149,038 shares of Mayville Engineering in the third quarter. The firm now owns approximately 1.72% of the company's outstanding shares, down from 2.45% previously. Mayville Engineering's stock price has fluctuated in recent months, trading between $11.72 and $22.36 over the past 52 weeks.

• Granahan Investment Management reported the share sale in its 13F filing for the third quarter of 2025.