Medpace Holdings Founder August J. Troendle Reports Multi-Week Open Market Stock Sales

Executive Summary

On September 28, 2026, August J. Troendle filed Amendment No. 24 to Schedule 13D with the SEC concerning his holdings in Medpace Holdings, Inc. ($MEDP). The amendment reports a substantial series of open-market sales executed between August 10, 2026, and September 25, 2026, at prices ranging generally between $600.00 and $637.48 per share.

Following these dispositions, Mr. Troendle beneficially owns 5,396,508 shares, representing 19.1% of the outstanding common stock. This includes 4,733,019 shares (16.8%) held indirectly through Medpace Investors, LLC, where Mr. Troendle serves as the Sole Manager.

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Transaction Breakdown & Patterns

• Execution Period: August 10, 2026 – September 25, 2026
• Order Type: Open market limit orders
• Pricing Band: $600.00 to $637.48 per share
• Active Trading Dates:
  • August 10–13, 2026: Sales ranged from $600.00 to $608.19.
  • August 19–21, 2026: Dispositions accelerated across $601.29 to $628.69.
  • August 24–27, 2026: Slower pacing between $620.00 and $621.28.
  • September 15–17, 2026: High-volume sales between $620.00 and $623.90.
  • September 21–24, 2026: Peak daily volumes, including over 48,000 shares sold on September 22 alone across $620.00 to $632.82, followed by transactions topping out at $637.48 on September 23.

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Ownership Structure Post-Filing

Reporting Person	Direct Voting / Dispositive	Shared Voting / Dispositive	Aggregate Owned	% of Class
August J. Troendle	389,302	4,733,019	5,396,508	19.1%
Medpace Investors, LLC	0	4,733,019	4,733,019	16.8%

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Market & Trading Significance

• Significance Level: High
• While pre-planned limit-order selling by founders is a standard liquidity and diversification practice, multi-day open-market distributions of this magnitude represent meaningful supply absorbed by the market over August and September 2026.
• Mr. Troendle retains a commanding 19.1% stake in Medpace Holdings, Inc., maintaining his position as the company's predominant individual shareholder.