SecBot SecBot
SC 13D/A ·Filed Sep 28, 2026

MEDP

Medpace Holdings, Inc.
NEUTRAL
Impact 4/10
Horizonweeks Processed27d 16h ago SEC0001193125-26-405684
Activist stake amendment (position change)
Actionable Insight • Neutral

The CEO's sustained selling over a six-week window at prices near $600-$637 suggests a planned diversification or liquidity event rather than a change in conviction, as his percentage ownership remained stable. Monitor for any acceleration of sales or a change in the 19.1% threshold in future filings.

DirectionNeutral
Confidencehigh
Horizonweeks
Latest settled — T+5d
MEDP ▼ -3.09% at T+5d
NEUTRAL call -3.09% · α vs SPY -5.04% · entry $622.11 → $602.90
Next anchor: T+20d due 4h ago
Latest observation: T+18 +2.21% FF3 residual α
Entry = T+0 close
Sep 28, 2026
via day close
T+1d
+0.33%
call +0.33% · α +0.54%
$624.18
settled 27d ago
T+5d
-3.09%
call -3.09% · α -5.04%
$602.90
settled 21d ago
T+20d
Pending
due 4h ago
T+60d
Pending
in 8w

Price Chart

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Executive Summary

August J. Troendle, CEO and founder of Medpace, filed Amendment No. 24 to his Schedule 13D, reporting a reduction in his beneficial ownership from 19.1% to 19.1% (unchanged percentage) via open-market sales of common stock between August 10 and September 25, 2026. The filing is a routine update reflecting insider selling activity with no change in stated purpose or demands.

Key Financial Metrics

Stake
19.1%
Investor
August J. Troendle

Key Facts

  • August J. Troendle sold shares of Medpace common stock in open-market transactions from August 10, 2026 to September 25, 2026.
  • Troendle's beneficial ownership remains at 19.1% of common stock, unchanged from the prior filing.
  • Medpace Investors, LLC (controlled by Troendle) holds 4,733,019 shares, representing 16.8% of common stock.
  • Total shares beneficially owned by Troendle: 5,396,508 shares (including Medpace Investors, LLC holdings).
  • No new demands, strategic review, or change in purpose disclosed in this amendment.

Financial Impact

Troendle sold shares across dozens of transactions at prices ranging from approximately $600 to $637 per share, with total proceeds estimated in the tens of millions of dollars based on disclosed share counts and price ranges.

insider ownershipshare count

Risk Factors

  • Continued insider selling could signal management's view that the stock is fairly valued or that near-term upside is limited.
  • No change in purpose or demands — the activist posture remains passive, reducing likelihood of near-term catalyst.

Investment Themes

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
SC 13D/A Filing (Primary)0001193125-26-405684
Document: 0001193125-26-405684-index.html0001193125-26-405684
Document: 0001193125-26-405684.txt0001193125-26-405684
18 reports for MEDP
Performance horizon
75% Hit rate @ T+1 3 of 4 directional calls Went positive at some point 3 of 4 best @ T+20▲ +11.09%Dec 4, 2025
Filters
Rows
Reports for MEDP — sortable, filterable
TypeNow
Oct 23, 2026
2d ago
Institutional Cluster
BULLISH ★ 4/10
$664.72awaiting T+1—$676.21 (+1.73%)
Oct 21, 2026
4d ago
8-K
BULLISH ★ 6/10
$653.96 $669.20▲ +2.33%▲ +2.85%$676.21 (+3.40%)
Sep 28, 2026
27d ago
SC 13D/A
NEUTRAL ★ 4/10
$622.11 $624.18▲ +0.33%▲ +0.54%$676.21 (+8.70%)
Aug 31, 2026
7w ago
Insider Cluster
NEUTRAL ★ 2/10
$583.21 $593.02▲ +1.68%▲ +1.24%$676.21 (+15.95%)
Aug 28, 2026
8w ago
Insider Cluster
NEUTRAL ★ 4/10
$593.99 $583.21▼ −1.81%▼ −1.13%$676.21 (+13.84%)
Aug 27, 2026
8w ago
Insider Cluster
NEUTRAL ★ 3/10
$600.65 $593.99▼ −1.11%▼ −0.81%$676.21 (+12.58%)
Aug 25, 2026
8w ago
Insider Cluster
BEARISH ★ 5/10
$619.05 $611.57▲ +1.21%▲ +1.86%$676.21 (−9.23%)
Aug 24, 2026
8w ago
Insider Cluster
NEUTRAL ★ 4/10
$614.06 $619.05▲ +0.81%▲ +0.79%$676.21 (+10.12%)
Aug 21, 2026
9w ago
Insider Cluster
NEUTRAL ★ 3/10
$620.03 $614.06▼ −0.96%▼ −1.28%$676.21 (+9.06%)
Aug 19, 2026
9w ago
144
NEUTRAL ★ 3/10
$608.27 $612.64▲ +0.72%▲ +1.56%$676.21 (+11.17%)
Showing 10 of 18

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Report published Sep 28, 2026