Insider Trading & Ownership of Quentin S. Blackford

Location: San Francisco, CA
Summary: The estimated net worth of Quentin S. Blackford is at least $36,012,432 dollars as of 03 Mar 2026. Quentin S. Blackford is the President and CEO, Director of iRhythm Holdings, Inc. and owns shares of iRhythm Holdings, Inc. (IRTC) stock worth about $26.22M. Quentin S. Blackford is the Director of Alphatec Holdings, Inc. and owns shares of Alphatec Holdings, Inc. (ATEC) stock worth about $7.2M. Quentin S. Blackford is the Chief Operating Officer of DEXCOM INC and owns shares of DEXCOM INC (DXCM) stock worth about $2.38M. Quentin S. Blackford is the Director of Axogen, Inc. and owns shares of Axogen, Inc. (AXGN) stock worth about $205K.
Signature: /s/ Marc Rosenbaum, attorney-in-fact
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Quick Takeaways

Quentin S. Blackford has 5 issuer positions tracked on this page.
Estimated disclosed ownership value: $36,012,432.
Recent insider filing activity is available below.

What Changed

Largest disclosed position: iRhythm Holdings, Inc. ($26,222,505).
Past-year value change for that position: -$12,620,871.

Why This Matters

This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
You can cross-check role, issuer, and filing chronology directly against the SEC source.