CHIMERIX INC (CMRX) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2025-04-21

CHIMERIX INC (CMRX) — no SEC Form 4 insider filings recorded in the last 90 days. InsiderAlpha tracks every CMRX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About CHIMERIX INC (CMRX)

SEC CIK	0001117480

Recent CMRX Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2025-04-21	Riga Thomas J	COO and CCO	D — Derivative transaction	60.8K	$8.55	$520K	SEC
2025-04-21	Meyer Robert J.	Insider	D — Derivative transaction	35.1K	$8.55	$301K	SEC
2025-04-21	Melemed Allen S.	CHIEF MEDICAL OFFICER	D — Derivative transaction	173.9K	$8.55	$1.49M	SEC
2025-04-21	Jakeman David	VP OF FINANCE AND ACCOUNTING	D — Derivative transaction	156.2K	$8.55	$1.34M	SEC
2025-04-21	Alrutz Michael Albert	SVP AND GENERAL COUNSEL	D — Derivative transaction	216.7K	$8.55	$1.85M	SEC
2025-04-21	MIDDLETON FRED A	Insider	D — Derivative transaction	40.0K	$8.55	$342K	SEC
2025-04-21	MIDDLETON FRED A	Insider	D — Derivative transaction	60.0K	$8.55	$513K	SEC
2025-04-21	MIDDLETON FRED A	Insider	D — Derivative transaction	2.78M	$8.55	$23.74M	SEC
2025-04-21	MIDDLETON FRED A	Insider	D — Derivative transaction	531.9K	$8.55	$4.55M	SEC
2025-04-21	MIDDLETON FRED A	Insider	D — Derivative transaction	207.5K	$8.55	$1.77M	SEC
2025-04-21	Sherman Michael A.	Chief Executive Officer	D — Derivative transaction	87.0K	$8.55	$744K	SEC
2025-04-21	Sherman Michael A.	Chief Executive Officer	D — Derivative transaction	103.0K	$8.55	$881K	SEC
2025-04-21	Sherman Michael A.	Chief Executive Officer	D — Derivative transaction	233.4K	$8.55	$2.00M	SEC
2025-04-21	DEMSKI MARTHA J	Insider	D — Derivative transaction	72.1K	$8.55	$616K	SEC
2025-04-21	LaSpaluto Michelle	CHIEF FINANCIAL OFFICER	D — Derivative transaction	181.5K	$8.55	$1.55M	SEC

All transactions sourced from SEC EDGAR Form 4 filings for CHIMERIX INC (CMRX). Updated in real time as new filings are submitted to the SEC.

Recent Insider Filings

2025-04-21 — KOZIN MARC D (Insider)
2025-04-21 — Meyer Robert J. (Insider)
2025-04-21 — Melemed Allen S. (CHIEF MEDICAL OFFICER)
2025-04-21 — Decker Lisa Lynn (Insider)
2025-04-21 — Riga Thomas J (COO and CCO)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in CMRX insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

CMRX Insider Trading — FAQ

What is the latest insider trade for CMRX?: CHIMERIX INC (CMRX) had 0 insider filings in the last 90 days, with the most recent on 2025-04-21. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying CMRX stock?: 0 insider purchases of CMRX were filed in the last 90 days.
How many insiders are selling CMRX stock?: 0 insider sales of CMRX were filed in the last 90 days.
Where can I see CMRX SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every CMRX SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live CMRX dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.