CMRX
Chimerix Inc
NASDAQ: CMRX · HEALTHCARE · BIOTECHNOLOGY
$8.54
+0.00% today
Updated 2026-10-28
Market cap
$801.08M
P/E ratio
—
P/S ratio
3,778.70x
EPS (TTM)
$-0.99
Dividend yield
—
52W range
$0 – $0
Volume
1.4M
Chimerix Inc (CMRX) Insider transactions
Net insider activity
Net selling (18,744,741 shares)
Buy transactions
0
Sell transactions
100
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-04-21 | VAKIENER, VICTORIA | Director | Sale | 60,000 | — | — |
| 2025-04-21 | VAKIENER, VICTORIA | Director | Sale | 50,000 | — | — |
| 2025-04-21 | VAKIENER, VICTORIA | Director | Sale | 35,000 | — | — |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 1,150,000 | — | — |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 875,000 | — | — |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 700,000 | — | — |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 632,500 | — | — |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 557,050 | — | — |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 60,000 | — | — |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 233,413 | $8.55 | $2.00M |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 102,995 | $8.55 | $880607.25 |
| 2025-04-21 | SHERMAN, MICHAEL A. | Director, Chief Executive Officer | Sale | 87,000 | $8.55 | $743850.00 |
| 2025-04-21 | RIGA, THOMAS J | COO and CCO | Sale | 800,000 | — | — |
| 2025-04-21 | RIGA, THOMAS J | COO and CCO | Sale | 325,000 | — | — |
| 2025-04-21 | RIGA, THOMAS J | COO and CCO | Sale | 60,828 | $8.55 | $520079.40 |
| 2025-04-21 | MULTANI, PRATIK S | Director | Sale | 60,000 | — | — |
| 2025-04-21 | MULTANI, PRATIK S | Director | Sale | 50,000 | — | — |
| 2025-04-21 | MULTANI, PRATIK S | Director | Sale | 35,000 | — | — |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 60,000 | — | — |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 50,000 | — | — |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 42,000 | — | — |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 35,000 | — | — |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 21,000 | — | — |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 2,776,093 | $8.55 | $23.74M |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 531,861 | $8.55 | $4.55M |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 207,523 | $8.55 | $1.77M |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 60,000 | $8.55 | $513000.00 |
| 2025-04-21 | MIDDLETON, FRED A | Director | Sale | 40,000 | $8.55 | $342000.00 |
| 2025-04-21 | MEYER, ROBERT J. | Director | Sale | 60,000 | — | — |
| 2025-04-21 | MEYER, ROBERT J. | Director | Sale | 50,000 | — | — |
| 2025-04-21 | MEYER, ROBERT J. | Director | Sale | 42,000 | — | — |
| 2025-04-21 | MEYER, ROBERT J. | Director | Sale | 35,000 | — | — |
| 2025-04-21 | MEYER, ROBERT J. | Director | Sale | 21,000 | — | — |
| 2025-04-21 | MEYER, ROBERT J. | Director | Sale | 35,150 | $8.55 | $300532.50 |
| 2025-04-21 | MELEMED, ALLEN S. | CHIEF MEDICAL OFFICER | Sale | 400,000 | — | — |
| 2025-04-21 | MELEMED, ALLEN S. | CHIEF MEDICAL OFFICER | Sale | 275,000 | — | — |
| 2025-04-21 | MELEMED, ALLEN S. | CHIEF MEDICAL OFFICER | Sale | 240,000 | — | — |
| 2025-04-21 | MELEMED, ALLEN S. | CHIEF MEDICAL OFFICER | Sale | 190,000 | — | — |
| 2025-04-21 | MELEMED, ALLEN S. | CHIEF MEDICAL OFFICER | Sale | 168,750 | — | — |
| 2025-04-21 | MELEMED, ALLEN S. | CHIEF MEDICAL OFFICER | Sale | 154,260 | — | — |
| 2025-04-21 | MELEMED, ALLEN S. | CHIEF MEDICAL OFFICER | Sale | 173,852 | $8.55 | $1.49M |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 250,000 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 150,000 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 95,000 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 90,000 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 64,275 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 62,067 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 48,438 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 18,700 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 17,000 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 15,000 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 13,000 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 8,098 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 1,500 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 1,250 | — | — |
| 2025-04-21 | LASPALUTO, MICHELLE | CHIEF FINANCIAL OFFICER | Sale | 181,541 | $8.55 | $1.55M |
| 2025-04-21 | KOZIN, MARC D | Director | Sale | 100,000 | — | — |
| 2025-04-21 | KOZIN, MARC D | Director | Sale | 60,000 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 65,000 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 64,500 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 30,000 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 29,900 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 28,320 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 24,950 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 18,000 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 10,150 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 10,000 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 9,360 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 7,200 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 1,500 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 1,250 | — | — |
| 2025-04-21 | JAKEMAN, DAVID | VP OF FINANCE AND ACCOUNTING | Sale | 156,209 | $8.55 | $1.34M |
| 2025-04-21 | DEMSKI, MARTHA J | Director | Sale | 60,000 | — | — |
| 2025-04-21 | DEMSKI, MARTHA J | Director | Sale | 50,000 | — | — |
| 2025-04-21 | DEMSKI, MARTHA J | Director | Sale | 35,000 | — | — |
| 2025-04-21 | DEMSKI, MARTHA J | Director | Sale | 21,000 | — | — |
| 2025-04-21 | DEMSKI, MARTHA J | Director | Sale | 9,000 | — | — |
| 2025-04-21 | DEMSKI, MARTHA J | Director | Sale | 72,055 | $8.55 | $616070.25 |
| 2025-04-21 | DECKER, LISA LYNN | Director | Sale | 100,000 | — | — |
| 2025-04-21 | DECKER, LISA LYNN | Director | Sale | 60,000 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 900,000 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 502,500 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 450,000 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 300,000 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 250,000 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 192,825 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 192,500 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 150,000 | — | — |
| 2025-04-21 | ANDRIOLE, MICHAEL T. | Director, PRESIDENT AND CEO | Sale | 630,828 | $8.55 | $5.39M |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 250,000 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 200,000 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 178,000 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 176,000 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 170,000 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 165,000 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 135,000 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 131,250 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 128,550 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 45,750 | — | — |
| 2025-04-21 | ALRUTZ, MICHAEL ALBERT | SVP AND GENERAL COUNSEL | Sale | 15,000 | — | — |
Frequently asked questions
Are CMRX insiders buying or selling?
Over the transactions on record, CMRX insiders have been net sellers, with about $45.74M in stock sold across 100 sales. The entries tagged as buys are stock grants and option exercises recorded at $0, not open-market purchases.
Does insider selling at CMRX mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which CMRX insiders are selling the most?
Recent selling is concentrated in a few names. MIDDLETON, FRED A accounts for the largest share on record, with about $30.91M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.