Calderaro Charles III, Chief Technical Officer of Avidity Biosciences, Inc. ($RNAM), made one open market sale of common shares in the last 365 days, totaling about $269 thousand. His most recent sale occurred on January 7, 2026. This places him 7,802nd out of 11,678 insiders in our database by sale value, well below the average of $8.6 million across about 6.4 transactions per insider. He reported no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Calderaro Charles III | Chief Technical Officer | D | Common Stock | 98547 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.07% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Calderaro Charles III | Chief Technical Officer | D | Stock Option (Right to Buy) | 80000 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.05% |
| Jan. 7, 2026 | Avidity Biosciences, Inc. | $RNAM | Calderaro Charles III | Chief Technical Officer | S | Common Stock | 3727 | $72.23 | 49,797.0000 | 150,675,742 | 6.96% | 0.00% |
| Dec. 17, 2025 | Avidity Biosciences, Inc. | $RNAM | Calderaro Charles III | Chief Technical Officer | F | Common Stock | 9726 | $71.87 | 53,524.0000 | 150,675,742 | 15.38% | 0.01% |
| Dec. 17, 2025 | Avidity Biosciences, Inc. | $RNAM | Calderaro Charles III | Chief Technical Officer | A | Common Stock | 23250 | $0.00 | 63,250.0000 | 150,675,742 | 58.13% | 0.02% |
| Jan. 6, 2025 | Avidity Biosciences, Inc. | $RNAM | Calderaro Charles III | Chief Technical Officer | A | Common Stock | 40000 | $0.00 | 40,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 6, 2025 | Avidity Biosciences, Inc. | $RNAM | Calderaro Charles III | Chief Technical Officer | A | Stock Option (Right to Buy) | 80000 | $0.00 | 80,000.0000 | 0 | 9999.99% | 0.00% |