Busky Joseph M. 4

What Happened

• Joseph M. Busky, Chief Financial Officer of QuidelOrtho Corporation, had 8,425 restricted stock units (RSUs) vest on January 29, 2026. Those RSUs converted into 8,425 common shares (exercise/conversion of a derivative, code M). To satisfy tax withholding, 2,602 of those shares were surrendered to the company (disposition, code F) at a per-share value of $27.41, equal to approximately $71,321. The net result: Busky received newly issued shares from vested RSUs while a portion was withheld for taxes.

Key Details

• Transaction date: January 29, 2026; Form filed February 2, 2026 (covers the Jan 29 vesting/conversion).
• Grant/Acquisition: 8,425 shares issued upon RSU release (code A / conversion M) at $0 exercise price (RSUs convert to shares).
• Tax withholding: 2,602 shares withheld/disposed to satisfy tax obligations at $27.41 per share, total ~ $71,321 (code F).
• Footnotes: RSUs were previously reported; each RSU equals one common share. Vesting schedule noted: 8,425 shares vested on 1/29/2026, another 8,425 will vest on 1/29/2027, and 8,426 on 1/29/2028.
• Shares owned following the reported transaction: Not specified in the filing.

Context

• This was not an open-market sale or purchase for investment reasons: the disposition of 2,602 shares was a routine tax-withholding action related to RSU vesting (common practice when equity awards vest). The conversion had no exercise price because RSUs convert to shares rather than requiring cash payment.