Boss Michael E. 4

What Happened

• Michael E. Boss, Co-Regional Market Director at Alexandria Real Estate Equities (ARE), had 797 shares withheld by the issuer to satisfy tax withholding on the vesting of restricted stock. The shares were valued at $48.41 each, for a total of $38,583.
• This is a tax-withholding disposition tied to an award vesting (not an open-market sale or new purchase), so it does not reflect an independent decision to sell shares for cash.

Key Details

• Transaction date: 2026-03-13; Filing date: 2026-03-17 (filed within required 2 business days).
• Price per share: $48.41; Shares withheld/disposed: 797; Total value: $38,583.
• Transaction code/footnote: F / F1 — shares withheld by the issuer to satisfy a tax obligation upon vesting of restricted stock.
• Shares owned after transaction: not reported in the excerpt of this Form 4.

Context

• This is a routine net-share settlement to cover taxes on vested RSUs (cashless withholding), not a market sale indicating sentiment. Such transactions are common when restricted stock vests and do not by themselves signal insider confidence or concern.