Adaptive Biotechnologies (ADPT) CCO Susan Bobulsky Sells Shares

What Happened
Susan Bobulsky, Chief Commercial Officer of Adaptive Biotechnologies (ADPT), sold 3,000 shares on August 10, 2026 at $25.00 per share, generating $75,000 in proceeds. The filing reports the shares were disposed in an open-market sale and is recorded on Form 4.

Key Details

• Transaction date: 2026-08-10; Price: $25.00 per share; Total proceeds: $75,000.
• Report filed: Form 4 dated 2026-08-12 (timely filing within the required 2-business-day window).
• Shares owned after transaction: not specified in the provided excerpt of the filing.
• Footnote: Sale was executed pursuant to a Rule 10b5-1 trading plan adopted by Ms. Bobulsky on December 16, 2025.
• Transaction code: S (Sale); method noted as open market/private sale.

Context
A 10b5-1 plan indicates the trades were pre-planned and executed under an established schedule or rules, which is common for routine insider selling and reduces the implication that the sale reflects new, company-specific information. Sales are generally less informative than purchases about insider sentiment; this appears to be a routine disposition under a pre-established plan.