Harrison Robert Gardner 4

What Happened
Harrison Robert Gardner, Chief Information Officer of Sera Prognostics, sold 2,000 shares of SERA stock in an open-market transaction on January 27, 2026. The weighted average sale price was $2.97 per share, generating proceeds of approximately $5,940. This was a sale (not a purchase), which for disclosure purposes is typically considered routine insider selling rather than a direct bullish signal.

Key Details

• Transaction date: January 27, 2026
• Transaction type/code: Open-market sale (S) of 2,000 shares
• Price: Weighted average $2.97; individual trade prices ranged $2.92 to $3.06 (sold in multiple trades)
• Proceeds: Approximately $5,940
• Footnotes: Transaction executed pursuant to a Rule 10b5-1 trading plan adopted May 21, 2025; filer notes the weighted average and will provide per-trade prices on request (per footnote)
• Shares owned after transaction: Not specified in the information provided on this Form 4
• Timeliness: Form 4 filed for the reporting period dated Jan 27, 2026 (no late-file indication)

Context
This was a routine open-market sale executed under a pre-established 10b5-1 plan, which allows insiders to sell shares according to a preset schedule and reduces concerns about trading on nonpublic information. Sales disclose liquidity or portfolio actions by insiders but do not necessarily indicate a change in outlook on the company.