Brown Michael Jon 4

What Happened

• Michael Jon Brown, EVP and Chief Legal Officer of Dexcom (DXCM), sold 1,700 shares in an open-market transaction on March 16, 2026 at $64.85 per share, generating $110,245 in proceeds. This was a sale (not a purchase) and was executed pursuant to a pre-established 10b5-1 trading plan.

Key Details

• Transaction date and price: March 16, 2026 — 1,700 shares sold at $64.85 each.
• Total proceeds: $110,245.
• Shares owned after transaction: The filing does not state a total post-sale beneficial ownership number; it does note 77,603 unvested restricted stock units included in reported holdings (see breakdown below).
• Unvested RSU breakdown (from filing): 77,603 unvested RSUs total — 39,019 granted 3/8/2026 vest through 3/8/2029; 19,948 granted 3/8/2025 vest through 3/8/2028; 11,399 granted 3/8/2025 vest through 3/8/2027; 7,237 granted 3/8/2024 vest through 3/8/2027.
• Footnote: Mr. Brown adopted the 10b5-1 plan on November 26, 2025; the reported sale was made pursuant to that plan.
• Filing timeliness: Transaction reported on Form 4 filed March 18, 2026 for a March 16 transaction — reported within the SEC’s two-business-day Form 4 window (timely).

Context

• A 10b5-1 plan is a pre-set trading arrangement that allows insiders to sell shares on a schedule or formula; trades under such plans are often routine and do not necessarily reflect the insider’s current view of the company.
• This report documents a sale; for retail investors, purchases typically carry clearer bullish signals than routine sales executed under 10b5-1 plans.