Chen Timothy 4

What Happened
Timothy Chen, a director of Ambiq Micro, sold a total of 70,592 shares in open-market transactions on May 27, 2026, for aggregate proceeds of approximately $5,632,525. The sales were reported in four blocks: 22,414 shares at a weighted avg $78.85 ($1,767,344), 24,248 shares at $79.72 ($1,933,051), 20,666 shares at $80.61 ($1,665,886), and 3,264 shares at $81.57 ($266,244). These are outright sales (transaction code S), which are generally treated as routine disposals rather than affirmative bullish signals.

Key Details

• Transaction date: May 27, 2026; Form filed May 29, 2026 (file appears timely, filed within two business days).
• Total shares sold: 70,592; total proceeds: ≈ $5.63 million.
• Reported weighted-average prices and noted ranges (per filing footnotes):
  • 22,414 shares — weighted avg $78.85 (sales ranged $78.29–$79.26).
  • 24,248 shares — weighted avg $79.72 (sales ranged $79.30–$80.28).
  • 20,666 shares — weighted avg $80.61 (sales ranged $80.30–$81.27).
  • 3,264 shares — weighted avg $81.57 (sales ranged $81.325–$81.755).
• Reporting note: The filer says they will provide, on request, the breakdown of the number of shares sold at each price within the stated ranges.
• Control note: The filing includes a footnote that the reporting person exercises sole voting and dispositive control over shares held by Triumph Way Investment Inc.
• Shares owned after the transaction: Not specified in the excerpt provided; consult the full Form 4 for post-transaction holdings (column 11/total holdings).

Context
These were open-market sales (not option exercises, gifts, or awards). Sales by insiders can be for many reasons (diversification, liquidity, planned programs); they are not by themselves evidence of company outlook. The filing’s disclosure of weighted-average prices and price ranges is standard when multiple trades occur at different prices.