Chen Timothy 4/A

What Happened

• Timothy Chen, a director of Ambiq Micro (AMBQ), reported conversions of derivative securities on July 31, 2025. The filing shows 70,592 shares "acquired" and 1,707,853 shares "disposed" via conversion (both recorded as derivative conversions). The disposed shares are reported at $0.00, indicating a non‑cash conversion rather than a market sale.
• This represents the automatic conversion of the company’s Series F‑1 Convertible Preferred Stock into common stock immediately prior to the issuer’s IPO (footnote F1). The Form 4 is an amended filing to include an indirectly held position that was previously omitted.

Key Details

• Transaction date: 2025-07-31; transaction type: conversion of derivative security (code C).
• Prices/consideration: disposed shares reported at $0.00 (conversion, not a cash sale).
• Reported amounts: 70,592 shares acquired; 1,707,853 shares disposed (conversion).
• Post‑transaction holdings: not disclosed in this filing.
• Footnotes: F1—Series F‑1 automatically converted into common stock immediately prior to IPO; F2—Chen exercises sole voting/dispositive control over shares held by Triumph Way Investment Inc. (indirect ownership).
• Filing status: This is an AMENDED Form 4 filed 2026‑05‑29 to include a previously omitted indirectly held transaction (i.e., the amendment was filed after the original transaction reporting).

Context

• Conversions of convertible preferred into common at IPO are routine corporate events and are recorded at $0 consideration because no cash changes hands; this is not a public sale of shares.
• Because the reporting person exercises control over shares held through Triumph Way Investment Inc., some converted shares are reported as indirectly held. The amendment suggests the indirect conversion disclosure was initially missed and later corrected.