Fumihide Esaka

Companies

• Ambiq Micro, Inc.Board member Jul 29, 2025 to now¹
• Ambiq Micro, Inc.Chief executive officer Jul 29, 2025 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• AMAmbiq Micro, Inc. AMBQ460,460 shares²$22.8M at $49.59Sep 15, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 15, 2026Sold 100 shares at $61.00 of Ambiq Micro, Inc.²
• Sep 15, 2026Sold 9,615 shares at $60.55 of Ambiq Micro, Inc.²
• Sep 15, 2026Sold 3,785 shares at $59.56 of Ambiq Micro, Inc.²
• Sep 15, 2026Exercised options 13,500 shares at $8.12 of Ambiq Micro, Inc.²
• Sep 11, 2026Sold 7,917 shares at $63.86 of Ambiq Micro, Inc.²
• Sep 11, 2026Sold 42,083 shares at $63.27 of Ambiq Micro, Inc.²
• Sep 11, 2026Exercised options 50,000 shares at $12.60 of Ambiq Micro, Inc.²
• Sep 2, 2026Sold 9,575 shares at $56.77 of Ambiq Micro, Inc.³
• Sep 2, 2026Sold 1,452 shares at $56.15 of Ambiq Micro, Inc.³
• Sep 2, 2026Exercised options 11,027 shares at $12.60 of Ambiq Micro, Inc.³
• Sep 1, 2026Sold 48,973 shares at $56.39 of Ambiq Micro, Inc.³
• Sep 1, 2026Exercised options 48,973 shares at $12.60 of Ambiq Micro, Inc.³
• Aug 31, 2026Sold 5,600 shares at $58.46 of Ambiq Micro, Inc.³
• Aug 31, 2026Sold 13,800 shares at $57.70 of Ambiq Micro, Inc.³
• Aug 31, 2026Sold 15,600 shares at $56.81 of Ambiq Micro, Inc.³
• Aug 31, 2026Exercised options 44,271 shares at $12.60 of Ambiq Micro, Inc.³
• Aug 31, 2026Sold 2,100 shares at $58.52 of Ambiq Micro, Inc.³
• Aug 31, 2026Sold 5,501 shares at $57.75 of Ambiq Micro, Inc.³
• Aug 31, 2026Sold 5,899 shares at $56.87 of Ambiq Micro, Inc.³
• Aug 31, 2026Exercised options 13,500 shares at $8.12 of Ambiq Micro, Inc.³
• Aug 14, 2026Sold 1,500 shares at $65.26 of Ambiq Micro, Inc.⁴
• Aug 14, 2026Sold 10,718 shares at $64.40 of Ambiq Micro, Inc.⁴
• Aug 14, 2026Sold 1,282 shares at $63.29 of Ambiq Micro, Inc.⁴
• Aug 14, 2026Exercised options 13,500 shares at $8.12 of Ambiq Micro, Inc.⁴
• May 15, 2026Exercised options 14,537 shares at $12.60 of Ambiq Micro, Inc.⁵