Skip to main content

Ambiq Micro, Inc.

AMBQ
Exchange
NYSE
Industry
Semiconductors & Related Devices
SEC CIK
0001500412

In the last 90 days, Ambiq Micro, Inc. insiders filed 0 open-market purchases and 17 sales; 184 institutions reported holding it in 13F filings for Q2 2026, worth $1.48B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Ambiq Micro, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
17 filings
5 insiders, $22.1M in total
Insiders trading
5
Net value
−$22.1M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Ambiq Micro, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Ambiq Micro, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Hanson Scott McLeanChief Technology Officer212,546Oct 16, 20268
Esaka FumihideChief Executive Officer443,900Oct 16, 20268
Chen Sean ChihhsiangPresident and COO106,268Oct 16, 20266
Winzeler Jeffrey GChief Financial Officer100,844Oct 6, 20264
Zhang KerDirector20,366Sep 15, 20263
Tautges Joseph ADirector53,703Jun 10, 20262
Chen TimothyDirector52,575Jun 10, 20263
HSIEH Wen HsuanDirector4,957Jun 10, 20262
Banks Bernard BennettDirector4,957Jun 10, 20261
Connors Michele KimGeneral Counsel60,554Apr 6, 20263
Kleiner Perkins Caufield & Byers XVI, LLC10% Owner1,488,949IndirectJul 31, 20250
KPCB XVI Associates, LLC10% Owner1,488,949IndirectJul 31, 20250

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Oct 16, 2026 (view filing)4:53 PM ETOct 151 dayHanson Scott McLeanChief Technology OfficerSSale−7.00K$51.00−$357.0K−3.2%212.5K after4 lots10b5-1
Oct 16, 2026 (view filing)4:52 PM ETOct 151 dayEsaka FumihideChief Executive OfficerSSale−5.00K$51.00−$255.0K−1.1%443.9K after4 lots10b5-1
Oct 16, 2026 (view filing)4:51 PM ETOct 142 daysChen Sean ChihhsiangPresident and COOSSale−15.0K$51.50−$772.4K−12.4%106.3K after5 lots10b5-1
Oct 6, 2026 (view filing)8:16 PM ETOct 24 daysWinzeler Jeffrey GChief Financial OfficerSSale−5.46K$69.60−$379.6K−5.1%100.8K after3 lots
Oct 6, 2026 (view filing)6:53 PM ETOct 24 daysEsaka FumihideChief Executive OfficerSSale−16.6K$69.60−$1.15M−3.6%443.9K after3 lots
Oct 6, 2026 (view filing)6:49 PM ETOct 24 daysHanson Scott McLeanChief Technology OfficerSSale−8.68K$69.60−$604.1K−3.9%212.5K after3 lots
Oct 6, 2026 (view filing)6:45 PM ETOct 2-54 daysChen Sean ChihhsiangPresident and COOSSale−14.0K$67.95−$951.7K−11.6%106.3K after7 lots10b5-1
Sep 17, 2026 (view filing)4:06 PM ETSep 152 daysHanson Scott McLeanChief Technology OfficerSSale−7.00K$60.28−$421.9K−3.1%221.2K after3 lots10b5-1
Sep 15, 2026 (view filing)6:58 PM ETSep 114 daysZhang KerDirectorSSale−10.0K$63.44−$634.4K−32.9%20.4K after2 lots
Sep 15, 2026 (view filing)6:57 PM ETSep 141 dayChen Sean ChihhsiangPresident and COOSSale−15.0K$60.14−$902.1K−11.1%120.3K after3 lots10b5-1
Sep 15, 2026 (view filing)6:56 PM ETSep 11-154 daysEsaka FumihideChief Executive OfficerSSale−63.5K$62.70−$3.98M−12.1%460.5K after5 lots10b5-1
Sep 9, 2026 (view filing)5:10 PM ETSep 45 daysChen Sean ChihhsiangPresident and COOSSale−15.0K$57.17−$857.6K−11.1%120.3K after2 lots10b5-1
Sep 9, 2026 (view filing)5:08 PM ETSep 45 daysZhang KerDirectorSSale−185$56.92−$10.5K−0.6%30.4K after
Sep 2, 2026 (view filing)4:47 PM ETAug 31-Sep 22 daysEsaka FumihideChief Executive OfficerSSale−108.5K$56.89−$6.17M−19.1%460.5K after9 lots10b5-1
Aug 28, 2026 (view filing)5:19 PM ETAug 26-272 daysHanson Scott McLeanChief Technology OfficerSSale−55.0K$59.69−$3.28M−19.9%221.2K after3 lots
Aug 18, 2026 (view filing)4:40 PM ETAug 144 daysHanson Scott McLeanChief Technology OfficerSSale−7.00K$64.38−$450.6K−3.2%211.2K after3 lots10b5-1
Aug 18, 2026 (view filing)4:30 PM ETAug 144 daysEsaka FumihideChief Executive OfficerSSale−13.5K$64.39−$869.2K−2.9%451.2K after3 lots10b5-1
May 29, 2026 (view filing)May 272 daysChen TimothyDirectorSSale−70.6K$79.79−$5.63M−100.0%0 after4 lots
May 18, 2026 (view filing)May 153 daysChen Sean ChihhsiangPresident and COOSSale−55.7K$70.88−$3.95M−31.6%120.3K after2 lots
May 18, 2026 (view filing)May 144 daysEsaka FumihideChief Executive OfficerSSale−60.0K$70.02−$4.20M−13.3%391.2K after
May 18, 2026 (view filing)May 144 daysHanson Scott McLeanChief Technology OfficerSSale−10.2K$69.24−$706.2K−4.8%203.1K after3 lots
May 18, 2026 (view filing)May 144 daysWinzeler Jeffrey GChief Financial OfficerSSale−26.0K$69.90−$1.82M−21.6%94.4K after2 lots
Apr 6, 2026 (view filing)Apr 24 daysConnors Michele KimGeneral CounselSSale−811$26.15−$21.2K−1.3%60.6K after2 lots
Jan 28, 2026 (view filing)Jan 262 daysHanson Scott McLeanChief Technology OfficerSSale−10.0K$31.00−$310.0K−7.5%122.8K after
Jan 28, 2026 (view filing)Jan 262 daysTautges Joseph ADirectorSSale−7.80K$31.00−$241.8K−13.8%48.7K after