Ambiq Micro, Inc. (AMBQ)
NYSE: AMBQ · Semiconductors & Related Devices · Austin, TX · filing with the SEC since 2010
Who owns Ambiq Micro, Inc.
As filed with the SECHolders of 5% or more
2
KPCB XVI Associates, LLC holds 8.2% of Common Stock, $0.000001 par value per share, as its SCHEDULE 13G filed Nov 3, 2025 says.
Directors and officers
10
report now, of 10 people on the record since 2025. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
KPCB XVI Associates, LLC
SCHEDULE 13G · filed Nov 3, 2025 · Common Stock, $0.000001 par value per share
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 27, 2026 · Common Stock · 5.3% in Jul 27, 2026
T. Rowe Price Investment Management, Inc.
SCHEDULE 13G/A · filed Aug 14, 2026 · COMMON STOCK · reported falling below 5%, from 6% in May 15, 2026
What AMBQ reports owning in othersstakes of 5% or more, and other ties
Ambiq Micro, Inc. reports no stake in another company in the record.
Insider tradesForm 4
79sales
0purchases
48sales on a scheduled plan
8people selling
$38.9Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 16, 2025 to Oct 16, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 16, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window8 of 12 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Esaka Fumihide | Chief Executive Officer | 25 | $16.6M | 21 | 0 | $0 |
| Chen Sean Chihhsiang | President and COO | 19 | $7.4M | 17 | 0 | $0 |
| Hanson Scott Mclean | Chief Technology Officer | 20 | $6.1M | 10 | 0 | $0 |
| Chen Timothy | director | 4 | $5.6M | 0 | 0 | $0 |
| Winzeler Jeffrey G | Chief Financial Officer | 5 | $2.2M | 0 | 0 | $0 |
| Zhang Ker | director | 3 | $600,000 | 0 | 0 | $0 |
| Tautges Joseph A | director | 1 | $200,000 | 0 | 0 | $0 |
| Connors Michele Kim | General Counsel | 2 | $0 | 0 | 0 | $0 |