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 10 sales; 184 institutions reported holding it in 13F filings for Q2 2026, worth $1.48B in total; no superinvestor holds it.
Holders of 5% or more of AMBQ
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Ambiq Micro, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Kleiner Perkins Caufield & Byers XVI, LLC | 13G | 8.20%1.49M shares | New | Nov 3, 20251 filing | Nov 3, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
1 Schedule 13D or 13G filing on Ambiq Micro, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 3, 20259:50 PM ET | Kleiner Perkins Caufield & Byers XVI, LLCand 5 others | 13G | 8.20%1.49M shares | New | Sep 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Ambiq Micro, Inc. shares.
No Form 144 notices for Ambiq Micro, Inc. are on file.