Security key
023193105
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 4,494,661
- Total 13F value
- $134,481,888
- Share change
- +4,493,721
- SEC-reported price per share
- $29.92
- Number of holders
- 71
- Value change
- +$134,453,763
- Number of buys
- 70
- Shares outstanding
- 23,403,698
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
71
Top holders
10
AMBQ full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Ambiq Micro, Inc. SEC filings
Ambiq Micro, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 023193105
Recent filing periods:
Ownership snapshot
Top reported holders of AMBQ - Ambiq Micro, Inc. - COMMON STOCK (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Kleiner Perkins Caufield ...
Disclosed value leader
Kleiner Perkins Caufield ...
Comparable rows
1/2
Latest evidence
30 Sep 2025
13D/G
3/4/5
Lead comparable stake: 8.2%
1 rows are not safely comparable across share classes.
13D/G row: Kleiner Perkins Caufield & Byers XVI, LLC
Quick read
Kleiner Perkins Caufield & Byers XVI, LLC leads the comparable SEC ownership view at 8.2%.
1 of 2 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Kleiner Perkins Caufield & Byers XVI, LLC's linked filing trail.
Comparable ownership
Top 1
Kleiner Perkins Caufield & Byers ...
8.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-2 of 2 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Kleiner Perkins Caufield & Byers XVI, LLC |
13D/G
KPCB XVI Associates, LLC
|
8.2%
|
$44,549,354
1,488,949 shares
|
$0 | 30 Sep 2025 |
| KPCB XVI Associates, LLC |
3/4/5
10%+ Owner
|
—
class O/S missing
|
—
1,488,949 shares
|
— | 31 Jul 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
71
Shares
4,494,661
Rows available
71
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q4 2025 Across Filers
Q4 2025 holders
74
Q3 2025 holders
71
Holder diff
-3
| Investor | Q4 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q4 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend