Security key
023193105
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 10,993,196
- Total 13F value
- $281,512,037
- Share change
- +5,669,696
- SEC-reported price per share
- $25.41
- Number of holders
- 97
- Value change
- +$143,104,195
- Number of buys
- 79
- Number of sells
- 19
- Shares outstanding
- 23,403,698
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
97
Top holders
10
AMBQ full security history
Ownership snapshot
Full 13F holder table
Previous 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
15/15
Latest evidence
31 Dec 2025
13D/G
13F
Lead comparable stake: 8.2%
13D/G row: Kleiner Perkins Caufield & Byers XVI, LLC
Showing 1-6 of 15 holder rows.
Quick read
Kleiner Perkins Caufield & Byers XVI, LLC leads the comparable SEC ownership view at 8.2%.
15 of 15 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 5
Kleiner Perkins Caufield & Byers ...
8.2%
Atreides Management, LP
3%
ALLIANCEBERNSTEIN L.P.
1.7%
KADENSA CAPITAL Ltd
1.7%
VANGUARD GROUP INC
1.4%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 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 |
| Atreides Management, LP |
13F
Company
|
3%
|
$19,847,970
696,420 shares
|
— | 31 Dec 2025 |
| ALLIANCEBERNSTEIN L.P. |
13F
Company
|
1.7%
|
$11,268,074
395,371 shares
|
— | 31 Dec 2025 |
| KADENSA CAPITAL Ltd |
13F
Company
|
1.7%
|
$11,257,244
394,991 shares
|
— | 31 Dec 2025 |
| VANGUARD GROUP INC |
13F
Company
|
1.4%
|
$9,353,188
328,182 shares
|
— | 31 Dec 2025 |
| BlackRock, Inc. |
13F
Company
|
1.3%
|
$8,775,038
307,896 shares
|
— | 31 Dec 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 Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
97
Shares
10,993,196
Rows available
97
| 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 Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
74
Q1 2026 holders
97
Holder diff
23
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend