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BCS

Changes in Beneficial Ownership · 4

Ambiq Micro, Inc.

AMBQNYSEEQUITYCurrent

Changes in Beneficial Ownership

Filed Oct 6, 2026Accepted Oct 6, 2026, 8:16 PM EDTFiling CIK 1500412Accession 0001312143-26-000013
Share

Structured filing — 4

form4-10072026_121004.xml

Open full document ↗

Filing details

Report period
2026-10-02
Issuer
Ambiq Micro, Inc.
Issuer CIK
0001500412
Trading symbol
AMBQ

Reporting owner 1

Name
Winzeler Jeffrey G
Reporting owner CIK
0001312143
Relationship
Officer
Officer title
Chief Financial Officer
Address
C/O AMBIQ MICRO, INC., 6500 RIVER PLACE BLVD BUILDING 7 STE 200, AUSTIN, TX, 78730

Non-derivative transactions

Non-derivative transactions · 3 reported rows
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Common Stock2026-10-02S · Form 4[F1]2,343D69.1083[F2]103,956D
Common Stock2026-10-02S · Form 4[F1]2,828D69.7722[F3]101,128D
Common Stock2026-10-02S · Form 4[F1]284D71.8592[F4]100,844D
Table key
S · Form 4
Sale on the market or privately
D
Direct

Footnotes

F1
This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units.↩ 1↩ 2↩ 3
F2
The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $68.41 to $69.40 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.↩ 1
F3
The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.41 to $70.16 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.↩ 1
F4
The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $71.50 to $72.26 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.↩ 1

Signature 1

Signed
/s/ Jeffrey Winzeler
Date
2026-10-06

Company context

We are a pioneer and leading provider of ultra-low power semiconductor solutions designed to address the significant power consumption challenges of general purpose and AI compute – especially at the edge.

Current securities

Recent company filings

  1. 10-Q filingNov 10, 2026
  2. Results of Operations and Financial ConditionNov 10, 2026
  3. 144 filingOct 2, 2026
  4. 4 filingSep 15, 2026
  5. 144 filingSep 11, 2026

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