Notice of Proposed Sale · 144

Ambiq Micro, Inc.

AMBQNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Oct 2, 2026Accepted Oct 2, 2026, 4:11 PM EDTFiling CIK 2078339Accession 0002078339-26-000016

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Structured filing — 144

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: AMBIQ MICRO, INC.
Issuer CIK: 0001500412
SEC file number: 001-42766
Phone: (512) 879-2850
Person for whose account securities are to be sold: Scott McLean Hanson
Relationships to issuer: Officer · Director
Street: 6500 RIVER PLACE BLVD.
Street (continued): BUILDING 7 SUITE 200
City: AUSTIN
State / country code: TX
Postal code: 78730

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Common Stock	8,680	600,222.00	24,516,643	10/02/2026	NYSE	Morgan Stanley Smith Barney LLC

Broker / market maker — proposed row 1, entry 1

Name: Morgan Stanley Smith Barney LLC
Street: Executive Financial Services
Street (continued): 1 New York Plaza, 8th Floor
City: New York
State / country code: NY
Postal code: 10004

Acquisition of securities to be sold

Acquisition of securities to be sold · 1 reported row
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Common Stock	10/02/2025	Restricted Stock Units	Issuer	8,680	N	10/02/2025	Services Rendered

Sales reported in the preceding three months

Sales reported in the preceding three months · 4 reported rows
Seller	Security	Sale date	Amount sold	Gross proceeds
Scott McLean Hanson	Common Stock	09/15/2026	7,000	421,942.38
Scott McLean Hanson	Common Stock	08/27/2026	27,500	1,644,609.24
Scott McLean Hanson	Common Stock	08/26/2026	27,500	1,638,469.25
Scott McLean Hanson	Common Stock	08/14/2026	7,000	450,638.89

Seller — prior-sale row 1, entry 1

Name: Scott McLean Hanson
Street: 6500 River Place Blvd.
Street (continued): Building 7
City: Austin
State / country code: TX
Postal code: 78730

Seller — prior-sale row 2, entry 1

Name: Scott McLean Hanson
Street: 6500 River Place Blvd.
Street (continued): Building 7
City: Austin
State / country code: TX
Postal code: 78730

Seller — prior-sale row 3, entry 1

Name: Scott McLean Hanson
Street: 6500 River Place Blvd.
Street (continued): Building 7
City: Austin
State / country code: TX
Postal code: 78730

Seller — prior-sale row 4, entry 1

Name: Scott McLean Hanson
Street: 6500 River Place Blvd.
Street (continued): Unit 7
City: Austin
State / country code: TX
Postal code: 78730

Prior-sale reporting

Nothing to report for the preceding three months: N

Remarks

This is a sell-to-cover transaction for taxes owed related to recent vesting and settlement of restricted stock units granted by the Issuer.

Notice signature

Notice date: 10/02/2026
Signed: /s/ Scott McLean Hanson

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

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