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  4. [144] Ambiq Micro, Inc. SEC Filing

Fumihide Esaka plans $625K Ambiq stock sale

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
144

Rhea-AI Filing Summary

Ambiq Micro, Inc. (AMBQ) received a notice under Rule 144 that Fumihide (Humi) Esaka intends to sell 11,027 shares of common stock, expected to be sold through Morgan Stanley Smith Barney LLC on September 2, 2026, following an exercise of options under a registered plan.

The shares proposed for sale have an indicated aggregate market value of $625,108.50. Ambiq Micro reports that 24,184,536 shares of common stock were outstanding, which is a baseline figure, not the amount being sold.

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Shares proposed for sale 11,027 shares Common stock covered by the Rule 144 notice
Aggregate market value of proposed sale $625,108.50 Value of 11,027 AMBQ shares in the Rule 144 securities information
Shares outstanding 24,184,536 shares Ambiq Micro, Inc. common stock outstanding as reported in the Rule 144 section
Shares sold on September 1, 2026 48,973 shares Common stock sold by Fumihide Esaka during the past three months
Proceeds on September 1, 2026 sale $2,761,533.60 Value of 48,973 AMBQ shares sold on September 1, 2026
Shares sold on August 31, 2026 35,000 shares Common stock sold by Fumihide Esaka on August 31, 2026
Shares sold on August 14, 2026 13,500 shares Common stock sold by Fumihide Esaka on August 14, 2026
Rule 144 regulatory
"See the definition of "person" in paragraph (a) of Rule 144."
Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.
aggregate market value financial
"Common ... 11027 | 625108.50 | 24184536"
Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.
Exercise of Options Under a Registered Plan financial
"Common | 09/02/2026 | Exercise of Options Under a Registered Plan"
Securities To Be Sold regulatory
"144: Securities To Be Sold"

FAQ

What does the Form 144 filing disclose for AMBQ?
It discloses that Fumihide (Humi) Esaka has filed a Rule 144 notice to sell 11,027 shares of Ambiq Micro, Inc. common stock, in connection with an exercise of options under a registered plan, with the proposed sale date of September 2, 2026.

How many AMBQ shares are proposed to be sold in this Form 144?
The notice covers a proposed sale of 11,027 shares of Ambiq Micro, Inc. common stock. The filing lists an aggregate market value of $625,108.50 for these shares in the Rule 144 securities information section.

What prior AMBQ share sales has Fumihide Esaka reported in the last three months?
The filing lists sales of 48,973 shares on September 1, 2026 for $2,761,533.60, 35,000 shares on August 31, 2026 for $2,009,854.00, and 13,500 shares on August 14, 2026 for $869,225.85 of Ambiq Micro, Inc. common stock.

What is the reported market value of the AMBQ shares to be sold under this Form 144?
For the 11,027 shares of Ambiq Micro, Inc. common stock covered by the notice, the filing states an aggregate market value of $625,108.50 in the securities information section tied to the proposed Rule 144 sale.

How many Ambiq Micro (AMBQ) shares are reported as outstanding?
The Rule 144 disclosure reports that Ambiq Micro, Inc. has 24,184,536 shares of common stock outstanding. This is provided as a reference outstanding share count, not as a number of shares being sold under the notice.

What is the source of the AMBQ shares being sold in this Rule 144 notice?
The shares are tied to an Exercise of Options Under a Registered Plan, with the issuer listed as Ambiq Micro, Inc. and the consideration shown as cash in the Rule 144 "Securities To Be Sold" section dated September 2, 2026.

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144: Filer Information

144: Issuer Information

144: Securities Information



Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold


* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.



Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

144: Remarks and Signature

Source: View Original Filing on SEC EDGAR