Ambiq CTO sells 55K shares after option exercise

Q: What insider transactions did AMBQ’s CTO report on this Form 4?

Hanson Scott McLean, Ambiq Micro’s Chief Technology Officer, reported exercising options into 65,000 shares of common stock and selling 55,000 shares in open-market transactions on August 26–27, 2026, combining derivative exercises with subsequent common stock sales.

Q: How many Ambiq Micro (AMBQ) options did the CTO exercise and at what price?

McLean exercised stock options covering a total of 65,000 shares of Ambiq Micro common stock at an exercise price of $8.12 per share, through multiple option exercises on August 26, 2026 and August 27, 2026.

Q: How many AMBQ shares did the CTO sell and at what prices?

McLean sold a total of 55,000 shares of Ambiq Micro common stock: 27,500 shares at a weighted average price of $59.5807, 22,590 shares at $59.6916, and 4,910 shares at $60.3210, each representing multiple trades within stated price ranges.

Q: Were the AMBQ insider sale prices single trades or weighted averages?

All reported sale prices are weighted average sale prices. Footnotes state the 27,500 shares sold ranged from $59.00–$59.90, the 22,590 shares from $59.11–$60.10, and the 4,910 shares from $60.11–$60.78 per share across multiple transactions.

Q: Does the Form 4 state how many AMBQ shares the CTO owns after these transactions?

No. For each reported transaction, the field for total shares following transaction is blank, so this Form 4 does not state McLean’s post-transaction holdings of Ambiq Micro common stock or options.

Q: Were the AMBQ sales made under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not checked (aff_10b5_one is false), and the footnotes do not mention any Rule 10b5-1 trading plan, so these transactions are not affirmatively identified as being under such a plan.

Ambiq Micro, Inc. (AMBQ) reported insider transactions by Chief Technology Officer Hanson Scott McLean involving option exercises and share sales on August 26–27, 2026.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Ambiq Micro, Inc. (AMBQ) reported insider transactions by Chief Technology Officer Hanson Scott McLean involving option exercises and share sales on August 26–27, 2026. McLean exercised stock options for a total of 65,000 shares of common stock at an exercise price of $8.12 per share, then sold 55,000 shares of common stock in open-market transactions at weighted average prices ranging from about $59.58 to $60.32 per share, according to footnote price ranges. The sales were executed in multiple trades within specified price ranges, and no post-transaction share holdings are reported in this filing.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 9 txns

Insider Hanson Scott McLean

Role Chief Technology Officer

Sold 55,000 shs ($3.28M)

Approx. gross sale proceeds $3.28M

Approx. exercise cost $528K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) ^F5	27,500	$0.00	$0.00
Exercise	Common Stock	27,500	$8.12	$223K
Sale	Common Stock ^F2	22,590	$59.6916	$1.35M
Sale	Common Stock ^F3	4,910	$60.321	$296K
Exercise	Stock Option (Right to Buy) ^F4	10,000	$0.00	$0.00
Exercise	Stock Option (Right to Buy) ^F5	27,500	$0.00	$0.00
Exercise	Common Stock	10,000	$8.12	$81K
Exercise	Common Stock	27,500	$8.12	$223K
Sale	Common Stock ^F1	27,500	$59.5807	$1.64M

Holdings After Transaction: Stock Option (Right to Buy) — 135,837 contracts (Direct); Common Stock — 221,226 shares (Direct)

Footnotes (5)

F1. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $59.00 to $59.90 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.
F2. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $59.11 to $60.10 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.
F3. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $60.11 to $60.78 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.
F4. 1/4 of the shares subject to the option vested on August 16, 2019, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service.
F5. 26,187 shares subject to the option vested on February 21, 2019, 1/4 of the remaining shares subject to the option vested on February 21, 2020, and 1/48 of the remaining shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service.

Key Figures

Options exercised (shares): 65,000 shares Shares sold: 55,000 shares Option exercise price: $8.12 per share +5 more

8 metrics

Options exercised (shares) 65,000 shares Total derivative exercises (code M) reported for Ambiq Micro common stock

Shares sold 55,000 shares Aggregate common stock sales (code S) on August 26–27, 2026

Option exercise price $8.12 per share Conversion or exercise price for stock options into Ambiq Micro common stock

Sale price (27,500 shares) $59.5807 per share Weighted average sale price on August 26, 2026; trades ranged $59.00–$59.90

Sale price (22,590 shares) $59.6916 per share Weighted average sale price on August 27, 2026; trades ranged $59.11–$60.10

Sale price (4,910 shares) $60.3210 per share Weighted average sale price on August 27, 2026; trades ranged $60.11–$60.78

Net buy/sell shares -55,000 shares Net share direction across buy/sell transactions; classified as net-sell

Derivative transaction count 3 transactions Stock option exercises (code M) reported for derivative securities

Key Terms

Stock Option (Right to Buy), weighted average sale price, exercise or conversion of derivative security, beneficial ownership

4 terms

Stock Option (Right to Buy) financial

"security_title: Stock Option (Right to Buy) with underlying common stock"

weighted average sale price financial

"The reported price in Column 4 is a weighted average sale price."

exercise or conversion of derivative security financial

"transaction_code M described as Exercise or conversion of derivative security"

beneficial ownership financial

"The Reporting Person undertakes to provide to the Issuer, any security holder..."

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

What insider transactions did AMBQ’s CTO report on this Form 4?

Hanson Scott McLean, Ambiq Micro’s Chief Technology Officer, reported exercising options into 65,000 shares of common stock and selling 55,000 shares in open-market transactions on August 26–27, 2026, combining derivative exercises with subsequent common stock sales.

How many Ambiq Micro (AMBQ) options did the CTO exercise and at what price?

McLean exercised stock options covering a total of 65,000 shares of Ambiq Micro common stock at an exercise price of $8.12 per share, through multiple option exercises on August 26, 2026 and August 27, 2026.

How many AMBQ shares did the CTO sell and at what prices?

McLean sold a total of 55,000 shares of Ambiq Micro common stock: 27,500 shares at a weighted average price of $59.5807, 22,590 shares at $59.6916, and 4,910 shares at $60.3210, each representing multiple trades within stated price ranges.

Were the AMBQ insider sale prices single trades or weighted averages?

All reported sale prices are weighted average sale prices. Footnotes state the 27,500 shares sold ranged from $59.00–$59.90, the 22,590 shares from $59.11–$60.10, and the 4,910 shares from $60.11–$60.78 per share across multiple transactions.

Does the Form 4 state how many AMBQ shares the CTO owns after these transactions?

No. For each reported transaction, the field for total shares following transaction is blank, so this Form 4 does not state McLean’s post-transaction holdings of Ambiq Micro common stock or options.

Were the AMBQ sales made under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not checked (aff_10b5_one is false), and the footnotes do not mention any Rule 10b5-1 trading plan, so these transactions are not affirmatively identified as being under such a plan.

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Available on EDGAR 08/28/2026 - 05:19 PM Accepted by SEC EDGAR 08/28/2026 - 05:19 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Hanson Scott McLean

(Last)

(First)

(Middle)

C/O AMBIQ MICRO, INC.

6500 RIVER PLACE BLVD BUILDING 7 STE 200

(Street)

AUSTIN

TEXAS

78730

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Ambiq Micro, Inc. [ AMBQ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/26/2026		M		10,000	A	$8.12	221,226	D
Common Stock	08/26/2026		M		27,500	A	$8.12	248,726	D
Common Stock	08/26/2026		S		27,500	D	$59.5807⁽¹⁾	221,226	D
Common Stock	08/27/2026		M		27,500	A	$8.12	248,726	D
Common Stock	08/27/2026		S		22,590	D	$59.6916⁽²⁾	226,136	D
Common Stock	08/27/2026		S		4,910	D	$60.321⁽³⁾	221,226	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (Right to Buy)	$8.12	08/26/2026		M			10,000	⁽⁴⁾	10/01/2028	Common Stock	10,000	$0	52,279	D
Stock Option (Right to Buy)	$8.12	08/26/2026		M			27,500	⁽⁵⁾	02/20/2029	Common Stock	27,500	$0	111,058	D
Stock Option (Right to Buy)	$8.12	08/27/2026		M			27,500	⁽⁵⁾	02/20/2029	Common Stock	27,500	$0	83,558	D

Explanation of Responses:

1. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $59.00 to $59.90 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.

2. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $59.11 to $60.10 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.

3. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $60.11 to $60.78 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.

4. 1/4 of the shares subject to the option vested on August 16, 2019, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service.

5. 26,187 shares subject to the option vested on February 21, 2019, 1/4 of the remaining shares subject to the option vested on February 21, 2020, and 1/48 of the remaining shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service.

	/s/ Jeffrey Winzeler, Attorney-in-Fact	08/28/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR