STOCK TITAN

Ambiq Micro (NASDAQ: AMBQ) CTO exercises 18,300 options, sells 10,200 shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Ambiq Micro Chief Technology Officer Hanson Scott McLean reported a mix of option exercises and share sales. On May 14, he exercised stock options at $8.12 per share for 10,200 shares of common stock, then sold a total of 10,200 common shares in several open-market trades at weighted average prices between $68.6234 and $70.50 per share. On May 15, he exercised additional options for 8,100 shares at the same $8.12 exercise price. Following these transactions, he directly holds 211,226 shares of common stock and 69,279 stock options, with the reported option grant vesting monthly after an initial vesting on August 16, 2019 and expiring on October 1, 2028.

Positive

  • None.

Negative

  • None.
Insider Hanson Scott McLean
Role Chief Technology Officer
Sold 10,200 shs ($706K)
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 8,100 $0.00 --
Exercise Common Stock 8,100 $8.12 $66K
Exercise Stock Option (Right to Buy) 10,200 $0.00 --
Exercise Common Stock 10,200 $8.12 $83K
Sale Common Stock 3,900 $68.6234 $268K
Sale Common Stock 6,100 $69.5936 $425K
Sale Common Stock 200 $70.50 $14K
Holdings After Transaction: Stock Option (Right to Buy) — 69,279 shares (Direct, null); Common Stock — 211,226 shares (Direct, null)
Footnotes (1)
  1. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $68.22 to $69.01 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. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.295 to $70.24 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. 1/4 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.
Options exercised 18,300 shares Total stock options exercised at $8.12 per share on May 14–15
Exercise price $8.12 per share Strike price for exercised stock options
Shares sold 10,200 shares Common stock sold in open-market transactions on May 14
Sale prices $68.6234–$70.50 Weighted average prices per share for open-market sales
Common shares held 211,226 shares Direct common stock ownership following transactions
Options remaining 69,279 options Stock options remaining after exercises, expiring October 1, 2028
weighted average sale price financial
"The reported price in Column 4 is a weighted average sale price."
Stock Option (Right to Buy) financial
"security_title": "Stock Option (Right to Buy)""
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
Exercise or conversion of derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security""
vested in equal monthly installments financial
"and 1/48 of the shares subject to the option vested in equal monthly installments thereafter"
SEC Form 4
FORM 4UNITED 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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Technology Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/14/2026M10,200A$8.12213,326D
Common Stock05/14/2026S3,900D$68.6234(1)209,426D
Common Stock05/14/2026S6,100D$69.5936(2)203,326D
Common Stock05/14/2026S200D$70.5203,126D
Common Stock05/15/2026M8,100A$8.12211,226D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$8.1205/14/2026M10,200 (3)10/01/2028Common Stock10,200$077,379D
Stock Option (Right to Buy)$8.1205/15/2026M8,100 (3)10/01/2028Common Stock8,100$069,279D
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 $68.22 to $69.01 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 $69.295 to $70.24 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. 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.
/s/ Jeffrey Winzeler, Attorney-in-Fact05/18/2026
** Signature of Reporting PersonDate
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)

FAQ

What insider transactions did AMBQ CTO Hanson Scott McLean report?

Hanson Scott McLean reported exercising stock options and selling common shares. He exercised 18,300 options at $8.12 per share and sold 10,200 common shares in open-market trades at weighted average prices between $68.6234 and $70.50.

How many Ambiq Micro (AMBQ) shares did the CTO sell in this Form 4?

The CTO sold 10,200 shares of Ambiq Micro common stock. These were executed in multiple open-market transactions with weighted average sale prices disclosed between $68.6234 and $70.50 per share, as detailed in the Form 4 footnotes.

At what price did AMBQ’s CTO exercise his stock options?

He exercised his stock options at an exercise price of $8.12 per share. The Form 4 shows two option exercises totaling 18,300 shares of common stock at this strike price, converting derivative positions into directly held shares.

What are Hanson Scott McLean’s holdings after these AMBQ transactions?

After the reported transactions, he directly holds 211,226 shares of Ambiq Micro common stock. He also holds 69,279 stock options, which represent rights to acquire additional common shares under the company’s equity compensation arrangements.

When do the reported Ambiq Micro (AMBQ) stock options expire?

The stock options involved in these transactions expire on October 1, 2028. A footnote explains that one-quarter vested on August 16, 2019, with the remaining shares vesting in equal monthly installments thereafter, subject to continued service.