AMBQ · Ambiq Micro, Inc.

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.

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.

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.

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.

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.

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.

The transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $63.71 to $64.70 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 transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $62.66 to $63.64 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 transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $62.74 to $63.61 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 transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

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

The transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $63.99 to $64.90 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.

The transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $65.01 to $65.55 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 transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

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.

The transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $64.92 to $65.56 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.

Represents the grant of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in three equal annual installments following the date of grant, with each annual RSU vesting to occur on the earlier of: (i) the first, second, or third anniversary of the grant date, as applicable, or (ii) the date of the Company's first, second, or third annual stockholder meeting following the grant date, as applicable (or the date immediately prior to the applicable annual stockholder meeting if the Reporting Person's service as a director ends at such meeting due to the director's failure to be re-elected or the director not standing for re-election), subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

Represents the grant of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in three equal annual installments following the date of grant, with each annual RSU vesting to occur on the earlier of: (i) the first, second, or third anniversary of the grant date, as applicable, or (ii) the date of the Company's first, second, or third annual stockholder meeting following the grant date, as applicable (or the date immediately prior to the applicable annual stockholder meeting if the Reporting Person's service as a director ends at such meeting due to the director's failure to be re-elected or the director not standing for re-election), subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

Represents the grant of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in three equal annual installments following the date of grant, with each annual RSU vesting to occur on the earlier of: (i) the first, second, or third anniversary of the grant date, as applicable, or (ii) the date of the Company's first, second, or third annual stockholder meeting following the grant date, as applicable (or the date immediately prior to the applicable annual stockholder meeting if the Reporting Person's service as a director ends at such meeting due to the director's failure to be re-elected or the director not standing for re-election), subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

Represents the grant of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in three equal annual installments following the date of grant, with each annual RSU vesting to occur on the earlier of: (i) the first, second, or third anniversary of the grant date, as applicable, or (ii) the date of the Company's first, second, or third annual stockholder meeting following the grant date, as applicable (or the date immediately prior to the applicable annual stockholder meeting if the Reporting Person's service as a director ends at such meeting due to the director's failure to be re-elected or the director not standing for re-election), subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

Represents the grant of restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in three equal annual installments following the date of grant, with each annual RSU vesting to occur on the earlier of: (i) the first, second, or third anniversary of the grant date, as applicable, or (ii) the date of the Company's first, second, or third annual stockholder meeting following the grant date, as applicable (or the date immediately prior to the applicable annual stockholder meeting if the Reporting Person's service as a director ends at such meeting due to the director's failure to be re-elected or the director not standing for re-election), subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vested on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $80.30 to $81.27 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 Reporting Person exercises sole voting and dispositive control over the shares held by Triumph Way Investment Inc.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $81.325 to $81.755 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 Reporting Person exercises sole voting and dispositive control over the shares held by Triumph Way Investment Inc.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $79.30 to $80.28 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 Reporting Person exercises sole voting and dispositive control over the shares held by Triumph Way Investment Inc.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $78.29 to $79.26 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.

The Reporting Person exercises sole voting and dispositive control over the shares held by Triumph Way Investment Inc.

1/48 of the shares subject to the option vested on June 26, 2021, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service.

1/4 of the shares subject to the option vested on November 3, 2017, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service.

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

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.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $70.02 to $71.0097 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.

47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vest on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service.

1/4 of the shares subject to the option vested on January 1, 2024, and 1/48 of the shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $71.025 to $71.85 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.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.61 to $70.435 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.

47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vest on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service.

The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $70.00 to $70.45 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 $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.