Transaction · 0002078454-26-000012

Esaka Fumihide

Esaka Fumihide, CEO, reported a transaction classified as exercise at Ambiq Micro, Inc. involving 11027.000000 shares for an estimated $0.00. Reported holdings after the transaction were 19007.000000 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MCEO
AMBQAmbiq Micro, Inc.
Filing timeSep 02
Trade dateSep 02, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$57.30
Pre-filing
1mo ago +13.3%1w ago +2.9%1d ago -2.4%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

AMBQ price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
AMBQ since 2026-09-02Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0002078454-26-000012
Stock Option (Right to Buy)
Transaction date
Sep 02, 2026
Filed Sep 02, 2026, 08:47 PM · 0d delay
Shares
11.0k sh
$0 per share
Estimated value
$0
Computed from shares × price
Holdings after
19.0k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Derivative Transaction Direct Ownership Large Holdings Reduction 10b5-1 Detected
-16score
Filing-only score

-16

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Executive Officer

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

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

  2. F2

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $56.35 to $57.34 per share. The Reporting Person undertakes to p…

  3. F3

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $57.37 to $58.24 per share. The Reporting Person undertakes to p…

  4. F4

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $58.42 to $58.74 per share. The Reporting Person undertakes to p…

  5. F5

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $56.29 to $57.28 per share. The Reporting Person undertakes to p…

  6. F6

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $57.29 to $58.28 per share. The Reporting Person undertakes to p…

  7. F7

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $58.29 to $58.49 per share. The Reporting Person undertakes to p…

  8. F8

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $56.00 to $56.83 per share. The Reporting Person undertakes to p…

  9. F9

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $55.45 to $56.44 per share. The Reporting Person undertakes to p…

  10. F10

    The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $56.46 to $57.06 per share. The Reporting Person undertakes to p…

  11. F11

    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 con…

  12. F12

    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 contin…

  13. F13

    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 continu…

Original filing · 0002078454-26-000012
Related transactions

0 other filings

Same reporting owner
Recent company activity

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