Insider · CIK 0002078454

Esaka Fumihide

Reports to the SEC for 1 company · AUSTIN, TX

sec.gov

Transactions

Companies

Filings

CIK

0002078454

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-10-15	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+5,000 sh	$8.12	+$40.6K	448,900
2026-10-15	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−2,800 sh	$51.15	−$143K	445,100
2026-10-15	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−5,000 sh	—	—	53,507
2026-10-15	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−1,200 sh	$51.85	−$62.2K	443,900
2026-10-15	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−500 sh	$50.02	−$25K	447,900
2026-10-15	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−500 sh	$49.13	−$24.6K	448,400
2026-10-02	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−8,585 sh	$69.77	−$599K	444,762
2026-10-02	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−862 sh	$71.86	−$61.9K	443,900
2026-10-02	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−7,113 sh	$69.11	−$492K	453,347
2026-09-15	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−100 sh	$61.00	−$6,100	460,460
2026-09-15	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−3,785 sh	$59.56	−$225K	470,175
2026-09-15	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+13.5K sh	$8.12	+$110K	473,960
2026-09-15	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−13.5K sh	—	—	58,507
2026-09-15	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−9,615 sh	$60.55	−$582K	460,560
2026-09-11	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−42.1K sh	$63.27	−$2.66M	468,377
2026-09-11	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−31K sh	—	—	144,279
2026-09-11	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−19K sh	—	—	0
2026-09-11	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−7,917 sh	$63.86	−$506K	460,460
2026-09-11	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+50K sh	$12.60	+$630K	510,460
2026-09-02	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−9,575 sh	$56.77	−$544K	460,460
2026-09-02	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+11K sh	$12.60	+$139K	471,487
2026-09-02	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−1,452 sh	$56.15	−$81.5K	470,035
2026-09-02	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−11K sh	—	—	19,007
2026-09-01	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−49K sh	—	—	30,034
2026-09-01	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−49K sh	$56.39	−$2.76M	460,460
2026-09-01	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+49K sh	$12.60	+$617K	509,433
2026-08-31	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−5,600 sh	$58.46	−$327K	460,460
2026-08-31	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−13.5K sh	—	—	72,007
2026-08-31	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−35K sh	—	—	79,007
2026-08-31	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−9,271 sh	—	—	175,272
2026-08-31	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+44.3K sh	$12.60	+$558K	495,460
2026-08-31	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−2,100 sh	$58.52	−$123K	451,189
2026-08-31	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−5,501 sh	$57.75	−$318K	453,289
2026-08-31	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−5,899 sh	$56.87	−$335K	458,790
2026-08-31	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+13.5K sh	$8.12	+$110K	464,689
2026-08-31	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−15.6K sh	$56.81	−$886K	479,860
2026-08-31	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−13.8K sh	$57.70	−$796K	466,060
2026-08-14	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+13.5K sh	$8.12	+$110K	464,689
2026-08-14	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−1,500 sh	$65.26	−$97.9K	451,189
2026-08-14	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−10.7K sh	$64.40	−$690K	452,689
2026-08-14	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−13.5K sh	—	—	85,507
2026-08-14	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−1,282 sh	$63.29	−$81.1K	463,407
2026-05-15	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−45.5K sh	—	—	99,007
2026-05-15	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+14.5K sh	$12.60	+$183K	451,189
2026-05-15	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−6,601 sh	—	—	184,543
2026-05-15	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−7,936 sh	—	—	114,007
2026-05-15	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+45.5K sh	$8.12	+$369K	436,652
2026-05-14	AMBQAmbiq Micro, Inc.M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	+60K sh	$8.12	+$487K	451,189
2026-05-14	AMBQAmbiq Micro, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director, Chief Executive Officer	MExercise/Conversion	−60K sh	—	—	144,470
2026-05-14	AMBQAmbiq Micro, Inc.S Sale	Director, Chief Executive Officer	SSale	−60K sh	$70.02	−$4.2M	391,189

Recent filings

Accepted (ET)
Oct 16 16:524
Esaka Fumihide0002078454-26-000020
SEC(opens sec.gov)
Oct 64
Esaka Fumihide0002078454-26-000018
SEC(opens sec.gov)
Sep 154
Esaka Fumihide0002078454-26-000014
SEC(opens sec.gov)
Sep 24
Esaka Fumihide0002078454-26-000012
SEC(opens sec.gov)

Companies

Ambiq Micro, Inc.Director, Chief Executive OfficerAMBQ

Address

C/O AMBIQ MICRO, INC. 6500 RIVER PLACE BLVD BUILDING 7 STE 200

AUSTIN, TX, 78730