Tapewire

NYSE · USD

AMBQ

Ambiq Micro, Inc.

Export transactions ↓
Tapewire entity
751
SEC CIK
0001500412
Parsed reports
63

Last 12 months

Inside the activity.

0 purchase rows · 66 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202500
Jan 202602
Feb 202600
Mar 202600
Apr 202602
May 2026012
Jun 202600
Jul 202600
Aug 2026015
Sep 2026019
Oct 2026016

Latest available

Insider transactions

JSON API
Reset

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
July 31, 2025 Filed Jul 31, 2025 22:27 UTC ConversionSeries G Convertible Preferred Stock · Derivative 394,989 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-020778 · form4-07312025_100746.xml · derivative · entry 2

HSIEH Wen Hsuan · CIK 0001835160 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By: Matter Venture Partners Fund I, L.P.

Disclosed balance after: 0

Underlying: Common Stock · 394,989 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The Series G Convertible Preferred Stock automatically converted into Common Stock on a one-for-one basis immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F1 · derivative.exercise_date: The Series G Convertible Preferred Stock automatically converted into Common Stock on a one-for-one basis immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F1 · derivative.expiration_date: The Series G Convertible Preferred Stock automatically converted into Common Stock on a one-for-one basis immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F2 · ownership.nature: The Reporting Person exercises sole voting and dispositive control over the shares held by Matter Venture Partners Fund I, L.P.

Read SEC document
July 31, 2025 Filed Jul 31, 2025 22:27 UTC ConversionCommon Stock 394,989 Not disclosed Not disclosed
Disclosure

SEC source: 0001415889-25-020778 · form4-07312025_100746.xml · nonDerivative · entry 1

HSIEH Wen Hsuan · CIK 0001835160 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By: Matter Venture Partners Fund I, L.P.

Disclosed balance after: 394,989

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Series G Convertible Preferred Stock automatically converted into Common Stock on a one-for-one basis immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F2 · ownership.nature: The Reporting Person exercises sole voting and dispositive control over the shares held by Matter Venture Partners Fund I, L.P.

Read SEC document
July 31, 2025 Filed May 29, 2026 23:49 UTC Amendment
Chen TimothyDirector
ConversionSeries F-1 Convertible Preferred Stock · Derivative 1,707,853 $0.00 $0.00
Disclosure

SEC source: 0001818099-26-000006 · form4a-05292026_110513.xml · derivative · entry 2

Chen Timothy · CIK 0001818099 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By: Triumph Way Investment Inc.

Disclosed balance after: 0

Underlying: Common Stock · 70,592 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The Series F-1 Convertible Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F1 · derivative.exercise_date: The Series F-1 Convertible Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F1 · derivative.expiration_date: The Series F-1 Convertible Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F2 · ownership.nature: The Reporting Person exercises sole voting and dispositive control over the shares held by Triumph Way Investment Inc.

Read SEC document
July 31, 2025 Filed May 29, 2026 23:49 UTC Amendment
Chen TimothyDirector
ConversionCommon Stock 70,592 Not disclosed Not disclosed
Disclosure

SEC source: 0001818099-26-000006 · form4a-05292026_110513.xml · nonDerivative · entry 1

Chen Timothy · CIK 0001818099 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By: Triumph Way Investment Inc.

Disclosed balance after: 70,592

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Series F-1 Convertible Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.

F2 · ownership.nature: The Reporting Person exercises sole voting and dispositive control over the shares held by Triumph Way Investment Inc.

Read SEC document
July 29, 2025 Filed Jul 31, 2025 22:23 UTC
Chen TimothyDirector
GrantCommon Stock 47,618 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-020776 · form4-07312025_100718.xml · nonDerivative · entry 1

Chen Timothy · CIK 0001818099 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,618

F1 · shares: Consists of previously granted restricted stock units ("RSUs") for which the liquidity event-based vesting condition was satisfied upon the effectiveness of the registration statement on Form S-1 filed by the Issuer in connection with the Issuer's initial public offering. The RSUs remain subject to service-based vesting conditions. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

Read SEC document
July 29, 2025 Filed Jul 31, 2025 22:14 UTC GrantCommon Stock 56,546 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-020772 · form4-07312025_100701.xml · nonDerivative · entry 1

TAUTGES JOSEPH A · CIK 0001482249 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,546

F1 · shares: Consists of previously granted restricted stock units ("RSUs") for which the liquidity event-based vesting condition was satisfied upon the effectiveness of the registration statement on Form S-1 filed by the Issuer in connection with the Issuer's initial public offering. The RSUs remain subject to service-based vesting conditions. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

Read SEC document
July 29, 2025 Filed Jul 31, 2025 22:19 UTC
ZHANG KERDirector
GrantCommon Stock 23,809 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-020774 · form4-07312025_100733.xml · nonDerivative · entry 1

ZHANG KER · CIK 0001266870 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,809

F1 · shares: Consists of previously granted restricted stock units ("RSUs") for which the liquidity event-based vesting condition was satisfied upon the effectiveness of the registration statement on Form S-1 filed by the Issuer in connection with the Issuer's initial public offering. The RSUs remain subject to service-based vesting conditions. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.