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Public ownership evidence

Ambiq Micro, Inc. (AMBQ) Ownership Disclosures

Read AMBQ insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-10-162026-10-15Hanson Scott McLeanS1,800Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-15 and its public availability date is 2026-10-16. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0002078339-26-000020 ↗SEC 0002078339-26-000020 ↗SEC 0002078339-26-000020 ↗

Recent Form 4 activity

Inspect all 50 displayed rows: Recent Form 4 activity

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2026-10-162026-10-15Hanson Scott McLeanS1,800Not reported
2026-10-162026-10-15Hanson Scott McLeanS3,700Not reported
2026-10-162026-10-15Hanson Scott McLeanS900Not reported
2026-10-162026-10-15Hanson Scott McLeanS600Not reported
2026-10-162026-10-15Esaka FumihideS1,200Not reported
2026-10-162026-10-15Esaka FumihideS2,800Not reported
2026-10-162026-10-15Esaka FumihideS500Not reported
2026-10-162026-10-15Esaka FumihideS500Not reported
2026-10-162026-10-14Chen Sean ChihhsiangS200Not reported
2026-10-162026-10-14Chen Sean ChihhsiangS4,000Not reported
2026-10-162026-10-14Chen Sean ChihhsiangS2,000Not reported
2026-10-162026-10-14Chen Sean ChihhsiangS1,261Not reported
2026-10-162026-10-14Chen Sean ChihhsiangS7,539Not reported
2026-10-072026-10-02Winzeler Jeffrey GS284Not reported
2026-10-072026-10-02Winzeler Jeffrey GS2,828Not reported
2026-10-072026-10-02Winzeler Jeffrey GS2,343Not reported
2026-10-062026-10-02Esaka FumihideS862Not reported
2026-10-062026-10-02Esaka FumihideS8,585Not reported
2026-10-062026-10-02Esaka FumihideS7,113Not reported
2026-10-062026-10-02Hanson Scott McLeanS452Not reported
2026-10-062026-10-02Hanson Scott McLeanS4,500Not reported
2026-10-062026-10-02Hanson Scott McLeanS3,728Not reported
2026-10-062026-10-05Chen Sean ChihhsiangS100Not reported
2026-10-062026-10-05Chen Sean ChihhsiangS800Not reported
2026-10-062026-10-05Chen Sean ChihhsiangS1,797Not reported
2026-10-062026-10-05Chen Sean ChihhsiangS5,508Not reported
2026-10-062026-10-02Chen Sean ChihhsiangS302Not reported
2026-10-062026-10-02Chen Sean ChihhsiangS3,008Not reported
2026-10-062026-10-02Chen Sean ChihhsiangS2,492Not reported
2026-09-172026-09-15Hanson Scott McLeanS100Not reported
2026-09-172026-09-15Hanson Scott McLeanS4,947Not reported
2026-09-172026-09-15Hanson Scott McLeanS1,953Not reported
2026-09-152026-09-11ZHANG KERS900Not reported
2026-09-152026-09-11ZHANG KERS9,100Not reported
2026-09-152026-09-14Chen Sean ChihhsiangS1,400Not reported
2026-09-152026-09-14Chen Sean ChihhsiangS11,000Not reported
2026-09-152026-09-14Chen Sean ChihhsiangS2,600Not reported
2026-09-152026-09-15Esaka FumihideS100Not reported
2026-09-152026-09-15Esaka FumihideS9,615Not reported
2026-09-152026-09-15Esaka FumihideS3,785Not reported
2026-09-152026-09-11Esaka FumihideS7,917Not reported
2026-09-152026-09-11Esaka FumihideS42,083Not reported
2026-09-092026-09-04Chen Sean ChihhsiangS2,126Not reported
2026-09-092026-09-04Chen Sean ChihhsiangS12,874Not reported
2026-09-092026-09-04ZHANG KERS185Not reported
2026-09-032026-09-02Esaka FumihideS9,575Not reported
2026-09-032026-09-02Esaka FumihideS1,452Not reported
2026-09-032026-09-01Esaka FumihideS48,973Not reported
2026-09-032026-08-31Esaka FumihideS5,600Not reported
2026-09-032026-08-31Esaka FumihideS13,800Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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First Eagle Investment Management, LLC2026-06-302026-08-25244,394$21,579,990None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25254$22,428None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2522,428$254,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-202,602$229,757None
Lotus Technology Management, LP2026-06-302026-08-155,443$480,617None
SEI INVESTMENTS CO2026-06-302026-08-1531,411$2,773,591None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-151,290$113,907None
Ilex Capital Partners (UK) LLP2026-06-302026-08-1513,515$1,193,375None
Quarry LP2026-06-302026-08-1515$1,325None
Capital Asset Advisory Services LLC2026-06-302026-08-1518,928$1,671,342None
T. Rowe Price Investment Management, Inc.2026-06-302026-08-151,006,359$88,862,000None
XTX Topco Ltd2026-06-302026-08-1516,723$1,476,641None
Resolute Advisors LLC2026-06-302026-08-153,000$264,900None
Atreides Management, LP2026-06-302026-08-15877,123$77,449,961None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-1598,449$8,693,047None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-1598,449$8,693,047None
IFG Advisory, LLC2026-06-302026-08-151,125$99,338None
Diametric Capital, LP2026-06-302026-08-155,935$524,060None
OSAIC HOLDINGS, INC.2026-06-302026-08-15100$8,830None
Schonfeld Strategic Advisors LLC2026-06-302026-08-15315,455$27,854,676None
Squarepoint Ops LLC2026-06-302026-08-1563,228$5,583,032None
Trexquant Investment LP2026-06-302026-08-1573,600$6,498,880None
MetLife Investment Management, LLC2026-06-302026-08-1510,932$965,296None
Engineers Gate Manager LP2026-06-302026-08-155,942$524,679None
JANE STREET GROUP, LLC2026-06-302026-08-15243,261$21,479,946None
JANE STREET GROUP, LLC2026-06-302026-08-1551,541$4,551,070None
JANE STREET GROUP, LLC2026-06-302026-08-1511,400$1,006,620Put
JANE STREET GROUP, LLC2026-06-302026-08-1514,800$1,306,840Call
Orion Porfolio Solutions, LLC2026-06-302026-08-154,198$370,683None
LMR Partners LLP2026-06-302026-08-1550,000$4,415,000None
VOLORIDGE INVESTMENT MANAGEMENT, LLC2026-06-302026-08-15223,276$19,715,271None
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-157,099$626,842None
COOPER CREEK PARTNERS MANAGEMENT LLC2026-06-302026-08-15220,000$19,426,000None
Legal & General Group Plc2026-06-302026-08-151,804$159,293None
HRT FINANCIAL LP2026-06-302026-08-15225,639$19,923,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1576,900$6,790,270Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1521,000$1,854,300Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-157,726$682,206None
S SQUARED TECHNOLOGY, LLC2026-06-302026-08-15120,773$10,664,256None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15289,206$25,536,890None
READYSTATE ASSET MANAGEMENT LP2026-06-302026-08-1537,930$3,349,219None
Numerai GP LLC2026-06-302026-08-1524,192$2,136,154None
Hood River Capital Management LLC2026-06-302026-08-15121,738$10,749,465None
SILVERCREST ASSET MANAGEMENT GROUP LLC2026-06-302026-08-15309,096$27,293,177None
AMERIPRISE FINANCIAL INC2026-06-302026-08-1523,821$2,103,395None
Kemnay Advisory Services Inc.2026-06-302026-08-1585$7,506None
G2 Investment Partners Management LLC2026-06-302026-08-1533,000$2,913,900None
Alyeska Investment Group, L.P.2026-06-302026-08-1510,329$912,051None
Lighthouse Investment Partners, LLC2026-06-302026-08-1512,834$1,133,242None
Woodline Partners LP2026-06-302026-08-1564,484$5,693,937None

90-day public filing window, up to 50 source positions.

First Eagle Investment Management, LLC ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗MERCER GLOBAL ADVISORS INC /ADV ↗Lotus Technology Management, LP ↗SEI INVESTMENTS CO ↗Aster Capital Management (DIFC) Ltd ↗Ilex Capital Partners (UK) LLP ↗Quarry LP ↗Capital Asset Advisory Services LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.