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 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Ambiq Micro, Inc.: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-07
Trade date
2026-10-02
Reporting owners
Winzeler Jeffrey G
Code
S
Shares
284
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001312143-26-000013
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read AMBQ fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read AMBQ fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
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
2026-09-032026-08-31Esaka FumihideS15,600Not reported
2026-09-032026-08-31Esaka FumihideS2,100Not reported
2026-09-032026-08-31Esaka FumihideS5,501Not reported
2026-09-032026-08-31Esaka FumihideS5,899Not reported
2026-08-292026-08-27Hanson Scott McLeanS4,910Not reported
2026-08-292026-08-27Hanson Scott McLeanS22,590Not reported
2026-08-292026-08-26Hanson Scott McLeanS27,500Not reported
2026-08-192026-08-14Esaka FumihideS1,500Not reported
2026-08-192026-08-14Esaka FumihideS10,718Not reported
2026-08-192026-08-14Esaka FumihideS1,282Not reported
2026-08-192026-08-14Hanson Scott McLeanS800Not reported
2026-08-192026-08-14Hanson Scott McLeanS5,400Not reported
2026-08-192026-08-14Hanson Scott McLeanS800Not reported

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

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.

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.

No records are available for this view.

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.

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