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Disclosery

AMBQ AMBIQ MICRO INC

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COMMON STOCK (common), issuer CIK 1500412

73 managers (73 13F filers) reported a position in AMBQ shares at 2025-09-30, 4,506,641 shares in all. 73 filers opened a position and 0 filers sold out during the quarter.

Managers
73
13F filers
73
New
73
Added
0
Reduced
0
Sold out
0
Shares held by filers
4,506,641

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
Chen Sean Chihhsiangofficer (President and COO)2026-10-05-100 S$69.51Form 4
Chen Sean Chihhsiangofficer (President and COO)2026-10-05-800 S$68.0757Form 4
Chen Sean Chihhsiangofficer (President and COO)2026-10-05-1,797 S$67.2861Form 4
Chen Sean Chihhsiangofficer (President and COO)2026-10-05-5,508 S$66.3808Form 4
Winzeler Jeffrey Gofficer (Chief Financial Officer)2026-10-02-284 S$71.8592Form 4
Winzeler Jeffrey Gofficer (Chief Financial Officer)2026-10-02-2,828 S$69.7722Form 4
Winzeler Jeffrey Gofficer (Chief Financial Officer)2026-10-02-2,343 S$69.1083Form 4
Esaka Fumihidedirector, officer (Chief Executive Officer)2026-10-02-862 S$71.8592Form 4
Esaka Fumihidedirector, officer (Chief Executive Officer)2026-10-02-8,585 S$69.7722Form 4
Esaka Fumihidedirector, officer (Chief Executive Officer)2026-10-02-7,113 S$69.1083Form 4
Hanson Scott McLeandirector, officer (Chief Technology Officer)2026-10-02-452 S$71.8592Form 4
Hanson Scott McLeandirector, officer (Chief Technology Officer)2026-10-02-4,500 S$69.7722Form 4
Hanson Scott McLeandirector, officer (Chief Technology Officer)2026-10-02-3,728 S$69.1083Form 4
Chen Sean Chihhsiangofficer (President and COO)2026-10-02-302 S$71.8592Form 4
Chen Sean Chihhsiangofficer (President and COO)2026-10-02-3,008 S$69.7722Form 4

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Atreides Management, LP684,307$20.5M0.53%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.436,154$13M<0.01%new13F-HRTimeline
KADENSA CAPITAL Ltd394,991$11.8M1.22%new13F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC307,836$9.21M<0.01%new13F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.291,876$8.73M<0.01%new13F-HRTimelineGroup
Schonfeld Strategic Advisors LLC274,087$8.2M0.06%new13F-HRTimeline
Monashee Investment Management LLC200,000$5.98M2.98%new13F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC188,690$5.65M0.04%new13F-HRTimeline
Fortress Investment Group LLCin group Fortress Investment Group LLC150,000$4.49M0.6%new13F-HRTimelineGroup
SOFTBANK GROUP CORP.in group SOFTBANK GROUP CORP.148,939$4.46M0.02%new13F-HRTimelineGroup
WASATCH ADVISORS LP145,426$4.35M0.02%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC121,403$3.63M<0.01%new13F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC98,026$2.93M<0.01%new13F-HRTimelineGroup
GILDER GAGNON HOWE & CO LLC95,748$2.86M0.03%new13F-HRTimeline
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT…in group SUMMIT PARTNERS PUBLIC ASSET …93,597$2.8M0.09%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP72,296$2.16M<0.01%new13F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC60,000$1.8M<0.01%new13F-HRTimelineGroup
MAVERICK CAPITAL LTD59,248$1.77M0.02%new13F-HRTimeline
First Eagle Investment Management, LLCin group First Eagle Investment Manage…58,900$1.76M<0.01%new13F-HRTimelineGroup
SEVEN GRAND MANAGERS, LLC50,000$1.5M0.12%new13F-HRTimeline
UBS Group AGin group UBS Group AG41,430$1.24M<0.01%new13F-HRTimelineGroup
PEAK6 LLCin group PEAK6 LLC39,999$1.2M0.03%new13F-HR/ATimelineGroup
LMR Partners LLPin group LMR Partners LLP39,850$1.19M0.02%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP33,969$1.02M<0.01%new13F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co30,852$923K<0.01%new13F-HRTimelineGroup
Verition Fund Management LLC29,572$885K0.01%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd26,662$798K0.04%new13F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC22,627$677K<0.01%new13F-HRTimelineGroup
READYSTATE ASSET MANAGEMENT LP21,500$643K0.03%new13F-HRTimeline
Hound Partners, LLCin group Hound Partners, LLC20,000$598K0.08%new13F-HRTimelineGroup
Blackstone Inc.in group Blackstone Inc.20,000$598K<0.01%new13F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Ghisallo Capital Management LLC20,000$598K0.02%new13F-HRTimeline
Freestone Grove Partners LP20,000$598K<0.01%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\19,891$595K<0.01%new13F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.18,710$560K<0.01%new13F-HRTimelineGroup
KORNITZER CAPITAL MANAGEMENT INC /KS17,000$509K0.01%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.15,169$454K<0.01%new13F-HRTimelineGroup
Inspire Investing, LLCin group Inspire Investing, LLC15,076$451K0.04%new13F-HRTimelineGroup
Global Retirement Partners, LLC11,996$359K0.01%new13F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC11,555$346K<0.01%new13F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp11,053$331K<0.01%new13F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC9,246$277K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY8,711$261K<0.01%new13F-HR/ATimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP7,466$223K<0.01%new13F-HRTimelineGroup
KINGSWOOD WEALTH ADVISORS, LLC6,900$206K0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC6,568$197K<0.01%new13F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/5,912$177K<0.01%new13F-HR/ATimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA4,772$143K<0.01%new13F-HRTimelineGroup
RHUMBLINE ADVISERS3,983$119K<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.3,377$101K<0.01%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources11,960$99.7K<0.01%new13F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN3,116$93.2K<0.01%new13F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…3,032$90.7K<0.01%new13F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…2,166$64.8K<0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO1,877$56.2K<0.01%new13F-HR/ATimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,845$56.1K<0.01%new13F-HRTimelineGroup
Police & Firemen's Retirement System of…1,025$30.7K<0.01%new13F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC1,000$29.8K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…988$29.6K<0.01%new13F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS940$28.1K<0.01%new13F-HRTimelineGroup
STRS OHIO800$23.9K<0.01%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc473$14.1K<0.01%new13F-HRTimelineGroup
Caitong International Asset Management …454$13.6K0.01%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…399$11.9K<0.01%new13F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…389$11.6K<0.01%new13F-HRTimelineGroup
Hurley Capital, LLC200$5.98K<0.01%new13F-HRTimeline
AMALGAMATED BANK151$5K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC146$4.37K<0.01%new13F-HRTimelineGroup
Sterling Capital Management LLC122$3.65K<0.01%new13F-HRTimeline
FMR LLCin group FMR LLC111$3.32K<0.01%new13F-HRTimelineGroup
MassMutual Private Wealth & Trust, FSB58$1.74K<0.01%new13F-HRTimeline
Quarry LP18$539<0.01%new13F-HRTimeline
Coston, McIsaac & Partners1$00%new13F-HRTimelineValue filed as zero, left out of ratios.

Events

  • Winzeler Jeffrey G sold 5,455 AMBQ shares on 2026-10-02, Form 4 filed 2026-10-06. 0001312143-26-000013

    Accepted , ingested

  • Esaka Fumihide sold 16,560 AMBQ shares on 2026-10-02, Form 4 filed 2026-10-06. 0002078454-26-000018

    Accepted , ingested

  • Hanson Scott McLean sold 8,680 AMBQ shares on 2026-10-02, Form 4 filed 2026-10-06. 0002078339-26-000018

    Accepted , ingested

  • Chen Sean Chihhsiang sold 14,007 AMBQ shares between 2026-10-02 and 2026-10-05, Form 4 filed 2026-10-06. 0002078559-26-000014

    Accepted , ingested