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Public ownership evidence

Amplitude, Inc. Class A Common Stock (AMPL) Ownership Disclosures

Read AMPL 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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2026-11-062026-11-05Skates SpenserS32Not reported

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

The displayed observation date is 2026-11-05 and its public availability date is 2026-11-06. 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 0001610717-26-000447 ↗SEC 0001610717-26-000447 ↗SEC 0001610717-26-000447 ↗

Recent Form 4 activity

Inspect all 15 displayed rows: Recent Form 4 activity

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2026-11-062026-11-05Skates SpenserS32Not reported
2026-11-062026-11-05Skates SpenserS29Not reported
2026-11-062026-11-04Skates SpenserS901Not reported
2026-10-282026-10-28Skates SpenserS6,651Not reported
2026-10-282026-10-26Skates SpenserS200Not reported
2026-10-282026-10-26Skates SpenserS100Not reported
2026-10-272026-10-23Skates SpenserS107,136Not reported
2026-10-152026-10-15Raji Vijaye GaneshA37,851Not reported
2026-10-072026-10-05Schultz EricaA892Not reported
2026-10-072026-10-05Tzuo TienA818Not reported
2026-10-062026-10-02Skates SpenserS70,087Not reported
2026-10-022026-10-01Skates SpenserS3,539Not reported
2026-10-022026-09-30Skates SpenserS1,374Not reported
2026-09-142026-09-10Skates SpenserS185,000Not reported
2026-09-092026-09-04Crook Nathaniel GlennS300,000Not 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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Cornerstone Financial Management LLC2025-12-312026-08-2947$544None
Corient Private Wealth LP2026-06-302026-08-28178,613$1,366,391None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2593,861$718,037None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25718,037$93,861,000None
Bullock Wealth Management Group2026-06-302026-08-20822$7,028None
Kingsview Wealth Management, LLC2026-06-302026-08-2010,185$77,915None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-20342,860$2,622,879None
Corient Private Wealth LP2026-06-302026-08-18178,613$1,366,391None
UNITED CAPITAL FINANCIAL ADVISORS, LLC2026-06-302026-08-18115,245$881,624None
WESTERLY CAPITAL MANAGEMENT, LLC2026-06-302026-08-15200,000$1,530,000None
DARK FOREST CAPITAL MANAGEMENT LP2026-06-302026-08-1550,216$384,152None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-152,127$16,272None
JPL Wealth Management, LLC2026-06-302026-08-154$31None
Quarry LP2026-06-302026-08-15580$4,437None
Meros Investment Management, LP2026-06-302026-08-15827,977$6,334,024None
Divisadero Street Capital Management, LP2026-06-302026-08-15100,000$765,000None
MONIMUS CAPITAL MANAGEMENT, LP2026-06-302026-08-15783,808$5,996,131None
XTX Topco Ltd2026-06-302026-08-15110,332$844,040None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15803,643$6,147,869None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15803,643$6,147,869None
ExodusPoint Capital Management, LP2026-06-302026-08-1559,265$453,377None
Optimus Prime Fund Management Co., Ltd.2026-06-302026-08-151,580,100$12,087,765None
Diametric Capital, LP2026-06-302026-08-1588,391$676,191None
OSAIC HOLDINGS, INC.2026-06-302026-08-155$38None
OSAIC HOLDINGS, INC.2026-06-302026-08-156,025$46,090None
Squarepoint Ops LLC2026-06-302026-08-151,021,647$7,815,600None
Man Group plc2026-06-302026-08-15338,754$2,591,468None
Trexquant Investment LP2026-06-302026-08-1558,389$446,676None
MetLife Investment Management, LLC2026-06-302026-08-1555,818$427,008None
JANE STREET GROUP, LLC2026-06-302026-08-1521,000$160,650Put
JANE STREET GROUP, LLC2026-06-302026-08-1590,700$693,855Call
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-15161,282$1,233,807None
Utah Retirement Systems2026-06-302026-08-15112,795$862,882None
Legal & General Group Plc2026-06-302026-08-1584,675$647,765None
Legal & General Group Plc2026-06-302026-08-1519,779$151,309None
Legal & General Group Plc2026-06-302026-08-159,717$74,335None
DRW Securities, LLC2026-06-302026-08-1510,597$81,067None
Verition Fund Management LLC2026-06-302026-08-15225,873$1,727,928None
Verition Fund Management LLC2026-06-302026-08-15225,873$1,727,928None
Jasper Ridge Partners, L.P.2026-06-302026-08-1520,855$159,541None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15181,500$1,388,475Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1521,700$166,005Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1590,687$693,756None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1513,812$105,662None
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC2026-06-302026-08-15354,831$2,714,457None
Circumference Group LLC2026-06-302026-08-15238,000$1,820,700None
S SQUARED TECHNOLOGY, LLC2026-06-302026-08-15315,402$2,412,825None
NANO CAP NEW MILLENNIUM GROWTH FUND L P2026-06-302026-08-15100,000$765,000None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15383,771$2,935,848None
VARCOV Co.2026-06-302026-08-1513,865$106,067None

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

Cornerstone Financial Management LLC ↗Corient Private Wealth LP ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Bullock Wealth Management Group ↗Kingsview Wealth Management, LLC ↗MERCER GLOBAL ADVISORS INC /ADV ↗Corient Private Wealth LP ↗UNITED CAPITAL FINANCIAL ADVISORS, LLC ↗WESTERLY CAPITAL MANAGEMENT, 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.