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Amplitude, Inc.

AMPL
Exchange
Nasdaq
Industry
Services-Prepackaged Software
SEC CIK
0001866692

In the last 90 days, Amplitude, Inc. insiders filed 0 open-market purchases and 2 sales; 202 institutions reported holding it in 13F filings for Q2 2026, worth $615.1M in total; no superinvestor holds it.

Holders of 5% or more of AMPL

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Amplitude, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of AMPL
HolderLatest formStakeChangeFirst filedLatest filingFiling
Wellington Management Group LLP13G10.70%11.2M shares0.00 ppfrom 10.70%Apr 7, 20262 filingsApr 7, 2026SEC
SC US (TTGP), Ltd.13D/A9.90%10.2M shares–Feb 14, 20227 filingsFeb 25, 2025SEC
BlackRock, Inc.13G/A7.60%7.94M shares–Jul 27, 20261 filingJul 27, 2026SEC
Vanguard Portfolio Management LLC13G6.00%6.25M sharesNewApr 28, 20261 filingApr 28, 2026SEC
FMR LLC13G5.80%5.98M shares+2.50 ppfrom 3.30%Feb 9, 20228 filingsAug 6, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

58 Schedule 13D and 13G filings on Amplitude, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on AMPL
Filed (ET)FilerFormStakeChangeEvent dateFiling
Feb 14, 2022Liu Curtis13GOld format–New–SEC
Feb 14, 2022GIC Private Ltd13GOld format–New–SEC
Feb 14, 2022Battery Ventures XI-A, L.P.13GOld format–New–SEC
Feb 14, 2022Institutional Venture Partners XV, L.P.13GOld format–New–SEC
Feb 14, 2022Benchmark Capital Partners VIII, L.P.13GOld format–New–SEC
Feb 10, 2022FMR LLC13G/AOld format–––SEC
Feb 9, 2022Vanguard Group Inc13GOld format–New–SEC
Feb 9, 2022FMR LLC13GOld format–New–SEC

Form 144: proposed insider sales

24 notices from officers, directors and other affiliates planning to sell Amplitude, Inc. shares, newest first.

Form 144 notices for AMPL
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Feb 23, 20244:28 PM ETCatherine Jen WongOfficer3.52K$41.5KFeb 23, 202410b5-1Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Nov 17, 20234:25 PM ETCatherine Jen WongOfficer3.52K$36.8KNov 17, 202310b5-1Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Aug 17, 20234:12 PM ETCatherine Jen WongOfficer3.52K$39.5KAug 17, 202310b5-1Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 8, 20234:41 PM ETSequoia Grove UK, LPDirector57$573.42Jun 8, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 8, 20234:37 PM ETSequoia Grove II, LLCDirector2.74K$27.6KJun 8, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 8, 20234:34 PM ETSequoia Capital US Growth Fund VIII, LPDirector7.71K$77.5KJun 8, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 7, 20234:32 PM ETSequoia Grove UK, LPDirector1.72K$17.3KJun 7, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 7, 20234:26 PM ETSequoia Grove II, LLCDirector84.5K$849.1KJun 7, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 7, 20234:18 PM ETSequoia Capital US Growth Fund VIII, LPDirector237.3K$2.39MJun 7, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 6, 20234:40 PM ETSequoia Grove UK, LPDirector376$3.82KJun 6, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 6, 20234:34 PM ETSequoia Grove II, LLCDirector18.5K$187.4KJun 6, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 6, 20234:29 PM ETSequoia Capital US Growth Fund VIII, LPDirector51.9K$526.5KJun 6, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 5, 20234:33 PM ETSequoia Grove UK, LPDirector311$2.99KJun 5, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 5, 20234:28 PM ETSequoia Grove II, LLCDirector15.3K$146.6KJun 5, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 5, 20234:18 PM ETSequoia Capital US Growth Fund VIII, LPDirector42.9K$411.8KJun 5, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 2, 20234:56 PM ETSequoia Grove UK, LPDirector345$3.35KJun 2, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 2, 20234:52 PM ETSequoia Capital US Growth Fund VIII, LPDirector47.6K$461.5KJun 2, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 2, 20234:45 PM ETSequoia Grove II, LLCDirector16.9K$164.3KJun 2, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 1, 20234:58 PM ETSequoia Grove UK, LPDirector532$5.05KJun 1, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 1, 20234:56 PM ETSequoia Grove II, LLCDirector26.1K$248.1KJun 1, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jun 1, 20234:52 PM ETSequoia Capital US Growth Fund VIII, LPDirector73.4K$699.8KJun 1, 2023Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
May 18, 20236:42 PM ETHansen Thomas NeergaardOfficer30.0K$273.6KMay 18, 2023Morgan Stanley Smith Barney LLCSEC
May 18, 20235:22 PM ETHarms ChristopherOfficer14.7K$133.7KMay 18, 2023Morgan Stanley Smith Barney LLCSEC
May 17, 20234:49 PM ETCatherine Jen WongOfficer3.52K$31.6KMay 17, 202310b5-1Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC