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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
Aug 6, 202610:14 AM ETFMR LLCand 1 other13G5.80%5.98M shares+2.50 ppfrom 3.30%Jun 30, 2026SEC
Jul 27, 20264:25 PM ETBlackRock, Inc.13G/A7.60%7.94M shares–Jun 30, 2026SEC
May 18, 20261:22 PM ETAlliancebernstein L.P.13G/A0.30%317.6K shares−5.60 ppfrom 5.90%Below 5%Mar 31, 2026SEC
Apr 28, 20264:09 PM ETVanguard Portfolio Management LLC13G6.00%6.25M sharesNewMar 31, 2026SEC
Apr 7, 20267:58 AM ETWellington Management Group LLPand 3 others13G10.70%11.2M shares0.00 ppfrom 10.70%Mar 31, 2026SEC
Apr 7, 20267:57 AM ETWellington Management Group LLPand 3 others13G10.70%11.2M sharesNewMar 31, 2026SEC
Mar 26, 20263:41 PM ETVanguard Group Inc13G/A0.00%0 shares−10.44 ppfrom 10.44%Below 5%Mar 13, 2026SEC
Feb 17, 202610:28 AM ETT. Rowe Price Investment Management, Inc.13G/A0.00%441 shares−5.00 ppfrom 5.00%Below 5%Dec 31, 2025SEC
Jan 7, 20262:59 PM ETVanguard Group Inc13G/A10.44%10.8M shares–Dec 31, 2025SEC
Nov 14, 202512:18 PM ETT. Rowe Price Investment Management, Inc.13G/A5.00%5.07M shares–Sep 30, 2025SEC
Nov 14, 202511:59 AM ETAlliancebernstein L.P.13G5.90%6.03M sharesNewSep 30, 2025SEC
Aug 11, 202510:50 AM ETGIC Private Ltdand 2 others13G/A4.80%4.98M shares–Below 5%Jun 30, 2025SEC
Aug 6, 202511:51 AM ETFMR LLCand 1 other13G/A3.30%3.29M shares−4.30 ppfrom 7.60%Below 5%Jun 30, 2025SEC
May 15, 20254:46 PM ETBattery Ventures XI-A, L.P.and 19 others13G/A4.70%4.67M shares–Below 5%Mar 31, 2025SEC
May 12, 202510:24 AM ETFMR LLCand 1 other13G/A7.60%7.31M shares–Mar 31, 2025SEC
Feb 25, 20259:23 PM ETSC US (TTGP), Ltd.and 12 others13D/A9.90%10.2M shares–Feb 20, 2025SEC
Nov 14, 2024T. Rowe Price Investment Management, Inc.13G/AOld format–––SEC
Nov 13, 2024Liu Curtis13G/AOld format–––SEC
Nov 13, 2024Skates Spenser13G/AOld format–––SEC
Nov 12, 2024Battery Ventures XI-A, L.P.13G/AOld format–––SEC
Nov 12, 2024FMR LLC13G/AOld format–––SEC
Jun 10, 2024T. Rowe Price Investment Management, Inc.13G/AOld format–––SEC
Feb 16, 2024Soma Equity Partners LP13G/AOld format–––SEC
Feb 14, 2024T. Rowe Price Investment Management, Inc.13GOld format–New–SEC
Feb 14, 2024Skates Spenser13G/AOld format–––SEC
Feb 14, 2024Battery Ventures XI-A, L.P.13G/AOld format–––SEC
Feb 13, 2024Liu Curtis13G/AOld format–––SEC
Feb 13, 2024Institutional Venture Partners XV, L.P.13G/AOld format–––SEC
Feb 13, 2024Vanguard Group Inc13G/AOld format–––SEC
Feb 13, 2024Benchmark Capital Partners VIII, L.P.13G/AOld format–––SEC
Feb 9, 2024FMR LLC13GOld format–––SEC
Jan 29, 20243:26 PM ETBlackRock Inc.13GOld format–––SEC
Nov 14, 2023SC US (TTGP), Ltd.13D/AOld format–––SEC
Mar 8, 20232:19 PM ETBlackRock Inc.13G/AOld format–––SEC
Feb 22, 2023SC US (TTGP), Ltd.13D/AOld format–––SEC
Feb 14, 2023Institutional Venture Partners XV, L.P.13G/AOld format–––SEC
Feb 14, 2023Benchmark Capital Partners VIII, L.P.13G/AOld format–––SEC
Feb 14, 2023Battery Ventures XI-A, L.P.13G/AOld format–––SEC
Feb 13, 2023Skates Spenser13G/AOld format–––SEC
Feb 13, 2023Liu Curtis13G/AOld format–––SEC
Feb 13, 2023GIC Private Ltd13G/AOld format–––SEC
Feb 13, 2023Soma Equity Partners LP13GOld format–New–SEC
Feb 9, 2023Vanguard Group Inc13G/AOld format–––SEC
Feb 3, 202312:09 PM ETBlackRock Inc.13GOld format–New–SEC
Aug 10, 2022SC US (TTGP), Ltd.13D/AOld format–––SEC
May 2, 2022SC US (TTGP), Ltd.13D/AOld format–––SEC
Mar 10, 2022FMR LLC13G/AOld format–––SEC
Mar 7, 2022SC US (TTGP), Ltd.13DOld format–––SEC
Feb 14, 2022Skates Spenser13GOld format–New–SEC
Feb 14, 2022SC US (TTGP), Ltd.13GOld format–New–SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Amplitude, Inc. shares.

No Form 144 notices for Amplitude, Inc. are on file.