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 8 sales; 203 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.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Wellington Management Group LLP | 13G | 10.70%11.2M shares | 0.00 ppfrom 10.70% | Apr 7, 20262 filings | Apr 7, 2026 | SEC |
| SC US (TTGP), Ltd. | 13D/A | 9.90%10.2M shares | – | Feb 14, 20227 filings | Feb 25, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 7.60%7.94M shares | – | Jul 27, 20261 filing | Jul 27, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 6.00%6.25M shares | New | Apr 28, 20261 filing | Apr 28, 2026 | SEC |
| FMR LLC | 13G | 5.80%5.98M shares | +2.50 ppfrom 3.30% | Feb 9, 20228 filings | Aug 6, 2026 | SEC |
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.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 6, 202610:14 AM ET | FMR LLCand 1 other | 13G | 5.80%5.98M shares | +2.50 ppfrom 3.30% | Jun 30, 2026 | SEC |
| Jul 27, 20264:25 PM ET | BlackRock, Inc. | 13G/A | 7.60%7.94M shares | – | Jun 30, 2026 | SEC |
| May 18, 20261:22 PM ET | Alliancebernstein L.P. | 13G/A | 0.30%317.6K shares | −5.60 ppfrom 5.90%Below 5% | Mar 31, 2026 | SEC |
| Apr 28, 20264:09 PM ET | Vanguard Portfolio Management LLC | 13G | 6.00%6.25M shares | New | Mar 31, 2026 | SEC |
| Apr 7, 20267:58 AM ET | Wellington Management Group LLPand 3 others | 13G | 10.70%11.2M shares | 0.00 ppfrom 10.70% | Mar 31, 2026 | SEC |
| Apr 7, 20267:57 AM ET | Wellington Management Group LLPand 3 others | 13G | 10.70%11.2M shares | New | Mar 31, 2026 | SEC |
| Mar 26, 20263:41 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −10.44 ppfrom 10.44%Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 202610:28 AM ET | T. Rowe Price Investment Management, Inc. | 13G/A | 0.00%441 shares | −5.00 ppfrom 5.00%Below 5% | Dec 31, 2025 | SEC |
| Jan 7, 20262:59 PM ET | Vanguard Group Inc | 13G/A | 10.44%10.8M shares | – | Dec 31, 2025 | SEC |
| Nov 14, 202512:18 PM ET | T. Rowe Price Investment Management, Inc. | 13G/A | 5.00%5.07M shares | – | Sep 30, 2025 | SEC |
| Nov 14, 202511:59 AM ET | Alliancebernstein L.P. | 13G | 5.90%6.03M shares | New | Sep 30, 2025 | SEC |
| Aug 11, 202510:50 AM ET | GIC Private Ltdand 2 others | 13G/A | 4.80%4.98M shares | –Below 5% | Jun 30, 2025 | SEC |
| Aug 6, 202511:51 AM ET | FMR LLCand 1 other | 13G/A | 3.30%3.29M shares | −4.30 ppfrom 7.60%Below 5% | Jun 30, 2025 | SEC |
| May 15, 20254:46 PM ET | Battery Ventures XI-A, L.P.and 19 others | 13G/A | 4.70%4.67M shares | –Below 5% | Mar 31, 2025 | SEC |
| May 12, 202510:24 AM ET | FMR LLCand 1 other | 13G/A | 7.60%7.31M shares | – | Mar 31, 2025 | SEC |
| Feb 25, 20259:23 PM ET | SC US (TTGP), Ltd.and 12 others | 13D/A | 9.90%10.2M shares | – | Feb 20, 2025 | SEC |
| Nov 14, 2024 | T. Rowe Price Investment Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 13, 2024 | Liu Curtis | 13G/AOld format | – | – | – | SEC |
| Nov 13, 2024 | Skates Spenser | 13G/AOld format | – | – | – | SEC |
| Nov 12, 2024 | Battery Ventures XI-A, L.P. | 13G/AOld format | – | – | – | SEC |
| Nov 12, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jun 10, 2024 | T. Rowe Price Investment Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2024 | Soma Equity Partners LP | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2024 | T. Rowe Price Investment Management, Inc. | 13GOld format | – | New | – | SEC |
| Feb 14, 2024 | Skates Spenser | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2024 | Battery Ventures XI-A, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Liu Curtis | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Institutional Venture Partners XV, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Benchmark Capital Partners VIII, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | FMR LLC | 13GOld format | – | – | – | SEC |
| Jan 29, 20243:26 PM ET | BlackRock Inc. | 13GOld format | – | – | – | SEC |
| Nov 14, 2023 | SC US (TTGP), Ltd. | 13D/AOld format | – | – | – | SEC |
| Mar 8, 20232:19 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 22, 2023 | SC US (TTGP), Ltd. | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Institutional Venture Partners XV, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Benchmark Capital Partners VIII, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Battery Ventures XI-A, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Skates Spenser | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Liu Curtis | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | GIC Private Ltd | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Soma Equity Partners LP | 13GOld format | – | New | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 3, 202312:09 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
| Aug 10, 2022 | SC US (TTGP), Ltd. | 13D/AOld format | – | – | – | SEC |
| May 2, 2022 | SC US (TTGP), Ltd. | 13D/AOld format | – | – | – | SEC |
| Mar 10, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Mar 7, 2022 | SC US (TTGP), Ltd. | 13DOld format | – | – | – | SEC |
| Feb 14, 2022 | Skates Spenser | 13GOld format | – | New | – | SEC |
| Feb 14, 2022 | SC US (TTGP), Ltd. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
60 notices from officers, directors and other affiliates planning to sell Amplitude, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Nov 12, 20264:30 PM ET | Skates SpenserFamily member of an insider | 11 | $192.12 | Nov 12, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Nov 9, 20264:28 PM ET | Skates SpenserFamily member of an insider | 48 | $838.77 | Nov 9, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Nov 5, 20264:02 PM ET | Skates SpenserFamily member of an insider | 61 | $1.11K | Nov 5, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Nov 4, 20264:40 PM ET | Skates SpenserFamily member of an insider | 901 | $15.7K | Nov 4, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Oct 28, 20264:09 PM ET | Skates SpenserFamily member of an insider | 16.5K | $288.5K | Oct 28, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Oct 26, 20264:11 PM ET | Skates SpenserFamily member of an insider | 300 | $5.24K | Oct 26, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Oct 23, 20264:11 PM ET | Skates SpenserFamily member of an insider | 107.1K | $1.88M | Oct 23, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Oct 2, 20265:00 PM ET | Skates SpenserFamily member of an insider | 70.1K | $1.02M | Oct 2, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Oct 1, 20264:14 PM ET | Skates SpenserFamily member of an insider | 3.54K | $51.1K | Oct 1, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Sep 30, 20264:09 PM ET | Skates SpenserFamily member of an insider | 1.37K | $19.9K | Sep 30, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Sep 10, 20264:35 PM ET | Skates SpenserFamily member of an insider | 185.0K | $2.28M | Sep 10, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Sep 4, 20264:37 PM ET | Crook Nathaniel GlennOfficer | 300.0K | $3.90M | Sep 4, 202610b5-1 | Fidelity Brokerage Services LLC | SEC |
| Jun 12, 20264:47 PM ET | Catherine Jen WongOfficer | 7.45K | $51.3K | Jun 12, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 12, 20264:29 PM ETAmended | Liu CurtisOfficer · Director · 10% stockholder | 22.8K | $178.2K | Jun 1, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 5, 20264:32 PM ET | Curtis LiuDirector · Officer · 10% stockholder | 80.8K | $624.1K | Mar 5, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 29, 20258:29 AM ET | Anne Lee SkatesDirector · Officer · 10% stockholder | 75.0K | $870.8K | Dec 24, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 15, 20254:15 PM ET | Erica SchultzDirector | 10.0K | $112.5K | Dec 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 17, 20254:29 PM ET | Erica SchultzDirector | 10.0K | $107.3K | Nov 17, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 12, 20257:08 AM ET | Anne Lee SkatesDirector · Officer · 10% stockholder | 400.0K | $4.29M | Nov 11, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Oct 15, 20254:32 PM ET | Erica SchultzDirector | 10.0K | $101.5K | Oct 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Sep 15, 20254:28 PM ET | Erica SchultzDirector | 10.0K | $110.7K | Sep 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 15, 20254:29 PM ET | Erica SchultzDirector | 7.50K | $85.2K | Aug 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 11, 20254:24 PM ET | The Vishria Revocable TrustDirector | 25.0K | $288.3K | Aug 11, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jul 15, 20254:29 PM ET | Erica F SchultzOfficer | 7.50K | $93.4K | Jul 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 11, 20254:30 PM ET | Catherine Jen WongOfficer | 8.50K | $107.6K | Jun 11, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
Showing the latest 25. See the AMPL notices from the last 12 months