Amplitude, Inc. (AMPL)
Nasdaq: AMPL · Services-Prepackaged Software · San Francisco, CA · filing with the SEC since 2021
Grade4.9
◀ Past 5.9● Present 4.7▶ Future 4.5
Who owns Amplitude, Inc.
As filed with the SECHolders of 5% or more
5
Wellington Management Group LLP holds 10.7% of Common Stock, as its SCHEDULE 13G filed Apr 7, 2026 says.
Directors and officers
12
report now, of 22 people on the record since 2021. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 5 named at left.
Holders of 5% or moreshare of the class, as filed
Wellington Management Group LLP
SCHEDULE 13G · filed Apr 7, 2026 · Common Stock · 10.7% in Apr 7, 2026
Sc Us (Ttgp), Ltd. ("sc Us (Ttgp)")
SCHEDULE 13D/A · filed Feb 25, 2025 · Class A Common Stock, par value $0.00001 per share
Blackrock, Inc.
SCHEDULE 13G/A · filed Jul 27, 2026 · Class A Stock
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 28, 2026 · Common Stock
Fmr LLC
SCHEDULE 13G · filed Aug 6, 2026 · CLASS A COMMON STOCK · 3.3% in Aug 6, 2025
GIC Private Ltd
SCHEDULE 13G/A · filed Aug 11, 2025 · Class A common stock, $0.00001 par value per share · reported falling below 5%
Neeraj Agrawal
SCHEDULE 13G/A · filed May 15, 2025 · Class A Common Stock, $0.00001 par value per share · reported falling below 5%
AllianceBernstein L.P.
SCHEDULE 13G/A · filed May 18, 2026 · Common Stock · reported falling below 5%, from 5.9% in Nov 14, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 10.4% in Jan 7, 2026
T. Rowe Price Investment Management, Inc.
SCHEDULE 13G/A · filed Feb 17, 2026 · COMMON STOCK · reported falling below 5%, from 5% in Nov 14, 2025
What AMPL reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Kraftful Inc
A company bought · acquisition · Jun 2025 · owns, named in the 10-K filed Feb 19, 2026
InfiniGrow Acquisition
A company bought · acquisition · owns, named in the 10-K filed Feb 19, 2026
9 subsidiaries in 8 countries, from the list filed with the 10-K filed Feb 20, 2024.
Insider tradesForm 4
23sales
0purchases
23sales on a scheduled plan
5people selling
$11.1Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 12, 2025 to Nov 12, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 12, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window5 of 42 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Skates Spenser | CEO and President | 14 | $5.9M | 14 | 0 | $0 |
| Crook Nathaniel Glenn | Chief Commercial Officer | 1 | $3.9M | 1 | 0 | $0 |
| Liu Curtis | Chief Technology Officer | 5 | $1.0M | 5 | 0 | $0 |
| Schultz Erica | director | 2 | $200,000 | 2 | 0 | $0 |
| Wong Catherine | director | 1 | $100,000 | 1 | 0 | $0 |