Amplitude Inc
Ownership
Ownership Structure
Who owns Amplitude Inc (AMPL)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 93.8% of the shares are freely tradable; institutional investors hold 81.5%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Wellington Management Company LLP | 8.87 | 11,086,006 | -0.6 | 06/30/2026 |
| BlackRock Inc | 8.14 | 10,162,138 | +3.9 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.94 | 6,165,091 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.28 | 4,091,320 | +0.0 | 03/31/2026 |
| FMR Inc | 2.65 | 3,311,284 | +642.1 | 03/31/2026 |
| SC US (TTGP), LTD. | 2.24 | 2,798,951 | +0.0 | 06/30/2026 |
| Nuveen, LLC | 2.05 | 2,554,774 | -3.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Select Software & IT Svcs Port | 3.80 | 4,743,676 | -20.2 | 07/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.21 | 2,764,927 | +0.0 | 07/31/2026 |
| iShares Russell 2000 ETF | 2.00 | 2,498,158 | -0.6 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Crook Nathaniel Glenn | Chief Commercial Officer | 1,622,696 | 22,393,205 $ | Sep 4, 2026 | direct |
| Casey Andrew | Chief Financial Officer | 1,363,338 | 18,814,064 $ | Aug 17, 2026 | direct |
| Skates Spenser | CEO and President | 1,231,188 | 16,990,394 $ | Aug 17, 2026 | both |
| Liu Curtis | Chief Technology Officer | 950,316 | 13,114,361 $ | Aug 17, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 10, 2026 | Skates Spenser | CEO and President | Sell | 185,000 | 12.30 | 2,275,611 |
| Sep 10, 2026 | Skates Spenser | CEO and President | Other | 185,000 | 0.00 | – |
| Sep 4, 2026 | Crook Nathaniel Glenn | Chief Commercial Officer | Sell | 300,000 | 12.99 | 3,897,750 |
| Aug 17, 2026 | Liu Curtis | Chief Technology Officer | Other | 53,878 | 13.03 | 702,030 |
| Aug 17, 2026 | Skates Spenser | CEO and President | Other | 52,369 | 13.03 | 682,368 |
| Aug 17, 2026 | Crook Nathaniel Glenn | Chief Commercial Officer | Other | 109,368 | 13.03 | 1,425,065 |
| Aug 17, 2026 | Casey Andrew | Chief Financial Officer | Other | 72,814 | 13.03 | 948,766 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.