Amplitude, Inc. (AMPL) Insider Trading
Over the last 3 months, AMPL insiders made 0 open-market buys and 2 sales, a net sale of -$233K (SEC Form 4). Over the last 6 months, 147 institutions increased and 140 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
2
Net (3m)
-$233.5K
Insider trades by month Buys Sells
Oct
Nov
Dec
Mar
May
Jun
Context3-month price +60.4%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | Casey Andrewofficer: Chief Financial Officer | Tax | 72,814 | $13.03 |
| Aug 18, 2026 | Crook Nathaniel Glennofficer: Chief Commercial Officer | Tax | 109,368 | $13.03 |
| Aug 18, 2026 | Skates Spenserdirector, 10 percent owner, officer: CEO and President | Tax | 52,369 | $13.03 |
| Aug 18, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Tax | 53,878 | $13.03 |
| Jul 7, 2026 | Tzuo Tiendirector | Grant | 1,521 | — |
| Jul 7, 2026 | Schultz Ericadirector | Grant | 1,659 | — |
| Jun 16, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Sell | 22,786 | $8.03 |
| Jun 15, 2026 | Wong Catherinedirector | Sell | 7,453 | $6.79 |
| Jun 11, 2026 | Gill Ronald Sdirector | Grant | 24,857 | — |
| Jun 11, 2026 | Grady Patrick Wdirector, 10 percent owner: | Grant | 24,857 | — |
| Jun 11, 2026 | Schultz Ericadirector | Grant | 24,857 | — |
| Jun 11, 2026 | Wong Catherinedirector | Grant | 24,857 | — |
| Jun 11, 2026 | Whitehurst James Mdirector | Grant | 24,857 | — |
| May 19, 2026 | Casey Andrewofficer: Chief Financial Officer | Tax | 64,872 | $6.06 |
| May 19, 2026 | Skates Spenserdirector, 10 percent owner, officer: CEO and President | Tax | 39,562 | $6.06 |
| May 19, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Tax | 40,279 | $6.06 |
| May 19, 2026 | Crook Nathaniel Glennofficer: Chief Commercial Officer | Tax | 101,292 | $6.06 |
| May 6, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Sell | 17,586 | $8.12 |
| Apr 22, 2026 | Skates Spenserdirector, 10 percent owner, officer: CEO and President | Grant | 1,323,119 | — |
| Apr 17, 2026 | Casey Andrewofficer: Chief Financial Officer | Grant | 431,754 | — |
| Apr 17, 2026 | Crook Nathaniel Glennofficer: Chief Commercial Officer | Grant | 278,551 | — |
| Apr 17, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Grant | 417,827 | — |
| Apr 17, 2026 | Crook Nathaniel Glennofficer: Chief Commercial Officer | Grant | 974,930 | — |
| Apr 7, 2026 | Schultz Ericadirector | Grant | 1,678 | — |
| Apr 7, 2026 | Tzuo Tiendirector | Grant | 1,538 | — |
| Mar 10, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Sell | 33,201 | $8.01 |
| Mar 9, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Sell | 30,061 | $8.00 |
| Feb 17, 2026 | Casey Andrewofficer: Chief Financial Officer | Tax | 39,438 | $6.34 |
| Feb 17, 2026 | HANSEN THOMAS NEERGAARDofficer: President | Tax | 69,142 | $6.34 |
| Feb 17, 2026 | Liu Curtisdirector, 10 percent owner, officer: Chief Technology Officer | Tax | 26,672 | $6.34 |
Source: AMPL SEC Form 4 filings, latest Aug 18, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their AMPL positions over the last 6 months (SEC Form 13F).
Increased
147
New positions
84
Reduced
140
Sold out
48
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 11.2M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 11.1M | Aug 14, 2026 |
| BLACKROCK, INC. | Increased | 10.2M | May 13, 2026 |
| BlackRock, Inc. | Reduced | 10.0M | Aug 7, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 6.2M | May 8, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 6.1M | Aug 13, 2026 |
| FMR LLC | Increased | 6.0M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 4.1M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 3.9M | Aug 13, 2026 |
| FMR LLC | Increased | 3.3M | May 15, 2026 |
| SC US (TTGP), LTD. | Unchanged | 2.8M | Aug 14, 2026 |
| SC US (TTGP), LTD. | Unchanged | 2.8M | May 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | Reduced | 2.7M | May 15, 2026 |
| BAILLIE GIFFORD & CO | Reduced | 2.6M | May 8, 2026 |
| STATE STREET CORP | Increased | 2.6M | Aug 7, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.