Amplitude
Runs the behavioral database product and growth teams query to see how people use software.
$13.88
After-hours close−0.43 (−2.98%)
At close$14.31(+0.21%)
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Breakdown13F · Form 4
Institutions 61.61%81.86M sharesInsiders 10.75%14.29M sharesOther 27.64%36.72M shares
Shares outstanding 132.87M · Float 97.56M · 73.4% free float
Institutions13F, as of Jun 30, 2026
213 holders · 81.86M shares · 38 new positions · 119 increased · 63 reduced · 47 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Wellington Management Group LLP | 11.09M | 8.34% | −68.6K | Aug 14, 2026 |
| BlackRock, Inc. | 10.04M | 7.56% | −117.4K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 6.08M | 4.58% | −81.2K | Aug 13, 2026 |
| FMR LLC | 5.98M | 4.50% | +2.67M | Aug 13, 2026 |
| Vanguard Capital Management LLC | 3.94M | 2.97% | −151.6K | Aug 13, 2026 |
| SC US (TTGP), Ltd. | 2.80M | 2.11% | 0 | Aug 14, 2026 |
| State Street Corp | 2.60M | 1.96% | +175.4K | Aug 7, 2026 |
| Geode Capital Management, LLC | 2.48M | 1.86% | +151.5K | Aug 12, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Wellington Management Group LLP | 10.70% | 11.15M | 13G | Apr 7, 2026 ↗ |
| Vanguard Portfolio Management | 6.00% | 6.25M | 13G | Apr 28, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Spenser Skates | director, 10 percent owner, officer: CEO and President | 7.14M | 5.37% | Aug 18, 2026 |
| Nathaniel Glenn Crook | officer: Chief Commercial Officer | 1.92M | 1.45% | Aug 18, 2026 |
| Thomas Neergaard Hansen | officer: President | 1.85M | 1.39% | Feb 17, 2026 |
| Andrew Casey | officer: Chief Financial Officer | 1.36M | 1.03% | Aug 18, 2026 |
| Curtis Liu | director, 10 percent owner, officer: Chief Technology Officer | 1.13M | 0.85% | Aug 18, 2026 |
| Tien Tzuo | director | 197.3K | 0.15% | Jul 7, 2026 |
| James M. Whitehurst | director | 187.2K | 0.14% | Jun 11, 2026 |
| Erica Schultz | director | 143.1K | 0.11% | Jul 7, 2026 |
| Catherine Wong | director | 111.5K | 0.08% | Jun 15, 2026 |
| Ronald S. Gill | director | 99.5K | 0.07% | Jun 11, 2026 |
13 ten-percent owners hold 11.06M shares by Form 4, outside the officers-and-directors figure above · 12 people have not refiled in the last 18 months (16.96M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jun 1, 2026 | Curtis Liudirector, 10 percent owner, officer: Chief Technology Officer | Sale | 22,786 | $8.03 | 1,004,194 |
| Jun 12, 2026 | Catherine Wongdirector | Sale | 7,453 | $6.79 | 111,462 |
| May 4, 2026 | Curtis Liudirector, 10 percent owner, officer: Chief Technology Officer | Sale | 17,586 | $8.12 | 1,067,259 |
| Mar 6, 2026 | Curtis Liudirector, 10 percent owner, officer: Chief Technology Officer | Sale | 33,201 | $8.01 | 603,756 |
| Mar 5, 2026 | Curtis Liudirector, 10 percent owner, officer: Chief Technology Officer | Sale | 30,061 | $8.00 | 636,957 |
| Dec 26, 2025 | Spenser Skatesdirector, 10 percent owner, officer: Chief Executive Officer | Sale | 100 | $12.00 | 0 |
| Dec 24, 2025 | Spenser Skatesdirector, 10 percent owner, officer: Chief Executive Officer | Sale | 42,743 | $12.01 | 0 |
| Dec 15, 2025 | Erica Schultzdirector | Sale | 10,000 | $10.88 | 114,906 |
| Nov 17, 2025 | Erica Schultzdirector | Sale | 10,000 | $10.23 | 107,406 |
| Nov 11, 2025 | Spenser Skatesdirector, 10 percent owner, officer: Chief Executive Officer | Sale | 400,000 | $10.99 | 0 |
CongressHouse and Senate disclosures
Not reported.