Amplitude, Inc.
Total Trades
64
Buys
4
Sells
52
Largest Trade
$1M+
Insiders
19
Institutional Funds
156
Inst. Value
$1M+
Activist Filings
45
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Hu An-Yen | 10% Owner | SELL | $100K–$500K | 7K | $16.96 | Aug 10, 2022 |
| Sarkis Ninos | Chief Accounting O… | SELL | $1K–$15K | 511 | $16.98 | May 19, 2022 |
| Wong Catherine | Director | SELL | $50K–$100K | 4K | $17.12 | May 19, 2022 |
| SC US (TTGP), LTD. | 10% Owner | BUY | $1M+ | 2.6M | $19.48 | Feb 24, 2022 |
| Grady Patrick W | Director | BUY | $1M+ | 2.6M | $19.48 | Feb 24, 2022 |
| Wong Catherine | Director | SELL | $50K–$100K | 4K | $19.66 | Feb 23, 2022 |
| Heinz Matthew | Chief Revenue Offi… | SELL | $100K–$500K | 8K | $45.09 | Feb 15, 2022 |
| Heinz Matthew | Chief Revenue Offi… | EXERCISE | $15K–$50K | 8K | $2.26 | Feb 15, 2022 |
| Heinz Matthew | Chief Revenue Offi… | SELL | $100K–$500K | 8K | $45.39 | Jan 14, 2022 |
| Heinz Matthew | Chief Revenue Offi… | EXERCISE | $15K–$50K | 8K | $2.26 | Jan 14, 2022 |
| Johnson Jennifer L. | See remarks | SELL | $1M+ | 75K | $54.32 | Jan 4, 2022 |
| Johnson Jennifer L. | See remarks | EXERCISE | $100K–$500K | 75K | $4.19 | Jan 4, 2022 |
| Vuong Hoang | CFO | EXERCISE | $15K–$50K | 7K | $2.26 | Jan 4, 2022 |
| Vuong Hoang | CFO | SELL | $15K–$50K | 620 | $54.32 | Jan 4, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 156 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| ALLIANCEBERNSTEIN L.P. | 6.2M | $1M+ | SH |
| Point72 Asset Management, L.P. | 3.5M | $1M+ | SH |
| SC US (TTGP), LTD. | 2.6M | $1M+ | SH |
| TimesSquare Capital Management, LLC | 2.5M | $1M+ | SH |
| STATE STREET CORP | 2.3M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9M | $1M+ | SH |
| LIGHT STREET CAPITAL MANAGEMENT, LLC | 1.5M | $1M+ | SH |
| ArrowMark Colorado Holdings LLC | 1.5M | $1M+ | SH |
| Squarepoint Ops LLC | 968K | $1M+ | SH |
| GOLDMAN SACHS GROUP INC | 849K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 778K | $1M+ | SH |
| Toronado Partners, LLC | 776K | $1M+ | SH |
| GAGNON SECURITIES LLC | 699K | $1M+ | SH |
| BAILLIE GIFFORD & CO | 694K | $1M+ | SH |
| VANGUARD GROUP INC | 639K | $1M+ | SH |
| Portolan Capital Management, LLC | 560K | $1M+ | SH |
| ACADIAN ASSET MANAGEMENT LLC | 532K | $1M+ | SH |
| WESTERLY CAPITAL MANAGEMENT, LLC | 500K | $1M+ | SH |
| Gagnon Advisors, LLC | 457K | $1M+ | SH |
| Cerity Partners LLC | 454K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Jan 7, 2026
10.4%
10.8M shares
T. Rowe Price Investment Management, Inc.
SC 13G/A · Nov 14, 2025
5.0%
5.1M shares
SC 13G · Nov 14, 2025
5.9%
6.0M shares
SC 13G/A · Aug 11, 2025
4.8%
5.0M shares
SC 13G/A · Aug 6, 2025
3.3%
3.3M shares
SC 13G/A · May 15, 2025
1.6%
1.6M shares
SC 13G/A · May 12, 2025
7.6%
7.3M shares
SEQUOIA CAPITAL GLOBAL GROWTH FUND III - ENDURANCE PARTNERS, L.P. ("SC GGF III")
SC 13D/A · Feb 26, 2025
2.6%
2.6M shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G/A · Nov 14, 2024
9.1%
8.2M shares
SC 13G/A · Nov 14, 2024
7.9%
809.5M shares
SC 13G/A · Nov 13, 2024
8.0%
820.0M shares
SC 13G/A · Nov 12, 2024
3.0%
2.8M shares
SC 13G/A · Nov 12, 2024
8.9%
8.1M shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G/A · Jun 10, 2024
10.1%
8.9M shares
SC 13G/A · Feb 16, 2024
0.0%
0 shares
SC 13G/A · Feb 14, 2024
8.8%
8.2M shares
SC 13G/A · Feb 14, 2024
4.0%
3.3M shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G · Feb 14, 2024
8.2%
6.9M shares
Institutional Venture Partners XV, L.P.
SC 13G/A · Feb 13, 2024
2.3%
1.9M shares
SC 13G/A · Feb 13, 2024
8.6%
809.5M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
9.4%
7.8M shares
Benchmark Capital Partners VIII, L.P. (“BCP VIII”)
SC 13G/A · Feb 13, 2024
3.2%
2.8M shares
SC 13G · Jan 29, 2024
6.2%
5.2M shares
SEQUOIA CAPITAL GLOBAL GROWTH FUND III – ENDURANCE PARTNERS, L.P. (“SC GGF III”)
SC 13D/A · Nov 14, 2023
3.0%
2.6M shares
SC 13G/A · Mar 8, 2023
4.6%
3.5M shares
SEQUOIA CAPITAL GLOBAL GROWTH FUND III – ENDURANCE PARTNERS, L.P. (“SC GGF III”)
SC 13D/A · Feb 22, 2023
3.2%
2.6M shares
Institutional Venture Partners XV, L.P.
SC 13G/A · Feb 14, 2023
8.2%
5.7M shares
Benchmark Capital Partners VIII, L.P. (“BCP VIII”)
SC 13G/A · Feb 14, 2023
6.4%
4.7M shares
Battery Ventures XI-A, L.P. (“BV11-A”)
SC 13G/A · Feb 14, 2023
6.0%
4.1M shares
SC 13G/A · Feb 13, 2023
9.7%
8.2M shares
SC 13G/A · Feb 13, 2023
9.6%
8.1M shares
SC 13G/A · Feb 13, 2023
7.9%
5.8M shares
SC 13G · Feb 13, 2023
5.1%
3.5M shares
SC 13G · Feb 3, 2023
5.2%
3.6M shares
SEQUOIA CAPITAL GLOBAL GROWTH FUND III – ENDURANCE PARTNERS, L.P. (“SC GGF III”)
SC 13D/A · Aug 10, 2022
3.7%
2.6M shares
SEQUOIA CAPITAL GLOBAL GROWTH FUND III – ENDURANCE PARTNERS, L.P. (“SC GGF III”)
SC 13D/A · May 2, 2022
4.1%
2.6M shares
SC 13G/A · Mar 10, 2022
2.2%
1.3M shares
SEQUOIA CAPITAL GLOBAL GROWTH FUND III – ENDURANCE PARTNERS, L.P. (“SC GGF III”)
SC 13D · Mar 4, 2022
4.5%
2.6M shares
SC 13G · Feb 14, 2022
12.2%
8.2M shares
Battery Ventures XI-A, L.P. (“BV11-A”)
SC 13G · Feb 14, 2022
6.4%
4.1M shares
SC 13G · Feb 14, 2022
4.5%
2.6M shares
SC 13G · Feb 14, 2022
12.1%
8.0M shares
Institutional Venture Partners XV, L.P.
SC 13G · Feb 14, 2022
10.5%
5.7M shares
Benchmark Capital Partners VIII, L.P. (“BCP VIII”)
SC 13G · Feb 14, 2022
11.6%
7.1M shares
SC 13G · Feb 12, 2022
8.5%
5.0M shares