Spenser Skates
CIK: 0001882913
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Amplitude, Inc.
Discretionary Trading P&L
Holdings
Transaction History (26 total)
- Oct 28, 2026AMPL
Amplitude, Inc.
Conversion(C)Indirect6.7K shares- - Oct 28, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect6.7K shares at avg. $17.53$117K - Oct 26, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect200 shares at avg. $17.47$3K - Oct 26, 2026AMPL
Amplitude, Inc.
Conversion(C)Indirect300 shares- - Oct 26, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect100 shares at avg. $17.45$2K - Oct 23, 2026AMPL
Amplitude, Inc.
Conversion(C)Indirect107.1K shares- - Oct 23, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect107.1K shares at avg. $17.52$1.9M - Oct 2, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect70.1K shares at avg. $14.52$1.0M - Oct 2, 2026AMPL
Amplitude, Inc.
Conversion(C)Indirect70.1K shares- - Oct 1, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect3.5K shares at avg. $14.45$51K - Oct 1, 2026AMPL
Amplitude, Inc.
Conversion(C)Indirect3.5K shares- - Sep 30, 2026AMPL
Amplitude, Inc.
Conversion(C)Indirect1.4K shares- - Sep 30, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect1.4K shares at avg. $14.45$20K - Sep 10, 2026AMPL
Amplitude, Inc.
Conversion(C)Indirect185K shares- - Sep 10, 2026AMPL
Amplitude, Inc.
Sale(S)Indirect185K shares at avg. $12.30$2.3M - Aug 17, 2026AMPL
Amplitude, Inc.
Tax Payment(F)Direct52.4K shares at avg. $13.03$682K - May 15, 2026AMPL
Amplitude, Inc.
Tax Payment(F)Direct39.6K shares at avg. $6.06$240K - Apr 21, 2026AMPL
Amplitude, Inc.
Award(A)Direct1.3M shares- - Dec 26, 2025AMPL
Amplitude, Inc.
Sale(S)Indirect100 shares at avg. $12.00$1K - Dec 26, 2025AMPL
Amplitude, Inc.
Conversion(C)Indirect100 shares- - Dec 24, 2025AMPL
Amplitude, Inc.
Sale(S)Indirect42.7K shares at avg. $12.01$513K - Dec 24, 2025AMPL
Amplitude, Inc.
Conversion(C)Indirect42.7K shares- - Nov 11, 2025AMPL
Amplitude, Inc.
Conversion(C)Indirect400K shares- - Nov 11, 2025AMPL
Amplitude, Inc.
Sale(S)Indirect400K shares at avg. $10.99$4.4M - Aug 4, 2025AMPL
Amplitude, Inc.
Gift(G)DirectClass B Common Stock
1M shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 28, 2026 | AMPL Amplitude, Inc. | Conversion(C) | 6,651 | - | $0 | Indirect |
| Oct 28, 2026 | AMPL Amplitude, Inc. | Sale(S) | 6,651 | $17.53 | $116,564 | Indirect |
| Oct 26, 2026 | AMPL Amplitude, Inc. | Sale(S) | 200 | $17.47 | $3,494 | Indirect |
| Oct 26, 2026 | AMPL Amplitude, Inc. | Conversion(C) | 300 | - | $0 | Indirect |
| Oct 26, 2026 | AMPL Amplitude, Inc. | Sale(S) | 100 | $17.45 | $1,745 | Indirect |
| Oct 23, 2026 | AMPL Amplitude, Inc. | Conversion(C) | 107,136 | - | $0 | Indirect |
| Oct 23, 2026 | AMPL Amplitude, Inc. | Sale(S) | 107,136 | $17.52 | $1,876,958 | Indirect |
| Oct 2, 2026 | AMPL Amplitude, Inc. | Sale(S) | 70,087 | $14.52 | $1,017,684 | Indirect |
| Oct 2, 2026 | AMPL Amplitude, Inc. | Conversion(C) | 70,087 | - | $0 | Indirect |
| Oct 1, 2026 | AMPL Amplitude, Inc. | Sale(S) | 3,539 | $14.45 | $51,139 | Indirect |
| Oct 1, 2026 | AMPL Amplitude, Inc. | Conversion(C) | 3,539 | - | $0 | Indirect |
| Sep 30, 2026 | AMPL Amplitude, Inc. | Conversion(C) | 1,374 | - | $0 | Indirect |
| Sep 30, 2026 | AMPL Amplitude, Inc. | Sale(S) | 1,374 | $14.45 | $19,858 | Indirect |
| Sep 10, 2026 | AMPL Amplitude, Inc. | Conversion(C) | 185,000 | - | $0 | Indirect |
| Sep 10, 2026 | AMPL Amplitude, Inc. | Sale(S) | 185,000 | $12.30 | $2,275,611 | Indirect |
| Aug 17, 2026 | AMPL Amplitude, Inc. | Tax Payment(F) | 52,369 | $13.03 | $682,368 | Direct |
| May 15, 2026 | AMPL Amplitude, Inc. | Tax Payment(F) | 39,562 | $6.06 | $239,746 | Direct |
| Apr 21, 2026 | AMPL Amplitude, Inc. | Award(A) | 1,323,119 | - | $0 | Direct |
| Dec 26, 2025 | AMPL Amplitude, Inc. | Sale(S) | 100 | $12.00 | $1,200 | Indirect |
| Dec 26, 2025 | AMPL Amplitude, Inc. | Conversion(C) | 100 | - | - | Indirect |
| Dec 24, 2025 | AMPL Amplitude, Inc. | Sale(S) | 42,743 | $12.01 | $513,433 | Indirect |
| Dec 24, 2025 | AMPL Amplitude, Inc. | Conversion(C) | 42,743 | - | - | Indirect |
| Nov 11, 2025 | AMPL Amplitude, Inc. | Conversion(C) | 400,000 | - | - | Indirect |
| Nov 11, 2025 | AMPL Amplitude, Inc. | Sale(S) | 400,000 | $10.99 | $4,395,320 | Indirect |
| Aug 4, 2025 | AMPL Amplitude, Inc. | Gift(G) Class B Common Stock | 1,010,000 | - | - | Direct |
1-25 of 26 transactions
About Skates Spenser
Skates Spenser (SEC CIK 0001882913) files insider reports with the SEC as CEO and President of Amplitude, Inc. (AMPL).
Signal8 holds 12 ownership filings by Skates Spenser, all Form 4s, filed between Aug 6, 2025 and Oct 28, 2026. Those filings report 26 transactions, from Aug 4, 2025 to Oct 28, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Skates Spenser's filings is in SAN FRANCISCO, CA.
Recent filings by Skates Spenser
- Oct 28, 2026: Conversion of AMPL shares (Form 4, code C).
- Oct 28, 2026: Open-market sale of AMPL shares (Form 4, code S).
- Oct 26, 2026: Open-market sale of AMPL shares (Form 4, code S).
- Oct 26, 2026: Conversion of AMPL shares (Form 4, code C).
- Oct 26, 2026: Open-market sale of AMPL shares (Form 4, code S).
Other insiders filing for Amplitude, Inc. (AMPL)
- Raji Vijaye Ganesh, Director
- Schultz Erica, Director
- Tzuo Tien, Director
- Crook Nathaniel Glenn, Chief Commercial Officer
- Liu Curtis, Chief Technology Officer
- Casey Andrew, Chief Financial Officer