Spenser Skates

Insider Reports History

Reporting-owner location: San Francisco, CA
Latest reporting-owner signature: /s/ Elizabeth Fisher, as attorney in fact for Spenser Skates
Source: Latest parsed Forms 3/4/5 signature
Transaction source note: Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Spenser Skates

Form 4 holding CEO and President, Director, 10%+ Owner

Amplitude, Inc.

Security class: Class B Common Stock
Shares / value: 5,342,146
Estimated value: $73,988,722
Report date: 09 Nov 2026
Price: $13.85
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 5,342,146

Form 4 holding CEO and President, Director, 10%+ Owner

Amplitude, Inc.

Security class: Class A Common Stock
Shares / value: 1,231,188
Estimated value: $9,418,588
Report date: 17 Aug 2026
Price: $7.65
Ownership: Direct

Form 4 holding CEO and President, Director, 10%+ Owner

Amplitude, Inc.

Security class: Class B Common Stock
Shares / value: 192,060
Estimated value: $2,660,031
Report date: 09 Nov 2026
Price: $13.85
Ownership: By Spouse
Underlying class: Class A Common Stock
Underlying amount: 192,060

Form 4 holding CEO and President, Director, 10%+ Owner

Amplitude, Inc.

Security class: Class A Common Stock
Shares / value: 0
Estimated value: $0
Report date: 09 Nov 2026
Price: $17.47
Ownership: By Spouse

Insider Reports Filed by Spenser Skates

4 AMPL

Amplitude, Inc.

Report period: 09 Nov 2026
Transactions: 3
Transaction value: -$839
Accepted by SEC: 12 Nov 2026, 16:25
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 04 Nov 2026
Transactions: 7
Transaction value: -$16,840
Accepted by SEC: 06 Nov 2026, 16:40
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 26 Oct 2026
Transactions: 7
Transaction value: -$121,803
Accepted by SEC: 28 Oct 2026, 17:45
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 23 Oct 2026
Transactions: 3
Transaction value: -$1,876,958
Accepted by SEC: 27 Oct 2026, 16:45
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 02 Oct 2026
Transactions: 3
Transaction value: -$1,017,684
Accepted by SEC: 06 Oct 2026, 16:17
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 30 Sep 2026
Transactions: 6
Transaction value: -$70,997
Accepted by SEC: 02 Oct 2026, 18:44
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 10 Sep 2026
Transactions: 3
Transaction value: -$2,275,611
Accepted by SEC: 14 Sep 2026, 16:59
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 17 Aug 2026
Transactions: 1
Transaction value: $0
Accepted by SEC: 18 Aug 2026, 17:18
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 15 May 2026
Transactions: 1
Transaction value: $0
Accepted by SEC: 19 May 2026, 16:27
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 21 Apr 2026
Transactions: 1
Transaction value: $0
Accepted by SEC: 22 Apr 2026, 17:11
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 26 Dec 2025
Transactions: 3
Transaction value: -$1,200
Accepted by SEC: 30 Dec 2025, 18:04
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 24 Dec 2025
Transactions: 3
Transaction value: -$513,433
Accepted by SEC: 29 Dec 2025, 17:08
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 11 Nov 2025
Transactions: 3
Transaction value: -$4,395,320
Accepted by SEC: 13 Nov 2025, 17:12
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 04 Aug 2025
Transactions: 2
Transaction value: $0
Accepted by SEC: 06 Aug 2025, 17:57
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 18 Feb 2022
Transactions: 8
Transaction value: +$419,000
Accepted by SEC: 23 Feb 2022, 17:17
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 13 Dec 2021
Transactions: 3
Transaction value: $0
Accepted by SEC: 15 Dec 2021, 18:06
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 01 Oct 2021
Transactions: 1
Transaction value: -$1,355,700
Accepted by SEC: 05 Oct 2021, 16:05
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 28 Sep 2021
Transactions: 2
Transaction value: -$28,800,000
Accepted by SEC: 30 Sep 2021, 19:16
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

3 AMPL

Amplitude, Inc.

Report period: 21 Sep 2021
Transactions: 0
Transaction value: $0
Accepted by SEC: 21 Sep 2021, 18:00
Role: Chief Executive Officer, Director
Next action: Open filing details

4 AMPL

Amplitude, Inc.

Report period: 30 Aug 2021
Transactions: 6
Transaction value: -$8,999,982
Accepted by SEC: 23 Sep 2021, 21:30
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

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