Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Amplitude, Inc.AMPL · Entity 4566 | Chief Financial Officer | August 17, 2026 | August 18, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Amplitude, Inc.
Report date August 17, 2026 · Filed August 18, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Common StockSEC Table I · non-derivative | Direct | 1,363,338 |
Reported balance
After 2026-08-17 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-08-17 · Tax withholding · Disposed 72,814 · Balance 1,363,338 F1: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on August 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the Reporting Person. F2: Includes 814,949 RSUs. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on August 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the Reporting Person.
F2: Includes 814,949 RSUs.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| August 17, 2026 Filed Aug 18, 2026 21:14 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 72,814 | $13.03 | $948,766.42 |
DisclosureSEC source: 0001866692-26-000010 · form4.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,363,338 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on August 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the Reporting Person. F2 · balance_after: Includes 814,949 RSUs. Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:27 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 64,872 | $6.06 | $393,124.32 |
DisclosureSEC source: 0002032390-26-000006 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,436,152 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on May 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the Reporting Person. F2 · balance_after: Includes 958,054 RSUs. F3 · balance_after: Includes 2,500 shares acquired under the Issuer's employee stock purchase plan on May 14, 2026. Read SEC document |
| April 15, 2026 Filed Apr 17, 2026 21:54 UTC | Amplitude, Inc. AMPL · Entity 4566 | GrantClass A Common Stock | 431,754 | $0.00 | $0.00 |
DisclosureSEC source: 0002032390-26-000004 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,498,524 F1 · shares: Each restricted stock unit ("RSU") represents a right to receive one share of the Issuer's Class A Common Stock. The RSUs vest in twelve substantially equal quarterly installments beginning on May 15, 2026, subject to the continued service of the reporting person through each vesting date. F2 · balance_after: Includes 1,101,159 RSUs. Read SEC document |
| February 15, 2026 Filed Feb 17, 2026 21:34 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 39,438 | $6.34 | $250,036.92 |
DisclosureSEC source: 0002032390-26-000002 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,066,770 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on February 15, 2026, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the reporting person. F2 · balance_after: Includes 669,405 RSUs. Read SEC document |
| November 15, 2025 Filed Nov 18, 2025 22:17 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 54,400 | $10.73 | $583,712.00 |
DisclosureSEC source: 0002032390-25-000006 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,106,208 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on November 15, 2025, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the reporting person. F2 · balance_after: Includes 1,140,440 RSUs. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 22:16 UTC | Amplitude, Inc. AMPL · Entity 4566 | PurchaseClass A Common Stock | 30,000 | $9.99 | $299,790.00 |
DisclosureSEC source: 0002032390-25-000004 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,160,608 F1 · price: This transaction was executed in multiple trades at prices ranging from $9.90 to $10.07, inclusive. The price reported in Column 4 above reflects the weighted average price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares purchased at each respective price within the range set forth in this footnote. F2 · balance_after: Includes 883,657 RSUs. F3 · balance_after: Includes 2,500 shares acquired under the Issuer's employee stock purchase plan on May 14, 2025. Read SEC document |
| August 15, 2025 Filed Aug 19, 2025 21:44 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 54,399 | $11.47 | $623,956.53 |
DisclosureSEC source: 0001562180-25-005898 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,128,108 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on August 15, 2025, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the reporting person. F2 · balance_after: Includes 883,657 RSUs. Read SEC document |
| May 15, 2025 Filed May 19, 2025 21:22 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 54,399 | $12.14 | $660,403.86 |
DisclosureSEC source: 0001562180-25-004002 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,182,507 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on May 15, 2025, from the vesting of restricted stock units ("RSUs"), and does not represent a sale by the reporting person. F2 · balance_after: Includes 990,782 RSUs. Read SEC document |
| April 25, 2025 Filed Apr 29, 2025 20:59 UTC | Amplitude, Inc. AMPL · Entity 4566 | GrantClass A Common Stock | 159,914 | $0.00 | $0.00 |
DisclosureSEC source: 0001562180-25-003351 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,236,906 F1 · shares: Each restricted stock unit ("RSU") represents a right to receive one share of the Issuer's Class A Common Stock. The RSUs vest in twelve substantially equal quarterly installments beginning on May 15, 2025, subject to the continued service of the reporting person through each vesting date. F2 · balance_after: Includes 1,097,907 RSUs. Read SEC document |
| March 13, 2025 Filed Mar 17, 2025 20:34 UTC | Amplitude, Inc. AMPL · Entity 4566 | PurchaseClass A Common Stock | 21,000 | $11.42 | $239,765.40 |
DisclosureSEC source: 0001562180-25-002468 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,076,992 F1 · price: This transaction was executed in multiple trades at prices ranging from $11.27 to $11.52, inclusive. The price reported in Column 4 above reflects the weighted average price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares purchased at each respective price within the range set forth in this footnote. F2 · balance_after: Includes 937,993 restricted stock units. Read SEC document |
| February 15, 2025 Filed Feb 18, 2025 21:30 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 35,748 | $12.04 | $430,405.92 |
DisclosureSEC source: 0001562180-25-001239 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,055,992 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on February 15, 2025, from the vesting of RSUs, and does not represent a sale by the reporting person. F2 · balance_after: Includes 937,993 RSUs. Read SEC document |
| November 15, 2024 Filed Nov 19, 2024 21:42 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 33,852 | $9.59 | $324,640.68 |
DisclosureSEC source: 0001562180-24-007799 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,091,740 F1 · kind: Represents shares of the Issuer's Class A Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of the Issuer's Class A Common Stock delivered to the reporting person on November 15, 2024, from the vesting of RSUs, and does not represent a sale by the reporting person. F2 · balance_after: Includes 1,031,793 RSUs. Read SEC document |
| September 15, 2024 Filed Sep 17, 2024 21:06 UTC | Amplitude, Inc. AMPL · Entity 4566 | GrantClass A Common Stock | 1,125,592 | $0.00 | $0.00 |
DisclosureSEC source: 0001562180-24-006847 · primarydocument.xml · nonDerivative · entry 1 Casey Andrew · CIK 0002032390 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,125,592 F1 · shares: Each restricted stock unit ("RSU") represents a right to receive one share of the Issuer's Class A Common Stock. The RSUs vest in twelve substantially equal quarterly installments beginning on November 15, 2024, subject to the continued service of the reporting person through each vesting date. F2 · balance_after: Consists of 1,125,592 RSUs. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.