Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Amplitude, Inc.AMPL · Entity 4566 | Chief Commercial Officer | September 04, 2026 | September 09, 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 September 04, 2026 · Filed September 09, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Common StockSEC Table I · non-derivative | Direct | 1,622,696 |
Reported balance
After 2026-09-04 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-09-04 · Sale · Disposed 300,000 · Balance 1,622,696 F1: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on June 2, 2026. F2: This transaction was executed in multiple trades at prices ranging from $12.6150 to $13.5100. The price reported in Column 4 above reflects the weighted average sale 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 sold at each respective price within the range set forth in this footnote. F3: Includes 1,241,362 restricted stock units. |
Filing footnotes · ownership attribution and instrument terms
F1: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on June 2, 2026.
F2: This transaction was executed in multiple trades at prices ranging from $12.6150 to $13.5100. The price reported in Column 4 above reflects the weighted average sale 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 sold at each respective price within the range set forth in this footnote.
F3: Includes 1,241,362 restricted stock units.
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 |
|---|---|---|---|---|---|---|
| September 04, 2026 Filed Sep 9, 2026 21:03 UTC | Amplitude, Inc. AMPL · Entity 4566 | SaleClass A Common Stock | 300,000 | $12.99 | $3,897,750.00 |
DisclosureSEC source: 0001866692-26-000015 · form4.xml · nonDerivative · entry 1 Crook Nathaniel Glenn · CIK 0002121274 · Chief Commercial Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 1,622,696 F1 · shares: The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on June 2, 2026. F2 · price: This transaction was executed in multiple trades at prices ranging from $12.6150 to $13.5100. The price reported in Column 4 above reflects the weighted average sale 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 sold at each respective price within the range set forth in this footnote. F3 · balance_after: Includes 1,241,362 restricted stock units. Read SEC document |
| August 17, 2026 Filed Aug 18, 2026 21:16 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 109,368 | $13.03 | $1,425,065.04 |
DisclosureSEC source: 0001866692-26-000011 · form4.xml · nonDerivative · entry 1 Crook Nathaniel Glenn · CIK 0002121274 · Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,922,696 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 1,241,362 RSUs. Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:28 UTC | Amplitude, Inc. AMPL · Entity 4566 | Tax withholdingClass A Common Stock | 101,292 | $6.06 | $613,829.52 |
DisclosureSEC source: 0002121274-26-000004 · primarydocument.xml · nonDerivative · entry 1 Crook Nathaniel Glenn · CIK 0002121274 · Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,032,064 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 1,471,366 RSUs. F3 · balance_after: Includes 2,330 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 | 974,930 | $0.00 | $0.00 |
DisclosureSEC source: 0002121274-26-000002 · primarydocument.xml · nonDerivative · entry 2 Crook Nathaniel Glenn · CIK 0002121274 · Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,131,026 F3 · shares: Each 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. F4 · balance_after: Includes 1,701,371 RSUs. Read SEC document |
| April 15, 2026 Filed Apr 17, 2026 21:54 UTC | Amplitude, Inc. AMPL · Entity 4566 | GrantClass A Common Stock | 278,551 | $0.00 | $0.00 |
DisclosureSEC source: 0002121274-26-000002 · primarydocument.xml · nonDerivative · entry 1 Crook Nathaniel Glenn · CIK 0002121274 · Chief Commercial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,156,096 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 four 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 726,441 restricted stock units. 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.