Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Ambiq Micro, Inc.AMBQ · Entity 751 | Chief Financial Officer | October 02, 2026 | October 07, 2026 |
| EVERSPIN TECHNOLOGIES INC.MRAM · Entity 5701 | Chief Financial Officer | March 13, 2019 | March 28, 2019 |
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.
Ambiq Micro, Inc.
Report date October 02, 2026 · Filed October 07, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 100,844 |
Ending reported balance
After 2026-10-02 transaction · row 3
3 source rows · reconciled sequenceRow 1 · 2026-10-02 · Sale · Disposed 2,343 · Balance 103,956 F1: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units. F2: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $68.41 to $69.40 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 2 · 2026-10-02 · Sale · Disposed 2,828 · Balance 101,128 F1: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units. F3: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.41 to $70.16 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 3 · 2026-10-02 · Sale · Disposed 284 · Balance 100,844 F1: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units. F4: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $71.50 to $72.26 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. |
Filing footnotes · ownership attribution and instrument terms
F1: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units.
F2: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $68.41 to $69.40 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.41 to $70.16 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F4: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $71.50 to $72.26 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
EVERSPIN TECHNOLOGIES INC.
Report date March 13, 2019 · Filed March 28, 2019
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 15,115 |
Reported balance
After 2019-03-13 transaction · row 1
1 source rowRow 1 · 2019-03-13 · Sale · Disposed 819 · Balance 15,115 |
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 |
|---|---|---|---|---|---|---|
| October 02, 2026 Filed Oct 7, 2026 00:16 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | SaleCommon Stock | 284 | $71.86 | $20,408.01 |
DisclosureSEC source: 0001312143-26-000013 · form4-10072026_121004.xml · nonDerivative · entry 3 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 100,844 F1 · kind: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units. F4 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $71.50 to $72.26 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| October 02, 2026 Filed Oct 7, 2026 00:16 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | SaleCommon Stock | 2,828 | $69.77 | $197,315.78 |
DisclosureSEC source: 0001312143-26-000013 · form4-10072026_121004.xml · nonDerivative · entry 2 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 101,128 F1 · kind: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units. F3 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.41 to $70.16 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| October 02, 2026 Filed Oct 7, 2026 00:16 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | SaleCommon Stock | 2,343 | $69.11 | $161,920.75 |
DisclosureSEC source: 0001312143-26-000013 · form4-10072026_121004.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 103,956 F1 · kind: This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units. F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $68.41 to $69.40 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 02, 2026 Filed Jun 4, 2026 21:01 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | Exercise / conversionStock Option (Right to Buy) · Derivative | 5,952 | $0.00 Strike: $16.80 | $0.00 |
DisclosureSEC source: 0001312143-26-000008 · form4-06042026_090604.xml · derivative · entry 2 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 104,953 Underlying: Common Stock · 5,952 shares Expires 2035-06-09 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: 47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vested on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. Read SEC document |
| June 02, 2026 Filed Jun 4, 2026 21:01 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | Exercise / conversionCommon Stock | 5,952 | $16.80 | $99,993.60 |
DisclosureSEC source: 0001312143-26-000008 · form4-06042026_090604.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 106,299 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 15, 2026 Filed May 18, 2026 22:12 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | Exercise / conversionStock Option (Right to Buy) · Derivative | 5,952 | $0.00 Strike: $16.80 | $0.00 |
DisclosureSEC source: 0001312143-26-000006 · form4-05182026_100554.xml · derivative · entry 6 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 110,905 Underlying: Common Stock · 5,952 shares Expires 2035-06-09 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: 47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vest on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. Read SEC document |
| May 15, 2026 Filed May 18, 2026 22:12 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | Exercise / conversionCommon Stock | 5,952 | $16.80 | $99,993.60 |
DisclosureSEC source: 0001312143-26-000006 · form4-05182026_100554.xml · nonDerivative · entry 4 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 100,347 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 14, 2026 Filed May 18, 2026 22:12 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | Exercise / conversionStock Option (Right to Buy) · Derivative | 26,000 | $0.00 Strike: $16.80 | $0.00 |
DisclosureSEC source: 0001312143-26-000006 · form4-05182026_100554.xml · derivative · entry 5 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 116,857 Underlying: Common Stock · 26,000 shares Expires 2035-06-09 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: 47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vest on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. Read SEC document |
| May 14, 2026 Filed May 18, 2026 22:12 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | SaleCommon Stock | 82 | $70.65 | $5,793.30 |
DisclosureSEC source: 0001312143-26-000006 · form4-05182026_100554.xml · nonDerivative · entry 3 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 94,395 Read SEC document |
| May 14, 2026 Filed May 18, 2026 22:12 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | SaleCommon Stock | 25,918 | $69.90 | $1,811,618.96 |
DisclosureSEC source: 0001312143-26-000006 · form4-05182026_100554.xml · nonDerivative · entry 2 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 94,477 F1 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.61 to $70.435 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| May 14, 2026 Filed May 18, 2026 22:12 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | Exercise / conversionCommon Stock | 26,000 | $16.80 | $436,800.00 |
DisclosureSEC source: 0001312143-26-000006 · form4-05182026_100554.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 120,395 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| March 06, 2026 Filed Mar 10, 2026 21:06 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | GrantCommon Stock | 41,728 | $0.00 | $0.00 |
DisclosureSEC source: 0001312143-26-000002 · form4-03102026_090311.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 94,395 F1 · shares: Represents the grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 25% of the shares subject to the RSU will vest on September 1, 2027, and 1/12 of the shares subject to the RSU will vest quarterly thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan). Read SEC document |
| March 06, 2026 Filed Apr 2, 2026 20:36 UTC Amendment | Ambiq Micro, Inc. AMBQ · Entity 751 | GrantCommon Stock | 41,728 | $0.00 | $0.00 |
DisclosureSEC source: 0001312143-26-000003 · form4a-04022026_080434.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 94,395 F1 · shares: Represents the grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 25% of the shares subject to the RSU will vest on October 1, 2027, and 1/12 of the shares subject to the RSU will vest quarterly thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan). Read SEC document |
| October 02, 2025 Filed Oct 6, 2025 21:58 UTC | Ambiq Micro, Inc. AMBQ · Entity 751 | GrantCommon Stock | 52,667 | $0.00 | $0.00 |
DisclosureSEC source: 0001312143-25-000003 · form4-10062025_091027.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 52,667 F1 · shares: Represents the grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 25% of the shares subject to the RSU will vest on October 1, 2026, and 1/12 of the shares subject to the RSU will vest quarterly thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan). Read SEC document |
| March 13, 2019 Filed Mar 28, 2019 21:31 UTC | EVERSPIN TECHNOLOGIES INC. MRAM · Entity 5701 | SaleCommon Stock | 819 | $8.45 | $6,920.55 |
DisclosureSEC source: 0001209191-19-021646 · doc4.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 15,115 Read SEC document |
| February 11, 2019 Filed Feb 13, 2019 22:28 UTC | EVERSPIN TECHNOLOGIES INC. MRAM · Entity 5701 | GrantEmployee Stock Option (Right to Buy) · Derivative | 20,000 | $0.00 Strike: $6.35 | $0.00 |
DisclosureSEC source: 0001209191-19-009770 · doc4.xml · derivative · entry 2 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 20,000 Underlying: Common Stock · 20,000 shares Expires 2029-02-10 F2 · derivative.exercise_date: 1/4th of the shares subject to the option shall vest on February 11, 2020 and 1/36th of the remaining shares shall vest in successive equal monthly installments thereafter. Read SEC document |
| February 11, 2019 Filed Feb 13, 2019 22:28 UTC | EVERSPIN TECHNOLOGIES INC. MRAM · Entity 5701 | GrantCommon Stock | 5,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-19-009770 · doc4.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 15,934 F1 · balance_after: Includes 934 shares purchased on October 12, 2018 pursuant to the Issuer's Employee Stock Purchase Plan. Read SEC document |
| March 13, 2018 Filed Mar 15, 2018 20:49 UTC | EVERSPIN TECHNOLOGIES INC. MRAM · Entity 5701 | GrantEmployee Stock Option (Right to Buy) · Derivative | 40,000 | $0.00 Strike: $9.12 | $0.00 |
DisclosureSEC source: 0001209191-18-019874 · doc4.xml · derivative · entry 2 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,000 Underlying: Common Stock · 40,000 shares Expires 2028-03-12 F1 · derivative.exercise_date: 1/4th of the shares subject to the option shall vest on March 13, 2019 and 1/36th of the remaining shares shall vest in successive equal monthly installments thereafter. Read SEC document |
| March 13, 2018 Filed Mar 15, 2018 20:49 UTC | EVERSPIN TECHNOLOGIES INC. MRAM · Entity 5701 | GrantCommon Stock | 10,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-18-019874 · doc4.xml · nonDerivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,000 Read SEC document |
| December 16, 2016 Filed Dec 21, 2016 01:40 UTC | EVERSPIN TECHNOLOGIES INC. MRAM · Entity 5701 | GrantEmployee Stock Option (Right to Buy) · Derivative | 24,313 | Not disclosed Strike: $6.63 | Not disclosed |
DisclosureSEC source: 0001209191-16-156218 · doc4.xml · derivative · entry 2 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 24,313 Underlying: Common Stock · 24,313 shares Expires 2026-07-11 F1 · kind: The two reported transactions involved an amendment of an outstanding option, resulting in the deemed cancellation of the "old" option and the grant of a replacement option. The option was originally granted on July 12, 2016 and provides for vesting of 1/4th of the shares subject to the option on April 26, 2017 and 1/36th of the remaining shares in successive equal monthly installments thereafter. F1 · price: The two reported transactions involved an amendment of an outstanding option, resulting in the deemed cancellation of the "old" option and the grant of a replacement option. The option was originally granted on July 12, 2016 and provides for vesting of 1/4th of the shares subject to the option on April 26, 2017 and 1/36th of the remaining shares in successive equal monthly installments thereafter. F1 · derivative.exercise_date: The two reported transactions involved an amendment of an outstanding option, resulting in the deemed cancellation of the "old" option and the grant of a replacement option. The option was originally granted on July 12, 2016 and provides for vesting of 1/4th of the shares subject to the option on April 26, 2017 and 1/36th of the remaining shares in successive equal monthly installments thereafter. Read SEC document |
| December 16, 2016 Filed Dec 21, 2016 01:40 UTC | EVERSPIN TECHNOLOGIES INC. MRAM · Entity 5701 | Disposition to issuerEmployee Stock Option (Right to Buy) · Derivative | 24,313 | Not disclosed Strike: $15.86 | Not disclosed |
DisclosureSEC source: 0001209191-16-156218 · doc4.xml · derivative · entry 1 Winzeler Jeffrey G · CIK 0001312143 · Chief Financial Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 24,313 shares Expires 2026-07-11 F1 · kind: The two reported transactions involved an amendment of an outstanding option, resulting in the deemed cancellation of the "old" option and the grant of a replacement option. The option was originally granted on July 12, 2016 and provides for vesting of 1/4th of the shares subject to the option on April 26, 2017 and 1/36th of the remaining shares in successive equal monthly installments thereafter. F1 · price: The two reported transactions involved an amendment of an outstanding option, resulting in the deemed cancellation of the "old" option and the grant of a replacement option. The option was originally granted on July 12, 2016 and provides for vesting of 1/4th of the shares subject to the option on April 26, 2017 and 1/36th of the remaining shares in successive equal monthly installments thereafter. F1 · derivative.exercise_date: The two reported transactions involved an amendment of an outstanding option, resulting in the deemed cancellation of the "old" option and the grant of a replacement option. The option was originally granted on July 12, 2016 and provides for vesting of 1/4th of the shares subject to the option on April 26, 2017 and 1/36th of the remaining shares in successive equal monthly installments thereafter. 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.