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person · Reporting owner

Ziemba Peter M

Disclosed activity across 1 company

Tapewire entity
45805
SEC CIK
0001064674

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
WisdomTree, Inc.WT · Entity 4093Chief Administrative OfficerMay 19, 2026May 20, 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.

WisdomTree, Inc.

Report date May 19, 2026 · Filed May 20, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect885,686 Reported balance After 2026-05-19 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-05-19 · Sale · Disposed 100,000 · Balance 885,686

F2: The price included in Column 4 is an average weighted price. These shares were sold in multiple transactions at prices ranging from $19.25 to $19.34, inclusive. The reporting person undertakes to provide to WisdomTree, Inc., any security holder of WisdomTree, Inc. 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 footnote (2) of this Form 4.

F1: Includes restricted stock awards vesting as to (i) 44,646 shares on January 25, 2027, (ii) 22,733 shares on January 25, 2028 and (iii) 8,619 shares on January 25, 2029.

Filing footnotes · ownership attribution and instrument terms

F1: Includes restricted stock awards vesting as to (i) 44,646 shares on January 25, 2027, (ii) 22,733 shares on January 25, 2028 and (iii) 8,619 shares on January 25, 2029.

F2: The price included in Column 4 is an average weighted price. These shares were sold in multiple transactions at prices ranging from $19.25 to $19.34, inclusive. The reporting person undertakes to provide to WisdomTree, Inc., any security holder of WisdomTree, Inc. 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 footnote (2) of this Form 4.

Transaction history

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Purchases/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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
February 03, 2020 Filed Feb 4, 2020 20:13 UTC WisdomTree, Inc. WETF · Entity 4093 PurchaseCommon Stock 25,000 $4.19 $104,685.00
Disclosure

SEC source: 0001209191-20-006246 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,004,201

F1 · price: The price included in Column 4 is an average weighted price. These shares were purchased in multiple transactions at prices ranging from $4.17 to $4.19, inclusive. 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 purchased at each separate price within the range set forth in footnote (1) of this Form 4.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 57,127 shares on January 25, 2021, (ii) 45,663 shares on January 25, 2022 and (iii) 13,264 shares on January 25, 2023.

Read SEC document
December 13, 2019 Filed Feb 12, 2020 21:34 UTC WisdomTree, Inc. WETF · Entity 4093 OtherCommon Stock 1,333 $0.00 $0.00
Disclosure

SEC source: 0001209191-20-008751 · doc5.xml · nonDerivative · entry 2

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 950,510

F3 · price: These shares were acquired by will or the laws of descent and distribution and no price was paid for the shares.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 47,712 shares on January 25, 2020, (ii) 43,864 shares on January 25, 2021 and (iii) 32,400 shares on January 25, 2022.

Read SEC document
April 30, 2019 Filed Feb 12, 2020 21:34 UTC WisdomTree, Inc. WETF · Entity 4093 GiftCommon Stock 8,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-20-008751 · doc5.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 949,177

F1 · acquired: Shares transferred by the Reporting Person as a bona fide gift without consideration.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 47,712 shares on January 25, 2020, (ii) 43,864 shares on January 25, 2021 and (iii) 32,400 shares on January 25, 2022.

Read SEC document
February 04, 2019 Filed Feb 4, 2019 20:07 UTC WisdomTree, Inc. WETF · Entity 4093 PurchaseCommon Stock 16,000 $6.07 $97,081.60
Disclosure

SEC source: 0001209191-19-006713 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 957,177

F1 · price: The price included in Column 4 is an average weighted price. These shares were purchased in multiple transactions at prices ranging from $6.06 to $6.08, inclusive. The reporting person undertakes to provide to WisdomTree Investments, Inc., any security holder of WisdomTree Investments, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote (1) of this Form 4.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 47,712 shares on January 25, 2020, (ii) 43,864 shares on January 25, 2021 and (iii) 32,400 shares on January 25, 2022.

Read SEC document
January 27, 2019 Filed Jan 29, 2019 22:12 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 10,249 $0.00 $0.00
Disclosure

SEC source: 0001209191-19-005791 · doc4.xml · nonDerivative · entry 3

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 941,177

F3 · shares: Surrender of common stock to Issuer upon vesting of restricted stock award to cover withholding taxes.

F4 · balance_after: Includes restricted stock awards which vest as to (i) 47,712 shares on January 25, 2020, (ii) 43,864 shares on January 25, 2021 and (iii) 32,400 shares on January 25, 2022.

Read SEC document
January 25, 2019 Filed Jan 29, 2019 22:12 UTC WisdomTree, Inc. WETF · Entity 4093 GrantPerformance Based Restricted Stock Units · Derivative 24,299 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001209191-19-005791 · doc4.xml · derivative · entry 4

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,299

Underlying: Common Stock · 24,299 shares

Expires not disclosed

F5 · derivative.expiration_date: On the third anniversary of the grant date, the Performance-Based Restricted Stock Units ("PRSUs") will vest and the number of shares of the Issuer's common stock ("Common Stock") to be issued pursuant to the PRSUs will be determined based on the total shareholder return ("TSR") of the Common Stock relative to the respective TSRs of the stocks of a peer group of companies, each measured over a three-year period from the date of grant of the PRSUs. The number of shares of Common Stock to be issued upon vesting of the PRSUs will range between 0% to 200% of the number of shares indicated above (the target share amount).

F6 · derivative.expiration_date: (Continuation of Footnote 5) - If the Reporting Person's employment is terminated under certain circumstances or a change of control occurs prior to the third anniversary of the grant date, all or a portion of the PRSUs will vest and the number of shares of Common Stock to be issued pursuant to the PRSUs will be determined at such time, based on the respective TSRs of the Common Stock and the stocks of the peer group, each measured from the grant date to the accelerated vesting date. PRSUs have no voting rights and are generally non-transferable.

Read SEC document
January 25, 2019 Filed Jan 29, 2019 22:12 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 6,014 $0.00 $0.00
Disclosure

SEC source: 0001209191-19-005791 · doc4.xml · nonDerivative · entry 2

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 951,426

F3 · shares: Surrender of common stock to Issuer upon vesting of restricted stock award to cover withholding taxes.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 29,977 shares on January 27, 2019, (ii) 47,712 shares on January 25, 2020, (iii) 43,864 shares on January 25, 2021 and (iv) 32,400 shares on January 25, 2022.

Read SEC document
January 25, 2019 Filed Jan 29, 2019 22:12 UTC WisdomTree, Inc. WETF · Entity 4093 GrantCommon Stock 97,196 $0.00 $0.00
Disclosure

SEC source: 0001209191-19-005791 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 957,440

F1 · shares: Restricted stock awarded by Issuer on January 25, 2019 and vesting as to (i) 32,398 shares on each of January 25, 2020 and 2021 and (ii) 32,400 shares on January 25, 2022.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 29,977 shares on January 27, 2019, (ii) 47,712 shares on January 25, 2020, (iii) 43,864 shares on January 25, 2021 and (iv) 32,400 shares on January 25, 2022.

Read SEC document
February 15, 2018 Filed Feb 20, 2018 19:43 UTC WisdomTree, Inc. WETF · Entity 4093 GiftCommon Stock 6,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-011214 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 865,844

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 15,313 shares on January 25, 2019, (ii) 29,977 shares on January 27, 2019, (iii) 15,314 shares on January 25, 2020 and (iv) 11,466 shares on January 25, 2021.

Read SEC document
February 15, 2018 Filed Mar 29, 2018 14:24 UTC Amendment WisdomTree, Inc. WETF · Entity 4093 GiftCommon Stock 6,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-022016 · doc4a.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 865,844

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 15,313 shares on January 25, 2019, (ii) 29,977 shares on January 27, 2019, (iii) 15,314 shares on January 25, 2020 and (iv) 11,466 shares on January 25, 2021.

Read SEC document
January 25, 2018 Filed Jan 29, 2018 21:26 UTC WisdomTree, Inc. WETF · Entity 4093 GrantCommon Stock 34,398 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-005853 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 871,844

F1 · shares: Restricted stock awarded by Issuer on January 25, 2018 and vesting as to 11,466 shares on each of January 25, 2019, 2020 and 2021.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 15,313 shares on January 25, 2019, (ii) 29,977 shares on January 27, 2019, (iii) 15,314 shares on January 25, 2020 and (iv) 11,466 shares on January 25, 2021.

Read SEC document
December 29, 2017 Filed Jan 2, 2018 22:21 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 6,565 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-000302 · doc4.xml · nonDerivative · entry 4

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 837,446

F3 · shares: Surrender of common stock to Issuer to cover withholding taxes upon accelerated vesting of restricted stock award originally scheduled to vest in January 2018.

F4 · balance_after: Includes restricted stock awards which vest as to (i) 29,977 shares on January 27, 2019, (ii) 3,847 shares on January 25, 2019 and (iii) 3,848 shares on January 25, 2020.

Read SEC document
December 29, 2017 Filed Jan 2, 2018 22:21 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 15,459 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-000302 · doc4.xml · nonDerivative · entry 3

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 844,011

F3 · shares: Surrender of common stock to Issuer to cover withholding taxes upon accelerated vesting of restricted stock award originally scheduled to vest in January 2018.

F4 · balance_after: Includes restricted stock awards which vest as to (i) 29,977 shares on January 27, 2019, (ii) 3,847 shares on January 25, 2019 and (iii) 3,848 shares on January 25, 2020.

Read SEC document
December 29, 2017 Filed Jan 2, 2018 22:21 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 1,984 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-000302 · doc4.xml · nonDerivative · entry 2

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 859,470

F3 · shares: Surrender of common stock to Issuer to cover withholding taxes upon accelerated vesting of restricted stock award originally scheduled to vest in January 2018.

F4 · balance_after: Includes restricted stock awards which vest as to (i) 29,977 shares on January 27, 2019, (ii) 3,847 shares on January 25, 2019 and (iii) 3,848 shares on January 25, 2020.

Read SEC document
December 14, 2017 Filed Jan 2, 2018 22:21 UTC WisdomTree, Inc. WETF · Entity 4093 GiftCommon Stock 2,650 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-000302 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 861,454

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 14,072 shares on January 28, 2018, (ii) 29,976 shares on January 27, 2018, (iii) 29,977 shares on January 27, 2019, (iv) 3,847 shares on each of January 25, 2018 and 2019 and (v) 3,848 shares on January 25, 2020.

Read SEC document
May 23, 2017 Filed Mar 29, 2018 14:24 UTC Amendment WisdomTree, Inc. WETF · Entity 4093 GiftCommon Stock 5,600 $0.00 $0.00
Disclosure

SEC source: 0001209191-18-022016 · doc4a.xml · nonDerivative · entry 2

Ziemba Peter M · CIK 0001064674 · Chief Administrative Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 860,244

F3 · security: This Form 4 Amendment is being filed to report a bona fide gift without consideration that was made by the Reporting Person on May 23, 2017 and not previously reported.

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 15,313 shares on January 25, 2019, (ii) 29,977 shares on January 27, 2019, (iii) 15,314 shares on January 25, 2020 and (iv) 11,466 shares on January 25, 2021.

Read SEC document
January 28, 2017 Filed Jan 30, 2017 21:16 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 5,147 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-006115 · doc4.xml · nonDerivative · entry 2

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 864,158

F1 · shares: Surrender of common stock to Issuer upon vesting of restricted stock award to cover withholding taxes.

F3 · balance_after: Includes restricted stock awards which vest as to (i) 14,072 shares on January 28, 2018, (ii) 29,976 shares on January 27, 2018, (iii) 29,977 shares on January 27, 2019, (iv) 3,847 shares on each of January 25, 2018 and 2019 and (v) 3,848 shares on January 25, 2020.

Read SEC document
January 28, 2017 Filed Jan 31, 2017 21:28 UTC Amendment WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 5,201 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-006380 · doc4a.xml · nonDerivative · entry 2

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 864,104

F1 · shares: Surrender of common stock to Issuer upon vesting of restricted stock award to cover withholding taxes.

F3 · balance_after: Includes restricted stock awards which vest as to (i) 14,072 shares on January 28, 2018, (ii) 29,976 shares on January 27, 2018, (iii) 29,977 shares on January 27, 2019, (iv) 3,847 shares on each of January 25, 2018 and 2019 and (v) 3,848 shares on January 25, 2020.

Read SEC document
January 27, 2017 Filed Jan 30, 2017 21:16 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 11,029 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-006115 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 869,305

F1 · shares: Surrender of common stock to Issuer upon vesting of restricted stock award to cover withholding taxes.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 14,068 shares on January 28, 2017, (ii) 14,072 shares on January 28, 2018, (iii) 29,976 shares on January 27, 2018, (iv) 29,977 shares on January 27, 2019, (v) 3,847 shares on each of January 25, 2018 and 2019 and (vi) 3,848 shares on January 25, 2020.

Read SEC document
January 27, 2017 Filed Jan 31, 2017 21:28 UTC Amendment WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 11,029 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-006380 · doc4a.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 869,305

F1 · shares: Surrender of common stock to Issuer upon vesting of restricted stock award to cover withholding taxes.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 14,068 shares on January 28, 2017, (ii) 14,072 shares on January 28, 2018, (iii) 29,976 shares on January 27, 2018, (iv) 29,977 shares on January 27, 2019, (v) 3,847 shares on each of January 25, 2018 and 2019 and (vi) 3,848 shares on January 25, 2020.

Read SEC document
January 25, 2017 Filed Jan 27, 2017 21:26 UTC WisdomTree, Inc. WETF · Entity 4093 GrantCommon Stock 11,542 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-005892 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 880,334

F1 · shares: Restricted stock awarded by Issuer on January 25, 2017 and vesting as to (i) 3,847 shares on each of January 25, 2018 and 2019 and (ii) 3,848 shares on January 25, 2020.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 14,068 shares on January 28, 2017, (ii) 14,072 shares on January 28, 2018, (iii) 29,976 shares on each of January 27, 2017 and 2018, (iv) 29,977 shares on January 27, 2019, (v) 3,847 shares on each of January 25, 2018 and 2019 and (vi) 3,848 shares on January 25, 2020.

Read SEC document
January 14, 2017 Filed Jan 18, 2017 14:45 UTC WisdomTree, Inc. WETF · Entity 4093 Tax withholdingCommon Stock 4,252 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-003998 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 868,792

F1 · shares: Surrender of common stock to Issuer upon vesting of restricted stock award to cover withholding taxes.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 14,068 shares on January 28, 2017, (ii) 14,072 shares on January 28, 2018, (iii) 29,976 shares on each of January 27, 2017 and 2018 and (iv) 29,977 shares on January 27, 2019.

Read SEC document
November 29, 2016 Filed Jan 17, 2017 22:26 UTC WisdomTree, Inc. WETF · Entity 4093 GiftCommon Stock 500 $0.00 $0.00
Disclosure

SEC source: 0001209191-17-003923 · doc5.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 873,044

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 10,057 shares on January 14, 2017, (ii) 14,068 shares on January 28, 2017, (iii) 14,072 shares on January 28, 2018, (iv) 29,976 shares on each of January 27, 2017 and 2018 and (v) 29,977 shares on January 27, 2019.

Read SEC document
September 09, 2016 Filed Sep 12, 2016 21:02 UTC WisdomTree, Inc. WETF · Entity 4093 GiftCommon Stock 5,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-16-140956 · doc4.xml · nonDerivative · entry 1

Ziemba Peter M · CIK 0001064674 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 873,544

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

F2 · balance_after: Includes restricted stock awards which vest as to (i) 10,057 shares on January 14, 2017, (ii) 14,068 shares on January 28, 2017, (iii) 14,072 shares on January 28, 2018, (iv) 29,976 shares on each of January 27, 2017 and 2018 and (v) 29,977 shares on January 27, 2019.

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.