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person · Reporting owner

Kostman David

Disclosed activity across 3 companies

Tapewire entity
40018
SEC CIK
0001874180

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
NICE Ltd.NICE · Entity 3764DirectorSeptember 30, 2026October 02, 2026
Teads Holding Co.TEAD · Entity 7241Director · Chief Executive OfficerJune 05, 2026June 09, 2026
Unity Software Inc.U · Entity 3292DirectorJune 05, 2024June 12, 2024

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.

NICE Ltd.

Report date September 30, 2026 · Filed October 02, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Ordinary SharesSEC Table I · non-derivativeDirect19,141 Reported balance After 2026-09-30 transaction · row 1
1 source row

Row 1 · 2026-09-30 · Tax withholding · Disposed 5 · Balance 19,141

Teads Holding Co.

Report date June 05, 2026 · Filed June 09, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect1,510,440 Ending reported balance After 2026-06-05 transaction · row 3
3 source rows · reconciled sequence

Row 1 · 2026-06-05 · Tax withholding · Disposed 28,411 · Balance 1,525,026

F1: Shares withheld by the Issuer to cover tax obligations arising upon vesting and settlement of restricted stock units under the Issuer's 2007 Omnibus Securities and Incentive Plan in a transaction exempt under Rule 16b-3.

Row 2 · 2026-06-05 · Tax withholding · Disposed 7,870 · Balance 1,517,156

F2: Shares withheld by the Issuer to cover tax obligations arising upon vesting and settlement of restricted stock units under the Issuer's 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

Row 3 · 2026-06-05 · Tax withholding · Disposed 6,716 · Balance 1,510,440

F3: Shares withheld by the Issuer to cover tax obligations arising upon vesting and settlement of performance stock units under the Issuer's 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

Filing footnotes · ownership attribution and instrument terms

F1: Shares withheld by the Issuer to cover tax obligations arising upon vesting and settlement of restricted stock units under the Issuer's 2007 Omnibus Securities and Incentive Plan in a transaction exempt under Rule 16b-3.

F2: Shares withheld by the Issuer to cover tax obligations arising upon vesting and settlement of restricted stock units under the Issuer's 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

F3: Shares withheld by the Issuer to cover tax obligations arising upon vesting and settlement of performance stock units under the Issuer's 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

Unity Software Inc.

Report date June 05, 2024 · Filed June 12, 2024

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect142,712 Reported balance After 2024-06-05 transaction · row 1
1 source row

Row 1 · 2024-06-05 · Grant · Acquired 16,732 · Balance 142,712

F1: This Form 4 is a refiling of a Form 4 filed on June 6, 2024 that did not properly identify the Reporting Person.

F2: Represents restricted stock units granted to the Reporting Person. The shares subject to this award vest in full on the earlier of (i) the first anniversary of the date of grant or (ii) the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service through such date.

Filing footnotes · ownership attribution and instrument terms

F1: This Form 4 is a refiling of a Form 4 filed on June 6, 2024 that did not properly identify the Reporting Person.

F2: Represents restricted stock units granted to the Reporting Person. The shares subject to this award vest in full on the earlier of (i) the first anniversary of the date of grant or (ii) the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service through such date.

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
November 07, 2022 Filed Nov 10, 2022 01:15 UTC Unity Software Inc. U · Entity 3292 GrantCommon Stock 16,142 $0.00 $0.00
Disclosure

SEC source: 0001810806-22-000093 · wf-form4_166804291095983.xml · nonDerivative · entry 3

Kostman David · CIK 0001874180 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,924

F6 · shares: Represents RSUs granted to the Reporting Person. These RSUs vest in equal quarterly installments over a three-year period beginning on November 7, 2022, such that on November 7, 2025, such RSUs will be 100% vested, subject to the Reporting Person's continued service through the vesting period.

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November 07, 2022 Filed Nov 10, 2022 01:15 UTC Unity Software Inc. U · Entity 3292 GrantCommon Stock 5,672 Not disclosed Not disclosed
Disclosure

SEC source: 0001810806-22-000093 · wf-form4_166804291095983.xml · nonDerivative · entry 2

Kostman David · CIK 0001874180 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,782

F4 · shares: Received in exchange for restricted stock units ("ironSource RSUs") representing 52,083 ironSource Ordinary Shares. Pursuant to the Merger Agreement, at the Effective Time, such ironSource RSUs were assumed by the Issuer and converted into restricted stock units representing a number of shares of Common Stock ("RSUs"), with such RSUs subject to substantially the same terms and conditions applicable to such ironSource RSUs, except that the number of shares of Common Stock subject to such RSUs is equal to the product obtained by multiplying (x) the number of ironSource Ordinary Shares subject to such ironSource RSUs by (y) the Exchange Ratio, rounded up to the nearest whole share for any fractional shares of Common Stock resulting from the calculation.

F5 · shares: These RSUs vest in equal annual installments over a three-year period beginning on September 2, 2023, such that on September 2, 2025, these RSUs will be 100% vested, subject to the Reporting Person's continued service through the vesting period.

F3 · price: On the date immediately prior to the Effective Time, the closing price of the Common Stock on the New York Stock Exchange ("NYSE") was $24.78 per share and the closing price of ironSource Class A ordinary shares on the NYSE was $2.74 per share. ironSource Class B ordinary shares were not traded on any exchange.

F4 · price: Received in exchange for restricted stock units ("ironSource RSUs") representing 52,083 ironSource Ordinary Shares. Pursuant to the Merger Agreement, at the Effective Time, such ironSource RSUs were assumed by the Issuer and converted into restricted stock units representing a number of shares of Common Stock ("RSUs"), with such RSUs subject to substantially the same terms and conditions applicable to such ironSource RSUs, except that the number of shares of Common Stock subject to such RSUs is equal to the product obtained by multiplying (x) the number of ironSource Ordinary Shares subject to such ironSource RSUs by (y) the Exchange Ratio, rounded up to the nearest whole share for any fractional shares of Common Stock resulting from the calculation.

F5 · price: These RSUs vest in equal annual installments over a three-year period beginning on September 2, 2023, such that on September 2, 2025, these RSUs will be 100% vested, subject to the Reporting Person's continued service through the vesting period.

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November 07, 2022 Filed Nov 10, 2022 01:15 UTC Unity Software Inc. U · Entity 3292 GrantCommon Stock 97,110 Not disclosed Not disclosed
Disclosure

SEC source: 0001810806-22-000093 · wf-form4_166804291095983.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,110

F1 · shares: Received in exchange for 891,734 Class A ordinary shares, no par value ("ironSource Class A ordinary shares"), and zero Class B ordinary shares, no par value ("ironSource Class B ordinary shares" and together with the ironSource Class A ordinary shares, the "ironSource Ordinary Shares"), of ironSource Ltd. ("ironSource") pursuant to the Agreement and Plan of Merger, dated as of July 13, 2022, by and among Unity Software Inc. (the "Issuer"), Ursa Aroma Merger Subsidiary Ltd., a wholly owned subsidiary of the Issuer ("Merger Sub"), and ironSource (the "Merger Agreement"), pursuant to which ironSource merged with and into Merger Sub with ironSource surviving as a wholly owned subsidiary of the Issuer (the "Merger").

F2 · shares: Pursuant to the Merger Agreement, at the effective time of the Merger (the "Effective Time"), each ironSource Ordinary Share was converted into the right to receive 0.1089 shares (the "Exchange Ratio") of common stock, par value $0.000005 per share, of the Issuer ("Common Stock), rounded up or down to the nearest whole share for any fractional shares of Common Stock resulting from the calculation.

F1 · price: Received in exchange for 891,734 Class A ordinary shares, no par value ("ironSource Class A ordinary shares"), and zero Class B ordinary shares, no par value ("ironSource Class B ordinary shares" and together with the ironSource Class A ordinary shares, the "ironSource Ordinary Shares"), of ironSource Ltd. ("ironSource") pursuant to the Agreement and Plan of Merger, dated as of July 13, 2022, by and among Unity Software Inc. (the "Issuer"), Ursa Aroma Merger Subsidiary Ltd., a wholly owned subsidiary of the Issuer ("Merger Sub"), and ironSource (the "Merger Agreement"), pursuant to which ironSource merged with and into Merger Sub with ironSource surviving as a wholly owned subsidiary of the Issuer (the "Merger").

F2 · price: Pursuant to the Merger Agreement, at the effective time of the Merger (the "Effective Time"), each ironSource Ordinary Share was converted into the right to receive 0.1089 shares (the "Exchange Ratio") of common stock, par value $0.000005 per share, of the Issuer ("Common Stock), rounded up or down to the nearest whole share for any fractional shares of Common Stock resulting from the calculation.

F3 · price: On the date immediately prior to the Effective Time, the closing price of the Common Stock on the New York Stock Exchange ("NYSE") was $24.78 per share and the closing price of ironSource Class A ordinary shares on the NYSE was $2.74 per share. ironSource Class B ordinary shares were not traded on any exchange.

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October 07, 2022 Filed Oct 12, 2022 00:06 UTC Teads Holding Co. OB · Entity 7241 Tax withholdingCommon Stock 2,222 $4.06 $9,021.32
Disclosure

SEC source: 0001874180-22-000011 · wf-form4_166553319539046.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director · Co-Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 420,984

F1 · shares: Shares withheld by the Company to cover tax obligations arising upon vesting and settlement of restricted stock units under the registrant's 2007 Omnibus Securities and Incentive Plan in a transaction exempt under Rule 16b-3.

Read SEC document
September 07, 2022 Filed Sep 9, 2022 22:56 UTC Teads Holding Co. OB · Entity 7241 Tax withholdingCommon Stock 1,888 $4.25 $8,024.00
Disclosure

SEC source: 0001874180-22-000009 · wf-form4_166276415025867.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director · Co-Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 423,206

F1 · shares: Shares withheld by the Company to cover tax obligations arising upon vesting and settlement of restricted stock units under the registrant's 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

Read SEC document
July 06, 2022 Filed Jul 8, 2022 21:22 UTC Teads Holding Co. OB · Entity 7241 Tax withholdingCommon Stock 2,222 $5.16 $11,465.52
Disclosure

SEC source: 0001874180-22-000004 · wf-form4_165731535484056.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director · Co-Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 425,094

F1 · shares: Shares withheld by the Company to cover tax obligations arising upon vesting and settlement of restricted stock units under the registrant's 2007 Omnibus Securities and Incentive Plan in a transaction exempt under Rule 16b-3.

Read SEC document
June 13, 2022 Filed Jun 16, 2022 01:33 UTC Teads Holding Co. OB · Entity 7241 Tax withholdingCommon Stock 1,889 $5.46 $10,313.94
Disclosure

SEC source: 0001214659-22-008079 · marketforms-56471.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director · Co-Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 427,316

F1 · shares: Shares withheld by the Company to cover tax obligations arising upon vesting and settlement of restricted stock units under the registrant's 2021 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3.

Read SEC document
April 19, 2022 Filed Apr 22, 2022 01:16 UTC Teads Holding Co. OB · Entity 7241 GrantCommon Stock 75,000 $0.00 $0.00
Disclosure

SEC source: 0001214659-22-005618 · marketforms-56011.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director · Co-Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 429,205

F1 · shares: Restricted stock units granted pursuant to the Company's 2021 Long-Term Incentive Plan which vest in sixteen equal increments beginning on June 5, 2022 and each quarterly anniversary of such date thereafter.

Read SEC document
April 12, 2022 Filed Apr 15, 2022 01:52 UTC Teads Holding Co. OB · Entity 7241 Tax withholdingCommon Stock 2,222 $10.25 $22,775.50
Disclosure

SEC source: 0001214659-22-005286 · marketforms-55992.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director · Co-Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 354,205

F1 · shares: Shares withheld by the Company to cover tax obligations arising upon vesting and settlement of restricted stock units under the registrant's 2007 Omnibus Securities and Incentive Plan in a transaction exempt under Rule 16b-3.

Read SEC document
December 28, 2021 Filed Dec 30, 2021 22:00 UTC Teads Holding Co. OB · Entity 7241 Tax withholdingCommon Stock 350,144 $13.82 $4,838,990.08
Disclosure

SEC source: 0001214659-21-013795 · marketforms-54825.xml · nonDerivative · entry 1

Kostman David · CIK 0001874180 · Director · Co-Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 356,427

F1 · shares: Shares withheld by the Company to cover tax obligations arising upon vesting and settlement of restricted stock units under the registrant's 2007 Omnibus Securities and Incentive Plan in a transaction exempt under Rule 16b-3. The remaining (non-withheld) shares remain subject to a contractual lock-up restriction on sale until January 19, 2022.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.