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Walker Corey

Disclosed activity across 2 companies

Tapewire entity
36210
SEC CIK
0001776172

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Avantor, Inc.AVTR · Entity 3546President, VWR Dist. & Servs.June 21, 2026June 22, 2026
DCP Midstream, LPDCP · Entity 112201PresidentFebruary 28, 2021March 02, 2021

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.

Avantor, Inc.

Report date June 21, 2026 · Filed June 22, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect384,535 Reported balance After 2026-06-21 transaction · row 1
1 source row

Row 1 · 2026-06-21 · Tax withholding · Disposed 3,010 · Balance 384,535

F1: Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

Filing footnotes · ownership attribution and instrument terms

F1: Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

DCP Midstream, LP

Report date February 28, 2021 · Filed March 02, 2021

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Restricted Phantom UnitsSEC Table II · derivative / convertible security · Expires 2024-02-27Direct51,440 Reported balance After 2021-02-28 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2021-02-28 · Grant · Acquired 24,980 · Balance 51,440

F1: Each restricted phantom unit is the economic equivalent of one DCP common unit.

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted phantom unit is the economic equivalent of one DCP common unit.

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
June 21, 2026 Filed Jun 22, 2026 21:07 UTC Avantor, Inc. AVTR · Entity 3546 Tax withholdingCommon Stock 3,010 $9.58 $28,835.80
Disclosure

SEC source: 0001628280-26-044719 · wk-form4_1782162452.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · President, VWR Dist. & Servs.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 384,535

F1 · kind: Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

Read SEC document
February 20, 2026 Filed Feb 24, 2026 01:53 UTC Avantor, Inc. AVTR · Entity 3546 Tax withholdingCommon Stock 4,963 $9.03 $44,815.89
Disclosure

SEC source: 0001628280-26-010828 · wk-form4_1771898007.xml · nonDerivative · entry 2

Walker Corey · CIK 0001776172 · President, VWR Dist. & Servs.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 387,545

F2 · kind: Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

Read SEC document
February 19, 2026 Filed Feb 24, 2026 01:53 UTC Avantor, Inc. AVTR · Entity 3546 GrantStock Options (Right to Buy) · Derivative 634,617 $0.00 Strike: $11.05 $0.00
Disclosure

SEC source: 0001628280-26-010828 · wk-form4_1771898007.xml · derivative · entry 3

Walker Corey · CIK 0001776172 · President, VWR Dist. & Servs.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634,617

Underlying: Common Stock · 634,617 shares

Expires 2036-02-19

F3 · derivative.exercise_date: Reflects a grant of stock options that vest in three equal annual installments beginning on February 19, 2027.

Read SEC document
February 19, 2026 Filed Feb 24, 2026 01:53 UTC Avantor, Inc. AVTR · Entity 3546 GrantCommon Stock 161,237 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-010828 · wk-form4_1771898007.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · President, VWR Dist. & Servs.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 392,508

F1 · kind: Reflects a grant of restricted stock units that vest in three equal annual installments beginning on February 19, 2027.

Read SEC document
June 21, 2025 Filed Jun 24, 2025 21:20 UTC Avantor, Inc. AVTR · Entity 3546 Tax withholdingCommon Stock 2,730 $13.57 $37,046.10
Disclosure

SEC source: 0001722482-25-000173 · wk-form4_1750800013.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · President Laboratory Solutions

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 231,271

F1 · kind: Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

Read SEC document
May 09, 2025 Filed May 12, 2025 21:35 UTC Avantor, Inc. AVTR · Entity 3546 GrantCommon Stock 162,866 $0.00 $0.00
Disclosure

SEC source: 0001722482-25-000159 · wk-form4_1747085743.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · President Laboratory Solutions

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 234,001

F1 · kind: Reflects a grant of restricted stock units that vest on May 9, 2027.

Read SEC document
June 21, 2024 Filed Jun 26, 2024 00:03 UTC Avantor, Inc. AVTR · Entity 3546 GrantStock Options (Right to Buy) · Derivative 70,462 $0.00 Strike: $22.12 $0.00
Disclosure

SEC source: 0001722482-24-000131 · wk-form4_1719360203.xml · derivative · entry 2

Walker Corey · CIK 0001776172 · President Laboratory Solutions

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,462

Underlying: Common Stock · 70,462 shares

Expires 2034-06-21

F2 · derivative.exercise_date: Reflects a grant of stock options that vest in three equal annual installments beginning on June 21, 2025.

Read SEC document
June 21, 2024 Filed Jun 26, 2024 00:03 UTC Avantor, Inc. AVTR · Entity 3546 GrantCommon Stock 28,254 $0.00 $0.00
Disclosure

SEC source: 0001722482-24-000131 · wk-form4_1719360203.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · President Laboratory Solutions

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,254

F1 · kind: Reflects a grant of restricted stock units that vest in three equal annual installments beginning on June 21, 2025.

Read SEC document
February 28, 2021 Filed Mar 2, 2021 17:53 UTC DCP Midstream, LP DCP · Entity 112201 GrantRestricted Phantom Units · Derivative 24,980 $0.00 $0.00
Disclosure

SEC source: 0001562180-21-001792 · primarydocument.xml · derivative · entry 1

Walker Corey · CIK 0001776172 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,440

Underlying: Common Units · 24,980 shares

Expires 2024-02-27

F1 · derivative.exercise_price: Each restricted phantom unit is the economic equivalent of one DCP common unit.

Read SEC document
March 10, 2020 Filed Mar 10, 2020 15:16 UTC DCP Midstream, LP DCP · Entity 112201 PurchaseCommon Units 25,000 $6.05 $151,250.00
Disclosure

SEC source: 0001562180-20-002334 · primarydocument.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Read SEC document
February 28, 2020 Filed Mar 3, 2020 16:28 UTC DCP Midstream, LP DCP · Entity 112201 GrantRestricted Phantom Units · Derivative 161,640 $0.00 $0.00
Disclosure

SEC source: 0001562180-20-002011 · primarydocument.xml · derivative · entry 2

Walker Corey · CIK 0001776172 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,640

Underlying: Common Units · 161,640 shares

Expires 2023-02-27

F1 · derivative.exercise_price: Each restricted phantom unit is the economic equivalent of one DCP common unit.

F3 · derivative.underlying_shares: These restricted phantom units are payable in cash upon settlement.

Read SEC document
February 28, 2020 Filed Mar 3, 2020 16:28 UTC DCP Midstream, LP DCP · Entity 112201 GrantRestricted Phantom Units · Derivative 26,460 $0.00 $0.00
Disclosure

SEC source: 0001562180-20-002011 · primarydocument.xml · derivative · entry 1

Walker Corey · CIK 0001776172 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,460

Underlying: Common Units · 26,460 shares

Expires 2023-02-27

F1 · derivative.exercise_price: Each restricted phantom unit is the economic equivalent of one DCP common unit.

F2 · derivative.underlying_shares: These restricted phantom units are payable in DCP common units upon settlement.

Read SEC document
May 21, 2019 Filed May 23, 2019 23:25 UTC Avantor, Inc. AVTR · Entity 3546 GrantCommon Stock 157,143 $0.00 $0.00
Disclosure

SEC source: 0000899243-19-014596 · doc4.xml · nonDerivative · entry 1

Walker Corey · CIK 0001776172 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 227,623

F1 · kind: Reflects a grant of restricted stock units that vests as follows: (a) 50% vests on May 21, 2021, and (b) the remaining 50% vests in two equal annual installments beginning on May 21, 2022.

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.