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Gaskill Christopher Burke

Disclosed activity across 2 companies

Tapewire entity
68544
SEC CIK
0001854269

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
CARLISLE COMPANIES INCCSL · Entity 982VP & General CounselJanuary 28, 2026January 29, 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.

CARLISLE COMPANIES INC

Report date January 28, 2026 · Filed January 29, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect865 Reported balance After 2026-01-28 transaction · row 1
1 source row

Row 1 · 2026-01-28 · Grant · Acquired 865 · Balance 865

F1: Represents a grant of 865 restricted shares from the issuer as an executive officer of the issuer.

Employee Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $341.01 · Expires 2036-01-27Direct3,025 Reported balance After 2026-01-28 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2026-01-28 · Grant · Acquired 3,025 · Balance 3,025

F2: The option vests in three equal annual installments beginning on January 28, 2027.

Filing footnotes · ownership attribution and instrument terms

F1: Represents a grant of 865 restricted shares from the issuer as an executive officer of the issuer.

F2: The option vests in three equal annual installments beginning on January 28, 2027.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Summit Materials, Inc.

Report date February 10, 2025 · Filed February 10, 2025

Section 16 reporting ended · disclosed 2025-02-10. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeDirect0 Reported balance After 2025-02-10 transaction · row 1
1 source row

Row 1 · 2025-02-10 · Disposition to issuer · Disposed 44,693 · Balance 0

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2025-02-10 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2025-02-10 · Disposition to issuer · Disposed 2,696 · Balance 0

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2025-02-10 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2025-02-10 · Disposition to issuer · Disposed 5,708 · Balance 0

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2025-02-10 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2025-02-10 · Disposition to issuer · Disposed 13,589 · Balance 0

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2025-02-10 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2025-02-10 · Disposition to issuer · Disposed 15,289 · Balance 0

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Performance Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2025-02-10 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2025-02-10 · Disposition to issuer · Disposed 8,562 · Balance 0

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Performance Stock UnitsSEC Table II · derivative / convertible securityDirect0 Reported balance After 2025-02-10 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2025-02-10 · Disposition to issuer · Disposed 13,589 · Balance 0

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Filing footnotes · ownership attribution and instrument terms

F1: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

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
January 28, 2026 Filed Jan 29, 2026 21:03 UTC CARLISLE COMPANIES INC CSL · Entity 982 GrantEmployee Stock Option (Right to Buy) · Derivative 3,025 $0.00 Strike: $341.01 $0.00
Disclosure

SEC source: 0001854269-26-000002 · wk-form4_1769720621.xml · derivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,025

Underlying: Common Stock · 3,025 shares

Expires 2036-01-27

F2 · derivative.exercise_date: The option vests in three equal annual installments beginning on January 28, 2027.

Read SEC document
January 28, 2026 Filed Jan 29, 2026 21:03 UTC CARLISLE COMPANIES INC CSL · Entity 982 GrantCommon Stock 865 $0.00 $0.00
Disclosure

SEC source: 0001854269-26-000002 · wk-form4_1769720621.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · VP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 865

F1 · shares: Represents a grant of 865 restricted shares from the issuer as an executive officer of the issuer.

Read SEC document
February 10, 2025 Filed Feb 10, 2025 17:32 UTC Summit Materials, Inc. SUM · Entity 16259 Disposition to issuerPerformance Stock Units · Derivative 13,589 Not disclosed Not disclosed
Disclosure

SEC source: 0000950103-25-001817 · dp224671_4-gaskill.xml · derivative · entry 7

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 13,589 shares

Expires not disclosed

F1 · derivative.exercise_price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.exercise_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.expiration_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Read SEC document
February 10, 2025 Filed Feb 10, 2025 17:32 UTC Summit Materials, Inc. SUM · Entity 16259 Disposition to issuerPerformance Stock Units · Derivative 8,562 Not disclosed Not disclosed
Disclosure

SEC source: 0000950103-25-001817 · dp224671_4-gaskill.xml · derivative · entry 6

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 8,562 shares

Expires not disclosed

F1 · derivative.exercise_price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.exercise_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.expiration_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Read SEC document
February 10, 2025 Filed Feb 10, 2025 17:32 UTC Summit Materials, Inc. SUM · Entity 16259 Disposition to issuerRestricted Stock Units · Derivative 15,289 Not disclosed Not disclosed
Disclosure

SEC source: 0000950103-25-001817 · dp224671_4-gaskill.xml · derivative · entry 5

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 15,289 shares

Expires not disclosed

F1 · derivative.exercise_price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.exercise_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.expiration_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Read SEC document
February 10, 2025 Filed Feb 10, 2025 17:32 UTC Summit Materials, Inc. SUM · Entity 16259 Disposition to issuerRestricted Stock Units · Derivative 13,589 Not disclosed Not disclosed
Disclosure

SEC source: 0000950103-25-001817 · dp224671_4-gaskill.xml · derivative · entry 4

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 13,589 shares

Expires not disclosed

F1 · derivative.exercise_price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.exercise_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.expiration_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Read SEC document
February 10, 2025 Filed Feb 10, 2025 17:32 UTC Summit Materials, Inc. SUM · Entity 16259 Disposition to issuerRestricted Stock Units · Derivative 5,708 Not disclosed Not disclosed
Disclosure

SEC source: 0000950103-25-001817 · dp224671_4-gaskill.xml · derivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 5,708 shares

Expires not disclosed

F1 · derivative.exercise_price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.exercise_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.expiration_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Read SEC document
February 10, 2025 Filed Feb 10, 2025 17:32 UTC Summit Materials, Inc. SUM · Entity 16259 Disposition to issuerRestricted Stock Units · Derivative 2,696 Not disclosed Not disclosed
Disclosure

SEC source: 0000950103-25-001817 · dp224671_4-gaskill.xml · derivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 2,696 shares

Expires not disclosed

F1 · derivative.exercise_price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.exercise_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · derivative.expiration_date: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Read SEC document
February 10, 2025 Filed Feb 10, 2025 17:32 UTC Summit Materials, Inc. SUM · Entity 16259 Disposition to issuerClass A Common Stock 44,693 $52.50 $2,346,382.50
Disclosure

SEC source: 0000950103-25-001817 · dp224671_4-gaskill.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · shares: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

F1 · price: At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration and (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration.

Read SEC document
January 16, 2025 Filed Jan 17, 2025 17:27 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 3,850 $52.19 $200,931.50
Disclosure

SEC source: 0001628280-25-001874 · wk-form4_1737152814.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,693

Read SEC document
January 16, 2025 Filed Jan 17, 2025 17:27 UTC Summit Materials, Inc. SUM · Entity 16259 GrantClass A Common Stock 8,491 $0.00 $0.00
Disclosure

SEC source: 0001628280-25-001874 · wk-form4_1737152814.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,543

F1 · acquired: Reflects shares of Class A Common Stock earned and delivered on performance units previously granted based upon the satisfaction of certain performance criteria.

Read SEC document
January 15, 2025 Filed Jan 17, 2025 17:27 UTC Summit Materials, Inc. SUM · Entity 16259 GrantRestricted Stock Units · Derivative 15,289 $0.00 $0.00
Disclosure

SEC source: 0001628280-25-001874 · wk-form4_1737152814.xml · derivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,289

Underlying: Class A Common Stock · 15,289 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F3 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning on January 15, 2026.

F3 · derivative.expiration_date: These restricted stock units vest in three equal annual installments beginning on January 15, 2026.

Read SEC document
December 10, 2024 Filed Dec 11, 2024 16:08 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionOptions (right to buy) · Derivative 1,536 $0.00 Strike: $23.89 $0.00
Disclosure

SEC source: 0001628280-24-050766 · wk-form4_1733951306.xml · derivative · entry 4

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,536 shares

Expires 2027-02-28

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.

F3 · derivative.exercise_date: These options are fully vested.

Read SEC document
December 10, 2024 Filed Dec 11, 2024 16:08 UTC Summit Materials, Inc. SUM · Entity 16259 GiftClass A Common Stock 169 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-050766 · wk-form4_1733951306.xml · nonDerivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,052

Read SEC document
December 10, 2024 Filed Dec 11, 2024 16:08 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 1,536 $50.91 $78,197.76
Disclosure

SEC source: 0001628280-24-050766 · wk-form4_1733951306.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,221

F2 · balance_after: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $50.91 to $50.915, 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 sold at each separate price within the range set forth above. The Reporting Person remains within compliance of the Issuer's equity ownership guidelines.

Read SEC document
December 10, 2024 Filed Dec 11, 2024 16:08 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 1,536 $23.89 $36,695.04
Disclosure

SEC source: 0001628280-24-050766 · wk-form4_1733951306.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,757

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 · balance_after: Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on May 31, 2024 and November 30, 2024.

Read SEC document
March 07, 2024 Filed Mar 8, 2024 20:21 UTC Summit Materials, Inc. SUM · Entity 16259 GrantRestricted Stock Units · Derivative 13,589 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-010106 · wk-form4_1709947252.xml · derivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,589

Underlying: Class A Common Stock · 13,589 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F5 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2025.

F5 · derivative.expiration_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2025.

Read SEC document
March 07, 2024 Filed Mar 8, 2024 20:21 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 6,458 $42.39 $273,754.62
Disclosure

SEC source: 0001628280-24-010106 · wk-form4_1709947252.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,438

Read SEC document
March 07, 2024 Filed Mar 8, 2024 20:21 UTC Summit Materials, Inc. SUM · Entity 16259 GrantClass A Common Stock 14,759 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-010106 · wk-form4_1709947252.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,896

F1 · kind: Reflects shares of Class A Common Stock earned and delivered on performance units previously granted based upon the satisfaction of certain performance criteria.

F2 · balance_after: Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022.

F3 · balance_after: Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on April 14, 2022, October 18, 2022, May 28, 2023 and November 30, 2023.

Read SEC document
February 29, 2024 Filed Mar 4, 2024 18:20 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 2,854 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-008673 · wk-form4_1709594383.xml · derivative · entry 7

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,708

Underlying: Class A Common Stock · 2,854 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F7 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2024.

F7 · derivative.expiration_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2024.

Read SEC document
February 29, 2024 Filed Mar 4, 2024 18:20 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 2,696 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-008673 · wk-form4_1709594383.xml · derivative · entry 6

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,696

Underlying: Class A Common Stock · 2,696 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F6 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2023.

F6 · derivative.expiration_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2023.

Read SEC document
February 29, 2024 Filed Mar 4, 2024 18:20 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 3,061 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-008673 · wk-form4_1709594383.xml · derivative · entry 5

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 3,061 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F5 · derivative.exercise_date: The Reporting Person was granted 9,185 restricted stock units that vest in three equal annual installments beginning on February 28, 2022.

F5 · derivative.expiration_date: The Reporting Person was granted 9,185 restricted stock units that vest in three equal annual installments beginning on February 28, 2022.

Read SEC document
February 29, 2024 Filed Mar 4, 2024 18:20 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 3,856 $42.71 $164,689.76
Disclosure

SEC source: 0001628280-24-008673 · wk-form4_1709594383.xml · nonDerivative · entry 4

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,137

Read SEC document
February 29, 2024 Filed Mar 4, 2024 18:20 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 2,854 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-24-008673 · wk-form4_1709594383.xml · nonDerivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,993

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

Read SEC document
February 29, 2024 Filed Mar 4, 2024 18:20 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 2,696 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-24-008673 · wk-form4_1709594383.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,139

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

Read SEC document
February 29, 2024 Filed Mar 4, 2024 18:20 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 3,061 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-24-008673 · wk-form4_1709594383.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,443

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

F2 · balance_after: Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022.

F3 · balance_after: Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on April 14, 2022, October 18, 2022, May 28, 2023 and November 30, 2023.

Read SEC document
December 06, 2023 Filed Dec 6, 2023 19:14 UTC Summit Materials, Inc. SUM · Entity 16259 GiftClass A Common Stock 28 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-040964 · wk-form4_1701908049.xml · nonDerivative · entry 4

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,382

Read SEC document
December 06, 2023 Filed Dec 6, 2023 19:14 UTC Summit Materials, Inc. SUM · Entity 16259 GiftClass A Common Stock 14 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-040964 · wk-form4_1701908049.xml · nonDerivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,410

Read SEC document
December 06, 2023 Filed Dec 6, 2023 19:14 UTC Summit Materials, Inc. SUM · Entity 16259 GiftClass A Common Stock 28 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-040964 · wk-form4_1701908049.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,424

Read SEC document
December 06, 2023 Filed Dec 6, 2023 19:14 UTC Summit Materials, Inc. SUM · Entity 16259 GiftClass A Common Stock 154 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-040964 · wk-form4_1701908049.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,452

F1 · balance_after: Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022.

F2 · balance_after: Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on April 14, 2022, October 18, 2022, May 28, 2023 and November 20, 2023.

Read SEC document
February 28, 2023 Filed Mar 1, 2023 17:41 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 2,697 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-005897 · wf-form4_167771044875614.xml · derivative · entry 7

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,392

Underlying: Class A Common Stock · 2,697 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F7 · derivative.exercise_date: The Reporting Person was granted 8,089 restricted stock units that vest in three equal annual installments beginning on February 28, 2023.

F7 · derivative.expiration_date: The Reporting Person was granted 8,089 restricted stock units that vest in three equal annual installments beginning on February 28, 2023.

Read SEC document
February 28, 2023 Filed Mar 1, 2023 17:41 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 3,061 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-005897 · wf-form4_167771044875614.xml · derivative · entry 6

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,062

Underlying: Class A Common Stock · 3,061 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F6 · derivative.exercise_date: The Reporting Person was granted 9,185 restricted stock units that vest in three equal annual installments beginning on February 28, 2022.

F6 · derivative.expiration_date: The Reporting Person was granted 9,185 restricted stock units that vest in three equal annual installments beginning on February 28, 2022.

Read SEC document
February 28, 2023 Filed Mar 1, 2023 17:41 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 2,692 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-005897 · wf-form4_167771044875614.xml · derivative · entry 5

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 2,692 shares

Expires not disclosed

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.

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F5 · derivative.exercise_date: The Reporting Person was granted 8,077 restricted stock units that vest in three equal annual installments beginning on February 28, 2021.

F5 · derivative.expiration_date: The Reporting Person was granted 8,077 restricted stock units that vest in three equal annual installments beginning on February 28, 2021.

Read SEC document
February 28, 2023 Filed Mar 1, 2023 17:41 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 3,823 $29.54 $112,931.42
Disclosure

SEC source: 0001628280-23-005897 · wf-form4_167771044875614.xml · nonDerivative · entry 4

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,715

Read SEC document
February 28, 2023 Filed Mar 1, 2023 17:41 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 2,697 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-23-005897 · wf-form4_167771044875614.xml · nonDerivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,538

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

Read SEC document
February 28, 2023 Filed Mar 1, 2023 17:41 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 3,062 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-23-005897 · wf-form4_167771044875614.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,841

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

Read SEC document
February 28, 2023 Filed Mar 1, 2023 17:41 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 2,692 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-23-005897 · wf-form4_167771044875614.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,779

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

F2 · balance_after: Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022.

F3 · balance_after: Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on April 14, 2022 and October 18, 2022.

Read SEC document
February 22, 2023 Filed Feb 24, 2023 18:06 UTC Summit Materials, Inc. SUM · Entity 16259 GrantRestricted Stock Units · Derivative 8,562 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-005099 · wf-form4_167727994537792.xml · derivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,562

Underlying: Class A Common Stock · 8,562 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F2 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2024.

F2 · derivative.expiration_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2024.

Read SEC document
July 30, 2022 Filed Aug 1, 2022 18:29 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 6,985 $0.00 $0.00
Disclosure

SEC source: 0001628280-22-019989 · wf-form4_165939294743710.xml · derivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 6,985 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F4 · derivative.exercise_date: The Reporting Person was granted 13,971 restricted stock units that vest in two equal installments beginning on July 30, 2021.

F4 · derivative.expiration_date: The Reporting Person was granted 13,971 restricted stock units that vest in two equal installments beginning on July 30, 2021.

Read SEC document
July 30, 2022 Filed Aug 1, 2022 18:29 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 3,067 $27.51 $84,373.17
Disclosure

SEC source: 0001628280-22-019989 · wf-form4_165939294743710.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,414

Read SEC document
July 30, 2022 Filed Aug 1, 2022 18:29 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 6,985 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-019989 · wf-form4_165939294743710.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,481

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

F2 · balance_after: Includes 559 shares acquired through the Issuer's Employee Stock Purchase Plan on April 14, 2022.

Read SEC document
May 26, 2022 Filed May 26, 2022 16:35 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 8,104 $27.63 $223,913.52
Disclosure

SEC source: 0001628280-22-015479 · wf-form4_165359731467018.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,496

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $27.56 to $27.73, 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 sold at each separate price within the range set forth above. The Reporting Person remains within compliance of the Issuer's equity ownership guidelines

F2 · balance_after: Includes 559 shares acquired through the Issuer's Employee Stock Purchase Plan on 4/14/2022.

Read SEC document
March 01, 2022 Filed Mar 3, 2022 16:17 UTC Summit Materials, Inc. SUM · Entity 16259 GrantRestricted Stock Units · Derivative 8,089 $0.00 $0.00
Disclosure

SEC source: 0001628280-22-004909 · wf-form4_164634219587710.xml · derivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,089

Underlying: Class A Common Stock · 8,089 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A Common Stock"). The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F2 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2023.

F2 · derivative.expiration_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2023.

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February 28, 2022 Filed Mar 1, 2022 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 3,062 $0.00 $0.00
Disclosure

SEC source: 0001628280-22-004587 · wf-form4_164617556779809.xml · derivative · entry 7

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,123

Underlying: Class A Common Stock · 3,062 shares

Expires not disclosed

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_price: Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F5 · derivative.exercise_date: The Reporting Person was granted 9,185 restricted stock units that vest in three equal annual installments beginning on February 28, 2022.

F5 · derivative.expiration_date: The Reporting Person was granted 9,185 restricted stock units that vest in three equal annual installments beginning on February 28, 2022.

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February 28, 2022 Filed Mar 1, 2022 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 2,692 $0.00 $0.00
Disclosure

SEC source: 0001628280-22-004587 · wf-form4_164617556779809.xml · derivative · entry 6

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,692

Underlying: Class A Common Stock · 2,692 shares

Expires not disclosed

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_price: Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F4 · derivative.exercise_date: The Reporting Person was granted 8,077 restricted stock units that vest in three equal annual installments beginning on February 28, 2021.

F4 · derivative.expiration_date: The Reporting Person was granted 8,077 restricted stock units that vest in three equal annual installments beginning on February 28, 2021.

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February 28, 2022 Filed Mar 1, 2022 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 2,236 $0.00 $0.00
Disclosure

SEC source: 0001628280-22-004587 · wf-form4_164617556779809.xml · derivative · entry 5

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 2,236 shares

Expires not disclosed

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_price: Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.

F3 · derivative.exercise_date: The Reporting Person was granted 6,710 restricted stock units that vest in three equal annual installments beginning on February 28, 2020.

F3 · derivative.expiration_date: The Reporting Person was granted 6,710 restricted stock units that vest in three equal annual installments beginning on February 28, 2020.

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February 28, 2022 Filed Mar 1, 2022 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 2,427 $31.22 $75,770.94
Disclosure

SEC source: 0001628280-22-004587 · wf-form4_164617556779809.xml · nonDerivative · entry 4

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,001

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February 28, 2022 Filed Mar 1, 2022 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 3,062 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-004587 · wf-form4_164617556779809.xml · nonDerivative · entry 3

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,428

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

Read SEC document
February 28, 2022 Filed Mar 1, 2022 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 2,692 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-004587 · wf-form4_164617556779809.xml · nonDerivative · entry 2

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,366

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

Read SEC document
February 28, 2022 Filed Mar 1, 2022 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 2,236 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-004587 · wf-form4_164617556779809.xml · nonDerivative · entry 1

Gaskill Christopher Burke · CIK 0001854269 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,674

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 · price: Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

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.