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person · Reporting owner

Hill Thomas W.

Disclosed activity across 2 companies

Tapewire entity
45209
SEC CIK
0001440948

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Knife River CorpKNF · Entity 4128DirectorMay 20, 2026May 21, 2026
Summit Materials, Inc.SUM · Entity 16259Director · President & CEOJuly 20, 2020July 22, 2020

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.

Knife River Corp

Report date May 20, 2026 · Filed May 21, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect5,496 Reported balance After 2026-05-20 transaction · row 1
1 source row

Row 1 · 2026-05-20 · Grant · Acquired 2,040 · Balance 5,496

F1: Represents restricted stock units (RSUs) that vest on the day immediately prior to the date of the next Knife River Corporation (the "issuer") annual meeting of stockholders occurring after the date of grant and subject to the reporting person continuing in service on the board of directors of the issuer through such vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Filing footnotes · ownership attribution and instrument terms

F1: Represents restricted stock units (RSUs) that vest on the day immediately prior to the date of the next Knife River Corporation (the "issuer") annual meeting of stockholders occurring after the date of grant and subject to the reporting person continuing in service on the board of directors of the issuer through such vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Summit Materials, Inc.

Report date July 20, 2020 · Filed July 22, 2020

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
LP Units of Summit Materials Holdings L.P.SEC Table II · derivative / convertible securityDirect317,456 Reported balance After 2020-06-17 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2020-06-17 · Gift · Disposed 200,000 · Balance 317,456

F1: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

LP Units of Summit Materials Holdings L.P.SEC Table II · derivative / convertible securityIndirectSee Footnote226,969 Reported balance After 2020-06-17 transaction · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · 2020-06-17 · Gift · Acquired 200,000 · Balance 226,969

F1: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

F2: Reflects securities held by a trust for the benefit of Mr. Hill's family, for which Mr. Hill's spouse serves as trustee.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect150,916 Reported balance After 2020-07-20 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2020-07-20 · Grant · Acquired 150,916 · Balance 150,916

F3: 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 compensation committee.

F4: These restricted stock units vest in three equal annual installments beginning on July 20, 2021.

Filing footnotes · ownership attribution and instrument terms

F1: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.

F2: Reflects securities held by a trust for the benefit of Mr. Hill's family, for which Mr. Hill's spouse serves as trustee.

F3: 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 compensation committee.

F4: These restricted stock units vest in three equal annual installments beginning on July 20, 2021.

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
March 15, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 54,369 $30.31 $1,647,924.39
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 9

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 141,902

F1 · shares: The Board of Directors of the Issuer has instituted robust ownership guidelines for the Reporting Person, requiring that he hold a value of 6 times his base salary in the Issuer's equity. After the above reported sales the Reporting Person will hold almost 34 times his base salary in the Issuer's equity (using the closing price of $31.81 on March 13, 2018, the day before the first sale reported). This calculation does not include unvested options or performance share units.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.25 to $30.38, 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.

Read SEC document
March 15, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 7,006 $31.07 $217,676.42
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 8

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 196,271

F1 · shares: The Board of Directors of the Issuer has instituted robust ownership guidelines for the Reporting Person, requiring that he hold a value of 6 times his base salary in the Issuer's equity. After the above reported sales the Reporting Person will hold almost 34 times his base salary in the Issuer's equity (using the closing price of $31.81 on March 13, 2018, the day before the first sale reported). This calculation does not include unvested options or performance share units.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.00 to $31.23, 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.

Read SEC document
March 15, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 61,375 $18.00 $1,104,750.00
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 7

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 203,277

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionOptions (right to buy) · Derivative 47,959 $0.00 Strike: $17.07 $0.00
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · derivative · entry 16

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,979

Underlying: Class A Common Stock · 47,959 shares

Expires 2026-02-24

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.

F12 · derivative.exercise_date: Reflects the grant of 71,938 options that vest in three equal annual installments beginning on February 24, 2017.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionOptions (right to buy) · Derivative 89,850 $0.00 Strike: $18.00 $0.00
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · derivative · entry 15

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 566,673

Underlying: Class A Common Stock · 89,850 shares

Expires 2025-03-11

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.

F11 · derivative.exercise_date: Reflects the grant of 726,933 options that vest in four equal annual installments beginning on March 11, 2016.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionOptions (right to buy) · Derivative 4,343 $0.00 Strike: $18.00 $0.00
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · derivative · entry 14

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 275,248

Underlying: Class A Common Stock · 4,343 shares

Expires 2025-03-11

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.

F10 · derivative.exercise_date: Reflects the grant of 559,181 options that vest in four equal annual installments beginning on March 11, 2016.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 123,104 $31.01 $3,817,455.04
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 6

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 141,902

F1 · shares: The Board of Directors of the Issuer has instituted robust ownership guidelines for the Reporting Person, requiring that he hold a value of 6 times his base salary in the Issuer's equity. After the above reported sales the Reporting Person will hold almost 34 times his base salary in the Issuer's equity (using the closing price of $31.81 on March 13, 2018, the day before the first sale reported). This calculation does not include unvested options or performance share units.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.80 to $31.26, 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.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 18,748 $31.60 $592,436.80
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 5

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 265,006

F1 · shares: The Board of Directors of the Issuer has instituted robust ownership guidelines for the Reporting Person, requiring that he hold a value of 6 times his base salary in the Issuer's equity. After the above reported sales the Reporting Person will hold almost 34 times his base salary in the Issuer's equity (using the closing price of $31.81 on March 13, 2018, the day before the first sale reported). This calculation does not include unvested options or performance share units.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.50 to $31.98, 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.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 300 $31.26 $9,378.00
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 4

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 283,754

F1 · shares: The Board of Directors of the Issuer has instituted robust ownership guidelines for the Reporting Person, requiring that he hold a value of 6 times his base salary in the Issuer's equity. After the above reported sales the Reporting Person will hold almost 34 times his base salary in the Issuer's equity (using the closing price of $31.81 on March 13, 2018, the day before the first sale reported). This calculation does not include unvested options or performance share units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.25 to $31.28, 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.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 47,959 $17.07 $818,660.13
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 3

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 284,054

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 89,850 $18.00 $1,617,300.00
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 236,095

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 14, 2018 Filed Mar 16, 2018 19:22 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 4,343 $18.00 $78,174.00
Disclosure

SEC source: 0001104659-18-018405 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,245

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 13, 2018 Filed Mar 14, 2018 18:30 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $32.01 $198,462.00
Disclosure

SEC source: 0001104659-18-017534 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 141,902

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.76 to $32.27, 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.

Read SEC document
March 12, 2018 Filed Mar 14, 2018 18:30 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $31.73 $199,899.00
Disclosure

SEC source: 0001104659-18-017534 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 148,102

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.48 to $32.04, 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.

Read SEC document
February 28, 2018 Filed Mar 1, 2018 21:06 UTC Summit Materials, Inc. SUM · Entity 16259 GrantRestricted Stock Units · Derivative 51,757 $0.00 $0.00
Disclosure

SEC source: 0001104659-18-014213 · a4.xml · derivative · entry 7

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,757

Underlying: Class A Common Stock · 51,757 shares

Expires not disclosed

F6 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of 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 compensation committee.

F8 · derivative.exercise_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2019.

F8 · derivative.expiration_date: These restricted stock units vest in three equal annual installments beginning on February 28, 2019.

Read SEC document
February 28, 2018 Filed Mar 1, 2018 21:06 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 10,253 $0.00 $0.00
Disclosure

SEC source: 0001104659-18-014213 · a4.xml · derivative · entry 6

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,504

Underlying: Class A Common Stock · 10,253 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.

F6 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of 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 compensation committee.

F7 · derivative.exercise_date: On February 28, 2017, the Reporting Person was granted 30,757 restricted stock units that vest in three equal annual installments beginning on February 28, 2018.

F7 · derivative.expiration_date: On February 28, 2017, the Reporting Person was granted 30,757 restricted stock units that vest in three equal annual installments beginning on February 28, 2018.

Read SEC document
February 28, 2018 Filed Mar 1, 2018 21:06 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 2,497 $31.63 $78,980.11
Disclosure

SEC source: 0001104659-18-014213 · a4.xml · nonDerivative · entry 4

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,402

Read SEC document
February 28, 2018 Filed Mar 1, 2018 21:06 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 10,253 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-18-014213 · a4.xml · nonDerivative · entry 3

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 156,899

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 · 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, 2018 Filed Mar 1, 2018 21:06 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $32.02 $198,524.00
Disclosure

SEC source: 0001104659-18-014213 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,646

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.62 to $32.33, 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.

Read SEC document
February 27, 2018 Filed Mar 1, 2018 21:06 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $32.04 $201,852.00
Disclosure

SEC source: 0001104659-18-014213 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 152,846

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.77 to $32.51, 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.

Read SEC document
February 24, 2018 Filed Feb 27, 2018 18:06 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionRestricted Stock Units · Derivative 14,381 $0.00 $0.00
Disclosure

SEC source: 0001104659-18-012917 · a4.xml · derivative · entry 4

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,382

Underlying: Class A Common Stock · 14,381 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 settle in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's compensation committee.

F4 · derivative.exercise_date: On February 24, 2016, the Reporting Person was granted 43,145 restricted stock units that vest in three equal annual installments beginning on February 24, 2017.

F4 · derivative.expiration_date: On February 24, 2016, the Reporting Person was granted 43,145 restricted stock units that vest in three equal annual installments beginning on February 24, 2017.

Read SEC document
February 24, 2018 Filed Feb 27, 2018 18:06 UTC Summit Materials, Inc. SUM · Entity 16259 Tax withholdingClass A Common Stock 3,583 $31.74 $113,724.42
Disclosure

SEC source: 0001104659-18-012917 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,146

Read SEC document
February 24, 2018 Filed Feb 27, 2018 18:06 UTC Summit Materials, Inc. SUM · Entity 16259 Exercise / conversionClass A Common Stock 14,381 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-18-012917 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,729

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 09, 2018 Filed Feb 12, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 4,700 $28.52 $134,044.00
Disclosure

SEC source: 0001104659-18-008584 · a4.xml · nonDerivative · entry 4

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 148,348

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $28.05 to $29.04, 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.

Read SEC document
February 09, 2018 Filed Feb 12, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 1,500 $27.80 $41,700.00
Disclosure

SEC source: 0001104659-18-008584 · a4.xml · nonDerivative · entry 3

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 153,048

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $27.66 to $27.90, 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.

Read SEC document
February 08, 2018 Filed Feb 12, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,000 $29.39 $176,340.00
Disclosure

SEC source: 0001104659-18-008584 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,548

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $28.92 to $29.82, 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.

Read SEC document
February 08, 2018 Filed Feb 12, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 300 $28.66 $8,598.00
Disclosure

SEC source: 0001104659-18-008584 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,548

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $28.62 to $28.71, 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.

Read SEC document
January 23, 2018 Filed Jan 24, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 5,800 $32.06 $185,948.00
Disclosure

SEC source: 0001104659-18-003821 · a4.xml · nonDerivative · entry 3

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,848

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.585 to $32.54, 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.

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January 23, 2018 Filed Jan 24, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 400 $31.43 $12,572.00
Disclosure

SEC source: 0001104659-18-003821 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 166,648

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.40 to $34.445, 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.

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January 22, 2018 Filed Jan 24, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $31.04 $195,552.00
Disclosure

SEC source: 0001104659-18-003821 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 167,048

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.82 to $31.51, 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.

F3 · balance_after: Total holdings include shares of Class A common stock of the issuer received pursuant to a stock dividend paid on December 22, 2017.

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January 11, 2018 Filed Jan 12, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $31.45 $194,990.00
Disclosure

SEC source: 0001104659-18-002109 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 170,610

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.17 to $31.65, 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.

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January 10, 2018 Filed Jan 12, 2018 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $31.03 $195,489.00
Disclosure

SEC source: 0001104659-18-002109 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 176,810

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.94 to $31.16, 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.

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December 21, 2017 Filed Dec 22, 2017 18:01 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $30.58 $189,596.00
Disclosure

SEC source: 0001104659-17-074903 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 183,110

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.99 to $30.85, 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.

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December 20, 2017 Filed Dec 22, 2017 18:01 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $29.93 $188,559.00
Disclosure

SEC source: 0001104659-17-074903 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 189,310

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.63 to $30.18, 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.

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December 07, 2017 Filed Dec 8, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $30.65 $190,030.00
Disclosure

SEC source: 0001104659-17-072566 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 195,610

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.19 to $31.425, 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.

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December 06, 2017 Filed Dec 8, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $31.02 $195,426.00
Disclosure

SEC source: 0001104659-17-072566 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 201,810

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.64 to $31.23, 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.

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November 22, 2017 Filed Nov 24, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $29.86 $185,132.00
Disclosure

SEC source: 0001104659-17-070331 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 208,110

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.75 to $29.96, 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.

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November 21, 2017 Filed Nov 24, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $29.75 $187,425.00
Disclosure

SEC source: 0001104659-17-070331 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 214,310

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.56 to $29.90, 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.

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November 16, 2017 Filed Nov 20, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 ConversionLP Units of Summit Materials Holdings L.P. · Derivative 100,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-17-069675 · a4.xml · derivative · entry 3

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 592,456

Underlying: Class A Common Stock · 100,000 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.

F1 · derivative.exercise_price: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of the Issuer's Class A common stock on a one-for-one basis.

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November 16, 2017 Filed Nov 20, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 ConversionClass A Common Stock 100,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-17-069675 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 220,610

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: Pursuant to the terms of an exchange agreement, dated as of March 11, 2015, the limited partnership units of Summit Materials Holdings L.P. ("LP Units") reported herein are exchangeable from and after the first anniversary of the closing of the Issuer's initial public offering (subject to the terms of the exchange agreement and vesting requirements, including certain vesting events more fully described in the Issuer's Registration Statement on Form S-1 (File No. 333-201058)) for shares of the Issuer's Class A common stock on a one-for-one basis.

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November 09, 2017 Filed Nov 13, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $30.33 $188,046.00
Disclosure

SEC source: 0001104659-17-068038 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,610

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.09 to $30.50, 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.

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November 08, 2017 Filed Nov 13, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $30.19 $190,197.00
Disclosure

SEC source: 0001104659-17-068038 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,810

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.87 to $30.58, 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.

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October 24, 2017 Filed Oct 25, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $32.21 $199,702.00
Disclosure

SEC source: 0001104659-17-063773 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 133,110

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.97 to $32.60, 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.

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October 23, 2017 Filed Oct 25, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $32.04 $201,852.00
Disclosure

SEC source: 0001104659-17-063773 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,310

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.78 to $32.66, 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.

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October 04, 2017 Filed Oct 5, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $32.15 $199,330.00
Disclosure

SEC source: 0001104659-17-061177 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 145,610

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.78 to $32.315, 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.

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October 03, 2017 Filed Oct 5, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $32.07 $202,041.00
Disclosure

SEC source: 0001104659-17-061177 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,810

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.89 to $32.22, 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.

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September 22, 2017 Filed Sep 25, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $31.61 $195,982.00
Disclosure

SEC source: 0001104659-17-058685 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,110

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.51 to $31.79, 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.

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September 21, 2017 Filed Sep 25, 2017 18:00 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $31.51 $198,513.00
Disclosure

SEC source: 0001104659-17-058685 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 164,310

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $31.03 to $31.78, 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.

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September 07, 2017 Filed Sep 8, 2017 18:02 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,200 $30.04 $186,248.00
Disclosure

SEC source: 0001104659-17-056360 · a4.xml · nonDerivative · entry 2

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 360

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.89 to $30.33, 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.

F3 · ownership.nature: Reflects securities held by a trust for the benefit of Mr. Hill's family, for which Mr. Hill's spouse serves as trustee.

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September 06, 2017 Filed Sep 8, 2017 18:02 UTC Summit Materials, Inc. SUM · Entity 16259 SaleClass A Common Stock 6,300 $30.27 $190,701.00
Disclosure

SEC source: 0001104659-17-056360 · a4.xml · nonDerivative · entry 1

Hill Thomas W. · CIK 0001440948 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 6,560

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.00 to $30.50, 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.

F3 · ownership.nature: Reflects securities held by a trust for the benefit of Mr. Hill's family, for which Mr. Hill's spouse serves as trustee.

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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.