WCN

SEC source: 0001562180-18-000743 · primarydocument.xml · nonDerivative · entry 1

EDDIE DAVID · CIK 0001230346 · Sr. VP & Chief Accting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,251

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: Reporting person transferred 52,513 shares to his ex-wife pursuant to a domestic relations order. Reporting person no longer claims beneficial ownership of these shares.

F2 · balance_after: The number of common shares listed in Column 5 of Table 1 excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 25,389 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 3,588 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-18-000745 · primarydocument.xml · derivative · entry 5

JACKMAN WORTHING · CIK 0001229832 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,682

Underlying: Common Shares · 5,342 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_date: Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 11, 2016 and have a vesting schedule of 25% per year over a four-year period. The common shares are reported on Table 1.

F2 · derivative.expiration_date: Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 11, 2016 and have a vesting schedule of 25% per year over a four-year period. The common shares are reported on Table 1.

SEC source: 0001562180-18-000745 · primarydocument.xml · nonDerivative · entry 2

JACKMAN WORTHING · CIK 0001229832 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,998

F1 · kind: Represents shares withheld by the Issuer in satisfaction of the applicable withholding taxes due in connection with the vesting of restricted share units and delivery of the converted common shares.

SEC source: 0001562180-18-000745 · primarydocument.xml · nonDerivative · entry 1

JACKMAN WORTHING · CIK 0001229832 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,140

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.

SEC source: 0001562180-18-000740 · primarydocument.xml · derivative · entry 5

Black Matthew Stephen · CIK 0001544201 · Sr. Vice President - Tax

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,628

Underlying: Common Shares · 1,815 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_date: Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 11, 2016 and have a vesting schedule of 25% per year over a four-year period. The common shares are reported on Table 1.

F3 · derivative.expiration_date: Represents the conversion upon vesting of restricted share units into common shares of the Issuer. The restricted share units were awarded on February 11, 2016 and have a vesting schedule of 25% per year over a four-year period. The common shares are reported on Table 1.

SEC source: 0001562180-18-000740 · primarydocument.xml · nonDerivative · entry 2

Black Matthew Stephen · CIK 0001544201 · Sr. Vice President - Tax

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,855

F2 · kind: Represents shares withheld by the Issuer in satisfaction of the applicable withholding taxes due in connection with the vesting of restricted share units and delivery of the converted common shares.

SEC source: 0001562180-18-000740 · primarydocument.xml · nonDerivative · entry 1

Black Matthew Stephen · CIK 0001544201 · Sr. Vice President - Tax

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,369

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: The number of common shares listed in Column 5 of Table I excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 16,658 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 1,858 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-18-000360 · primarydocument.xml · nonDerivative · entry 1

BOUCK STEVEN F · CIK 0001064312 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 288,007

SEC source: 0001562180-17-003444 · primarydocument.xml · nonDerivative · entry 2

CHAMBLISS DARRELL W · CIK 0001064311 · EVP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

SEC source: 0001562180-17-003444 · primarydocument.xml · nonDerivative · entry 1

CHAMBLISS DARRELL W · CIK 0001064311 · EVP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,292

SEC source: 0001562180-17-003388 · primarydocument.xml · nonDerivative · entry 1

DAVIS ROBERT · CIK 0001247175 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,598

F1 · balance_after: The number of common shares listed in Column 5 of Table I excludes the number of unvested restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 982 RSUs and 787 previously reported deferred share units ("DSUs"). RSUs vest into an equal number of the Issuer's common shares and DSUs are settled in cash upon the occurrence of certain events, including the reporting person's retirement, and generally do not expire. The reporting person will report his RSUs separately and will continue to report his DSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-18-000296 · primarydocument.xml · nonDerivative · entry 1

MITTELSTAEDT RONALD J · CIK 0001064299 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 110,984

F1 · balance_after: The number of common shares listed in Column 5 of Table 1 excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 5, the reporting person owns an additional 111,175 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 17,083 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

F2 · balance_after: Executive officers of Old Waste Connections, in years prior to 2015, were able to voluntarily defer receipt of RSU grants under Old Waste Connections' Nonqualified Deferred Compensation Plan, which plan was assumed by New Waste Connections on June 1, 2016 in connection with the Progressive Waste acquisition. The reporting person holds an additional 180,530 RSUs under the Nonqualified Deferred Compensation Plan. The RSUs held under the Nonqualified Deferred Compensation Plan are not considered common shares of the Issuer that are beneficially owned for SEC disclosure purposes. They ultimately are settled in common shares of the Issuer, and they represent an investment risk in the performance of the Issuer's common shares.

SEC source: 0001562180-18-000302 · primarydocument.xml · nonDerivative · entry 1

HALL DAVID M · CIK 0001089079 · Sr. Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,778

F1 · kind: Reporting person transferred 4,888 shares to his ex-wife pursuant to a domestic relations order. Reporting person no longer claims beneficial ownership of these shares.

F2 · balance_after: The number of common shares listed in Column 5 of Table 1 excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 5, the reporting person owns an additional 21,464 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 3,250 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-17-002600 · primarydocument.xml · nonDerivative · entry 1

GUILLET EDWARD E · CIK 0001203079 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,535

F1 · balance_after: The number of common shares listed in Column 5 of Table 1 excludes the number of unvested restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 982 RSUs. The reporting person will report his RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-17-002589 · primarydocument.xml · nonDerivative · entry 1

CHAMBLISS DARRELL W · CIK 0001064311 · EVP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,625

F1 · balance_after: The number of common shares listed in Column 5 of Table 1 excludes the number of unvested performance-based restricted share units ("PSUs"), and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 40,553 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period), and 6,030 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

F2 · balance_after: The number of common shares listed in Column 5 of Table 1 also exclude the number of restricted share units to be settled pursuant to an election made in connection with the Issuer's nonqualified deferred compensation plan. As of the date of this Form 4, the reporting person owns an additional 37,569 deferred restricted share units. The reporting person will report these units separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-17-002586 · primarydocument.xml · nonDerivative · entry 1

LITTLE JAMES · CIK 0001130416 · Sr. Vice President Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,477

F1 · balance_after: The number of common shares listed in Column 5 of Table 1 excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 27,162 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 3,927 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-17-002552 · primarydocument.xml · nonDerivative · entry 1

JACKMAN WORTHING · CIK 0001229832 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 96,798

F1 · balance_after: The number of common shares listed in Column 5 of Table I excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 46,320 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 6,612 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-18-000295 · primarydocument.xml · nonDerivative · entry 1

Shea Patrick James · CIK 0001428227 · Sr. VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,352

SEC source: 0001562180-17-002226 · primarydocument.xml · nonDerivative · entry 1

BOUCK STEVEN F · CIK 0001064312 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 192,225

F1 · balance_after: The number of common shares listed in Column 5 of Table 1 excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 36,149 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 5,481 RSUs. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001562180-17-002222 · primarydocument.xml · nonDerivative · entry 1

Lee Susan · CIK 0001673407 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,079

SEC source: 0001144204-17-031483 · v468629_4.xml · nonDerivative · entry 1

HARLAN MICHAEL W · CIK 0001064313 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,536

F1 · balance_after: The number of common shares listed in Column 5 of Table I excludes the number of unvested restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 655 RSUs and 535 previously reported deferred share units ("DSUs"). RSUs vest into an equal number of the Issuer's common shares and DSUs are settled in cash upon the occurrence of certain events, including the reporting person's retirement, and generally do not expire. The reporting person will report his RSUs separately and will continue to report his DSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001144204-17-031314 · v468564_form4.xml · nonDerivative · entry 3

Shea Patrick James · CIK 0001428227 · Sr. VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,248

F1 · balance_after: The number of common shares listed in Column 5 of Table I excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 18,014 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount, depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 2,028 RSUs. PSUs and RSUs are exercisable in cash, an equal number of the Issuer's common shares, or a combination thereof. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001144204-17-031314 · v468564_form4.xml · nonDerivative · entry 2

Shea Patrick James · CIK 0001428227 · Sr. VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,248

F1 · balance_after: The number of common shares listed in Column 5 of Table I excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 18,014 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount, depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 2,028 RSUs. PSUs and RSUs are exercisable in cash, an equal number of the Issuer's common shares, or a combination thereof. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001144204-17-031314 · v468564_form4.xml · nonDerivative · entry 1

Shea Patrick James · CIK 0001428227 · Sr. VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,248

F1 · balance_after: The number of common shares listed in Column 5 of Table I excludes the number of unvested performance-based restricted share units ("PSUs") and restricted share units ("RSUs") previously granted by Waste Connections, Inc. (the "Issuer") to the reporting person. As of the date of this Form 4, the reporting person owns an additional 18,014 PSUs (with the number of units that actually vest at the end of each applicable performance period being 0% to 250% of the scheduled amount, depending on the terms of the PSU and the extent to which the Issuer meets or exceeds certain performance goals at the end of each year during the performance period) and 2,028 RSUs. PSUs and RSUs are exercisable in cash, an equal number of the Issuer's common shares, or a combination thereof. The reporting person will report his PSUs and RSUs separately in Table II of each subsequent Form 4 filed by the reporting person.

SEC source: 0001144204-17-028004 · v467234_4.xml · nonDerivative · entry 2

Lee Susan · CIK 0001673407 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,279

F1 · price: For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars based on the Bank of Canada daily noon exchange rate for each transaction date, which was the same for each day: CAD$1.00 = US$0.736.

SEC source: 0001144204-17-028004 · v467234_4.xml · nonDerivative · entry 1

Lee Susan · CIK 0001673407 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,679

F1 · price: For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars based on the Bank of Canada daily noon exchange rate for each transaction date, which was the same for each day: CAD$1.00 = US$0.736.

SEC source: 0001562180-17-001351 · primarydocument.xml · nonDerivative · entry 1

JACKMAN WORTHING · CIK 0001229832 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 119,818

F1 · shares: Represents shares withheld by the Company from an award of restricted stock units in satisfaction of the applicable withholding taxes due as a result of the end of the deferral period of those restricted stock units, through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds a portion of the vested shares issuable as a result of reaching the previously specified in-service date of shares deferred under the Company's Deferred Compensation Program with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

F2 · balance_after: Total includes an increase of 63 shares to correct a clerical error from previous filing.

SEC source: 0001562180-17-001252 · primarydocument.xml · nonDerivative · entry 1

LITTLE JAMES · CIK 0001130416 · Sr. Vice President Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,204

F1 · balance_after: Beneficial Ownership number increased by 67 shares to correct clerical error on last filing.

SEC source: 0001562180-17-001126 · primarydocument.xml · nonDerivative · entry 1

DAVIS ROBERT · CIK 0001247175 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,521

SEC source: 0001562180-17-000962 · primarydocument.xml · nonDerivative · entry 3

HALL DAVID M · CIK 0001089079 · Sr. Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,255

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000963 · primarydocument.xml · nonDerivative · entry 4

MITTELSTAEDT RONALD J · CIK 0001064299 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 318,088

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000963 · primarydocument.xml · nonDerivative · entry 3

MITTELSTAEDT RONALD J · CIK 0001064299 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 320,761

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000964 · primarydocument.xml · nonDerivative · entry 3

BOUCK STEVEN F · CIK 0001064312 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 248,981

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000966 · primarydocument.xml · nonDerivative · entry 3

CHAMBLISS DARRELL W · CIK 0001064311 · EVP & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 147,134

SEC source: 0001562180-17-000967 · primarydocument.xml · nonDerivative · entry 3

LITTLE JAMES · CIK 0001130416 · Sr. Vice President Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,245

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000959 · primarydocument.xml · nonDerivative · entry 3

Shea Patrick James · CIK 0001428227 · Sr. VP, General Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,221

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000965 · primarydocument.xml · nonDerivative · entry 3

JACKMAN WORTHING · CIK 0001229832 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 128,673

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000961 · primarydocument.xml · nonDerivative · entry 3

EDDIE DAVID · CIK 0001230346 · Sr. VP & Chief Accting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,184

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000960 · primarydocument.xml · nonDerivative · entry 3

Black Matthew Stephen · CIK 0001544201 · Sr. Vice President - Tax

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,004

F3 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

SEC source: 0001562180-17-000962 · primarydocument.xml · nonDerivative · entry 2

HALL DAVID M · CIK 0001089079 · Sr. Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,965

F2 · price: Represents a grant of performance-based restricted share units under the Waste Connections, Inc. (the "Company") 2016 Incentive Award Plan (the "2016 Plan"). The target number of units is presented in the table. Subject to certain continued employment conditions and subject to accelerated vesting in certain circumstances, the number of units that actually vest at the end of the three-year performance period will be 0% to 250% of the scheduled amount, depending on the extent to which the Company meets or exceeds certain performance goals at the end of each year during the performance period. The maximum number of units that may vest at the end of the three-year performance period is 4608 (250% of the target number). Vested restricted share units will be paid in cash, an equal number of shares of the Company's common shares, or a combination thereof.

SEC source: 0001562180-17-000962 · primarydocument.xml · nonDerivative · entry 1

HALL DAVID M · CIK 0001089079 · Sr. Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,122

F1 · price: Represents a grant of performance-based restricted share units under the Waste Connections, Inc. (the "Company") 2016 Incentive Award Plan (the "2016 Plan"). The target number of units is presented in the table. Subject to certain continued employment conditions and subject to accelerated vesting in certain circumstances, the number of units that will actually vest over the four year vesting period will be either 0% or 100% of the scheduled amount, depending on whether the Company meets certain performance goals at the end of the first year of the vesting period. If the Company meets its performance goals at the end of the first year vesting period, then the units shall vest in four equal annual installments. Vested restricted share units will be paid in cash, an equal number of shares of the Company's common shares, or a combination thereof.

SEC source: 0001562180-17-000963 · primarydocument.xml · nonDerivative · entry 2

MITTELSTAEDT RONALD J · CIK 0001064299 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 320,907

F2 · price: Represents a grant of performance-based restricted share units under the Waste Connections, Inc. (the "Company") 2016 Incentive Award Plan (the "2016 Plan"). The target number of units is presented in the table. Subject to certain continued employment conditions and subject to accelerated vesting in certain circumstances, the number of units that actually vest at the end of the three-year performance period will be 0% to 250% of the scheduled amount, depending on the extent to which the Company meets or exceeds certain performance goals at the end of each year during the performance period. The maximum number of units that may vest at the end of the three-year performance period is 22,330 (250% of the target number). Vested restricted share units will be paid in cash, an equal number of shares of the Company's common shares, or a combination thereof.

SEC source: 0001562180-17-000963 · primarydocument.xml · nonDerivative · entry 1

MITTELSTAEDT RONALD J · CIK 0001064299 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 311,975

F1 · price: Represents a grant of performance-based restricted share units under the Waste Connections, Inc. (the "Company") 2016 Incentive Award Plan (the "2016 Plan"). The target number of units is presented in the table. Subject to certain continued employment conditions and subject to accelerated vesting in certain circumstances, the number of units that will actually vest over the four year vesting period will be either 0% or 100% of the scheduled amount, depending on whether the Company meets certain performance goals at the end of the first year of the vesting period. If the Company meets its performance goals at the end of the first year vesting period, then the units shall vest in four equal annual installments. Vested restricted share units will be paid in cash, an equal number of shares of the Company's common shares, or a combination thereof.

SEC source: 0001562180-17-000969 · primarydocument.xml · derivative · entry 3

HARLAN MICHAEL W · CIK 0001064313 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 525

Underlying: Common Shares · 525 shares

Expires not disclosed

F4 · derivative.exercise_price: One Deferred Stock Unit ("DSU") is the economic equivalent of one common share of Waste Connections, Inc. ("WCN"), granted pursuant to Waste Connections, Inc. 2016 Incentive Award Plan. DSU units will be settled in cash upon distribution to the reporting person upon such person's retirement and generally do not expire.

F4 · derivative.exercise_date: One Deferred Stock Unit ("DSU") is the economic equivalent of one common share of Waste Connections, Inc. ("WCN"), granted pursuant to Waste Connections, Inc. 2016 Incentive Award Plan. DSU units will be settled in cash upon distribution to the reporting person upon such person's retirement and generally do not expire.

F4 · derivative.expiration_date: One Deferred Stock Unit ("DSU") is the economic equivalent of one common share of Waste Connections, Inc. ("WCN"), granted pursuant to Waste Connections, Inc. 2016 Incentive Award Plan. DSU units will be settled in cash upon distribution to the reporting person upon such person's retirement and generally do not expire.

SEC source: 0001562180-17-000969 · primarydocument.xml · nonDerivative · entry 2

HARLAN MICHAEL W · CIK 0001064313 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,591

F2 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

F3 · price: For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars based on the Bank of Canada daily noon exchange rate for February 24, 2017, Cdn.$1.00 = US$0.7631

SEC source: 0001562180-17-000969 · primarydocument.xml · nonDerivative · entry 1

HARLAN MICHAEL W · CIK 0001064313 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,928

F1 · price: This represents an award of restricted stock units. Each restricted stock unit represents a contingent right to receive one share of the issuer's common shares. Subject to the reporting person's continued service with the issuer, the award shall vest in 2 equal annual installments, commencing on the date of the grant.

SEC source: 0001562180-17-000964 · primarydocument.xml · nonDerivative · entry 2

BOUCK STEVEN F · CIK 0001064312 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 251,634

F2 · price: Represents a grant of performance-based restricted share units under the Waste Connections, Inc. (the "Company") 2016 Incentive Award Plan (the "2016 Plan"). The target number of units is presented in the table. Subject to certain continued employment conditions and subject to accelerated vesting in certain circumstances, the number of units that actually vest at the end of the three-year performance period will be 0% to 250% of the scheduled amount, depending on the extent to which the Company meets or exceeds certain performance goals at the end of each year during the performance period. The maximum number of units that may vest at the end of the three-year performance period is 11,430 (250% of the target number). Vested restricted share units will be paid in cash, an equal number of shares of the Company's common shares, or a combination thereof.

SEC source: 0001562180-17-000964 · primarydocument.xml · nonDerivative · entry 1

BOUCK STEVEN F · CIK 0001064312 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 247,062

F1 · price: Represents a grant of performance-based restricted share units under the Waste Connections, Inc. (the "Company") 2016 Incentive Award Plan (the "2016 Plan"). The target number of units is presented in the table. Subject to certain continued employment conditions and subject to accelerated vesting in certain circumstances, the number of units that will actually vest over the four year vesting period will be either 0% or 100% of the scheduled amount, depending on whether the Company meets certain performance goals at the end of the first year of the vesting period. If the Company meets its performance goals at the end of the first year vesting period, then the units shall vest in four equal annual installments. Vested restricted share units will be paid in cash, an equal number of shares of the Company's common shares, or a combination thereof.

SEC source: 0001562180-17-000958 · primarydocument.xml · derivative · entry 3

RAZZOUK WILLIAM J · CIK 0001064306 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 525

Underlying: Common Shares · 525 shares

Expires not disclosed

F4 · derivative.exercise_price: One Deferred Stock Unit ("DSU") is the economic equivalent of one common share of Waste Connections, Inc. ("WCN"), granted pursuant to Waste Connections, Inc. 2016 Incentive Award Plan. DSU units will be settled in cash upon distribution to the reporting person upon such person's retirement and generally do not expire.

F4 · price: One Deferred Stock Unit ("DSU") is the economic equivalent of one common share of Waste Connections, Inc. ("WCN"), granted pursuant to Waste Connections, Inc. 2016 Incentive Award Plan. DSU units will be settled in cash upon distribution to the reporting person upon such person's retirement and generally do not expire.

F4 · derivative.exercise_date: One Deferred Stock Unit ("DSU") is the economic equivalent of one common share of Waste Connections, Inc. ("WCN"), granted pursuant to Waste Connections, Inc. 2016 Incentive Award Plan. DSU units will be settled in cash upon distribution to the reporting person upon such person's retirement and generally do not expire.

F4 · derivative.expiration_date: One Deferred Stock Unit ("DSU") is the economic equivalent of one common share of Waste Connections, Inc. ("WCN"), granted pursuant to Waste Connections, Inc. 2016 Incentive Award Plan. DSU units will be settled in cash upon distribution to the reporting person upon such person's retirement and generally do not expire.

SEC source: 0001562180-17-000958 · primarydocument.xml · nonDerivative · entry 2

RAZZOUK WILLIAM J · CIK 0001064306 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,023

F2 · shares: Represents shares withheld by the Company from an award of restricted share units in satisfaction of the applicable withholding taxes due as a result of the vesting of those restricted share units through an automatic share withholding procedure. Pursuant to this procedure, the Company withholds as the units vest a portion of the vested shares issuable under the award with a fair market value (measured as of the vesting date) equal to the amount of such withholding taxes.

F3 · price: For purposes of this disclosure, Canadian dollar amounts have been converted to U.S. dollars based on the Bank of Canada daily noon exchange rate for February 24, 2017, Cdn.$1.00 = US$0.7631