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person · Reporting owner

Cashell Michael R

Disclosed activity across 2 companies

Tapewire entity
63881
SEC CIK
0001522052

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
NORTHWESTERN CORPNWE · Entity 112257Vice President - TransmissionMarch 07, 2023March 09, 2023
NorthWestern Energy Group, Inc.NWE · Entity 4012VP - TransmissionFebruary 27, 2026March 02, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

NORTHWESTERN CORP

Report date March 07, 2023 · Filed March 09, 2023

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect19,342 Reported balance After 2023-03-07 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2023-03-07 · Grant · Acquired 1,100 · Balance 19,342

F1: Represents restricted share units, subject to a three-year cliff vesting period, acquired upon grant of award under the company's 2023 Long-Term Incentive Program.

F2: Total shares owned includes shares acquired through dividend reinvestment.

Filing footnotes · ownership attribution and instrument terms

F1: Represents restricted share units, subject to a three-year cliff vesting period, acquired upon grant of award under the company's 2023 Long-Term Incentive Program.

F2: Total shares owned includes shares acquired through dividend reinvestment.

NorthWestern Energy Group, Inc.

Report date February 27, 2026 · Filed March 02, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect27,342 Ending reported balance After 2026-02-27 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-02-27 · Grant · Acquired 2,453 · Balance 28,105

F1: Shares acquired upon 12/31/25 vesting of performance units granted under the company's 2023 Long-Term Incentive Program.

F2: Share price is the closing share price on 2/11/26, the date when the company's Board of Directors approved payout and vesting of the award.

Row 2 · 2026-02-27 · Tax withholding · Disposed 763 · Balance 27,342

Filing footnotes · ownership attribution and instrument terms

F1: Shares acquired upon 12/31/25 vesting of performance units granted under the company's 2023 Long-Term Incentive Program.

F2: Share price is the closing share price on 2/11/26, the date when the company's Board of Directors approved payout and vesting of the award.

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
February 27, 2026 Filed Mar 2, 2026 16:05 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 Tax withholdingCommon Stock 763 $0.00 $0.00
Disclosure

SEC source: 0001522052-26-000006 · wk-form4_1772485534.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,342

Read SEC document
February 27, 2026 Filed Mar 2, 2026 16:05 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 GrantCommon Stock 2,453 $68.45 $167,907.85
Disclosure

SEC source: 0001522052-26-000006 · wk-form4_1772485534.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,105

F1 · shares: Shares acquired upon 12/31/25 vesting of performance units granted under the company's 2023 Long-Term Incentive Program.

F2 · price: Share price is the closing share price on 2/11/26, the date when the company's Board of Directors approved payout and vesting of the award.

Read SEC document
February 24, 2026 Filed Feb 25, 2026 15:48 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 Tax withholdingCommon Stock 31 $0.00 $0.00
Disclosure

SEC source: 0001522052-26-000004 · wk-form4_1772052478.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,652

Read SEC document
February 24, 2026 Filed Feb 25, 2026 15:48 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 GrantCommon Stock 1,329 $68.45 $90,970.05
Disclosure

SEC source: 0001522052-26-000004 · wk-form4_1772052478.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,683

F1 · security: Includes underlying deferred share units that are issuable subsequent to the reporting person's termination of service from the company.

F2 · shares: Shares acquired upon 12/31/25 vesting of performance units granted under the company's 2020 Executive Retirement-Retention Plan.

F3 · price: Share price is the closing share price on 2/11/26, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Includes deferred shares acquired from dividend reinvestment.

Read SEC document
January 22, 2026 Filed Jan 23, 2026 18:03 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 Tax withholdingCommon Stock 381 $64.54 $24,589.74
Disclosure

SEC source: 0001522052-26-000002 · wk-form4_1769209433.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,354

Read SEC document
May 02, 2025 Filed May 2, 2025 15:52 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 SaleCommon Stock 2,349 $58.03 $136,312.47
Disclosure

SEC source: 0001993004-25-000088 · wk-form4_1746215547.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,088

F1 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 15:03 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 GrantCommon Stock 1,440 $0.00 $0.00
Disclosure

SEC source: 0001993004-25-000037 · wk-form4_1741205033.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,227

F4 · shares: Represents restricted share units, subject to a three-year cliff vesting period, acquired upon grant of award under the company's 2025 Long-Term Incentive Program.

F3 · balance_after: Includes deferred share units and shares acquired from dividend reinvestment.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 15:03 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 GrantCommon Stock 1,551 $54.12 $83,940.12
Disclosure

SEC source: 0001993004-25-000037 · wk-form4_1741205033.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,787

F1 · shares: Shares acquired upon 12/31/24 vesting of performance units granted under the company's 2022 Long-Term Incentive Program.

F2 · price: Share price is the closing share price on 2/12/25, the date when the company's Board of Directors approved payout and vesting of the award.

F3 · balance_after: Includes deferred share units and shares acquired from dividend reinvestment.

Read SEC document
March 13, 2024 Filed Mar 14, 2024 10:51 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 GrantCommon Stock 1,628 $0.00 $0.00
Disclosure

SEC source: 0000073088-24-000063 · wk-form4_1710427907.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,358

F1 · shares: Represents restricted share units, subject to a three-year cliff vesting period, acquired upon grant of award under the company's 2024 Long-Term Incentive Program.

F2 · balance_after: Includes shares acquired from dividend reinvestment.

Read SEC document
March 05, 2024 Filed Mar 6, 2024 16:51 UTC NorthWestern Energy Group, Inc. NWE · Entity 4012 GrantCommon Stock 571 $46.70 $26,665.70
Disclosure

SEC source: 0000073088-24-000043 · wk-form4_1709761887.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · VP - Transmission

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,730

F1 · shares: Shares acquired upon 12/31/23 vesting of performance units granted under the company's 2021 Long-Term Incentive Program.

F2 · price: Share price is the closing share price on 2/14/24, the date when the company's Board of Directors approved payout and vesting of the award.

F3 · balance_after: Includes shares acquired from dividend reinvestment.

Read SEC document
March 07, 2023 Filed Mar 9, 2023 13:03 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 1,100 $0.00 $0.00
Disclosure

SEC source: 0000073088-23-000058 · wf-form4_167838499720952.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,342

F1 · shares: Represents restricted share units, subject to a three-year cliff vesting period, acquired upon grant of award under the company's 2023 Long-Term Incentive Program.

F2 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
March 03, 2023 Filed Mar 7, 2023 14:57 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 227 $56.92 $12,920.84
Disclosure

SEC source: 0000073088-23-000050 · wf-form4_167821904123088.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,242

F5 · shares: Shares acquired upon 12/31/22 vesting of performance units granted under the company's 2020 Long-Term Incentive Program.

F3 · price: Share price is the closing share price on 2/16/2023, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
March 03, 2023 Filed Mar 7, 2023 14:57 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 702 $56.92 $39,957.84
Disclosure

SEC source: 0000073088-23-000050 · wf-form4_167821904123088.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,015

F1 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F2 · shares: Shares acquired upon 12/31/22 vesting of performance units granted under the company's 2017 Executive Retirement-Retention Program.

F3 · price: Share price is the closing share price on 2/16/2023, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
December 13, 2022 Filed Dec 15, 2022 17:55 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 1,333 $0.00 $0.00
Disclosure

SEC source: 0000073088-22-000168 · wf-form4_167114491483307.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,145

F1 · security: Represents the number of restricted share units, subject to a five-year cliff vesting period, acquired upon grant of award under the company's 2022 Executive Retirement-Retention Program.

F2 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
October 28, 2022 Filed Oct 28, 2022 13:07 UTC NORTHWESTERN CORP NWE · Entity 112257 SaleCommon Stock 1,702 $53.19 $90,529.38
Disclosure

SEC source: 0000073088-22-000144 · wf-form4_166697683639605.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,812

F1 · price: This transaction was executed in multiple trades at prices ranging from $53.16 to $53.23. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes the provide upon request by the SEC staff, the issuer or a security holder of the issuer, full information regarding the number of shares and prices at which the transaction was effected.

F2 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

Read SEC document
February 28, 2022 Filed Mar 2, 2022 18:06 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 845 $56.52 $47,759.40
Disclosure

SEC source: 0000073088-22-000073 · wf-form4_164626239939042.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,994

F1 · shares: Shares acquired upon 12/31/21 vesting of performance units granted under the company's 2019 Long-Term Incentive Program.

F2 · price: Share price is the closing share price on 2/10/2022, the date when the company's Board of Directors approved payout and vesting of the award.

F3 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 24, 2022 Filed Feb 25, 2022 12:55 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 793 $56.52 $44,820.36
Disclosure

SEC source: 0000073088-22-000041 · wf-form4_164581172115440.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,149

F1 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F2 · shares: Shares acquired upon 12/31/21 vesting of performance units granted under the company's 2016 Executive Retirement-Retention Program.

F3 · price: Share price is the closing share price on 2/10/2022, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 24, 2021 Filed Feb 26, 2021 17:25 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 857 $57.47 $49,251.79
Disclosure

SEC source: 0000073088-21-000050 · wf-form4_161437827280104.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,770

F5 · shares: Shares acquired upon 12/31/20 vesting of performance units granted under the company's 2018 Long-Term Incentive Program.

F3 · price: Share price is the closing share price on 2/11/2021, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 24, 2021 Filed Feb 26, 2021 17:25 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 798 $57.47 $45,861.06
Disclosure

SEC source: 0000073088-21-000050 · wf-form4_161437827280104.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,914

F1 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F2 · shares: Shares acquired upon 12/31/20 vesting of performance units granted under the company's 2015 Executive Retirement-Retention Program.

F3 · price: Share price is the closing share price on 2/11/2021, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 27, 2020 Filed Feb 27, 2020 11:33 UTC NORTHWESTERN CORP NWE · Entity 112257 SaleCommon Stock 1,774 $77.13 $136,828.62
Disclosure

SEC source: 0000073088-20-000060 · wf-form4_158282121648890.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,561

F1 · price: This transaction was executed in multiple trades at prices ranging from $77.13 to $77.15. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 26, 2020 Filed Feb 26, 2020 17:00 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 1,774 $77.46 $137,414.04
Disclosure

SEC source: 0000073088-20-000050 · wf-form4_158275438312758.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,335

F5 · shares: Shares acquired upon 12/31/19 vesting of performance units granted under the company's 2017 Long-Term Incentive Program.

F3 · price: Share price is the closing share price on 2/12/2020, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 24, 2020 Filed Feb 26, 2020 17:00 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 697 $77.46 $53,989.62
Disclosure

SEC source: 0000073088-20-000050 · wf-form4_158275438312758.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,561

F1 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F2 · shares: Shares acquired upon 12/31/19 vesting of performance units granted under the company's 2014 Executive Retirement-Retention Program.

F3 · price: Share price is the closing share price on 2/12/2020, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 27, 2019 Filed Feb 28, 2019 16:49 UTC NORTHWESTERN CORP NWE · Entity 112257 SaleCommon Stock 1,656 $67.85 $112,359.60
Disclosure

SEC source: 0000073088-19-000051 · wf-form4_155139055936225.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,496

F1 · price: This transaction was executed in multiple trades at prices ranging from $67.82 to $67.87. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 25, 2019 Filed Feb 27, 2019 12:30 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 387 $64.98 $25,147.26
Disclosure

SEC source: 0000073088-19-000037 · wf-form4_155128859070169.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,152

F4 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F5 · shares: Shares acquired upon 12/31/18 vesting of performance units granted under the company's 2013 Executive Retirement-Retention Plan.

F2 · price: Share price is the closing share price on 2/11/19, the date when the company's Board of Directors approved payout and vesting of the award.

F3 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
February 25, 2019 Filed Feb 27, 2019 12:30 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 1,268 $64.98 $82,394.64
Disclosure

SEC source: 0000073088-19-000037 · wf-form4_155128859070169.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,765

F1 · shares: Shares acquired upon 12/31/18 vesting of performance units granted under the company's 2016 Long-Term Incentive Plan.

F2 · price: Share price is the closing share price on 2/11/19, the date when the company's Board of Directors approved payout and vesting of the award.

F3 · balance_after: Total shares owned includes shares acquired through dividend reinvestment.

Read SEC document
March 08, 2018 Filed Mar 12, 2018 12:52 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 15 $52.22 $783.30
Disclosure

SEC source: 0000073088-18-000082 · wf-form4_152087354686176.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,075

F1 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F2 · shares: Shares acquired upon 12/31/17 vesting of performance units granted under the company's 2011 Executive Retirement-Retention Plan.

F3 · price: Share price is the closing share price on 2/12/18, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

Read SEC document
March 02, 2018 Filed Mar 2, 2018 15:31 UTC NORTHWESTERN CORP NWE · Entity 112257 SaleCommon Stock 1,000 $50.95 $50,950.00
Disclosure

SEC source: 0000073088-18-000068 · wf-form4_152002268788999.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,060

F1 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

Read SEC document
February 27, 2018 Filed Feb 28, 2018 12:32 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 567 $52.22 $29,608.74
Disclosure

SEC source: 0000073088-18-000058 · wf-form4_151983910964717.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,060

F1 · shares: Shares acquired upon 12/31/17 vesting of performance units granted under the company's 2015 Long-Term Incentive Program.

F2 · price: Share price is the closing share price on 2/12/18, the date when the company's Board of Directors approved payout and vesting of the award.

F3 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

Read SEC document
February 22, 2018 Filed Feb 26, 2018 16:00 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 366 $52.22 $19,112.52
Disclosure

SEC source: 0000073088-18-000034 · wf-form4_151967878283367.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,493

F1 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F2 · shares: Shares acquired upon 12/31/17 vesting of performance units granted under the company's 2011 Executive Retirement-Retention Plan.

F3 · price: Share price is the closing share price on 2/12/18, the date when the company's Board of Directors approved payout and vesting of the award.

F4 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

Read SEC document
March 07, 2017 Filed Mar 7, 2017 13:31 UTC NORTHWESTERN CORP NWE · Entity 112257 SaleCommon Stock 4,500 $58.27 $262,215.00
Disclosure

SEC source: 0000073088-17-000062 · wf-form4_148891149754188.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,680

F1 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 17:24 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 366 $57.62 $21,088.92
Disclosure

SEC source: 0000073088-17-000048 · wf-form4_148857986106760.xml · nonDerivative · entry 3

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,180

F4 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F5 · shares: Shares acquired upon 12/31/16 vesting of performance units granted under the company's 2011 Executive Retirement-Retention Plan.

F6 · price: Share price is the closing share price on 2/17/17, the date when the company's Board of Directors approved payout and vesting of the award.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 17:24 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 667 $57.40 $38,285.80
Disclosure

SEC source: 0000073088-17-000048 · wf-form4_148857986106760.xml · nonDerivative · entry 2

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,814

F4 · security: Represents shares underlying deferred share units. The shares underlying deferred share units are issuable subsequent to the reporting person's termination of service from the company.

F1 · shares: Shares acquired upon 12/31/16 vesting of performance units granted under the company's 2014 Long-Term Incentive Program.

F2 · price: Share price is the closing share price on 2/16/17, the date when the company's Board of Directors approved payout and vesting of the award.

Read SEC document
March 01, 2017 Filed Mar 3, 2017 17:24 UTC NORTHWESTERN CORP NWE · Entity 112257 GrantCommon Stock 1,109 $57.40 $63,656.60
Disclosure

SEC source: 0000073088-17-000048 · wf-form4_148857986106760.xml · nonDerivative · entry 1

Cashell Michael R · CIK 0001522052 · Vice President - Transmission

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,147

F1 · shares: Shares acquired upon 12/31/16 vesting of performance units granted under the company's 2014 Long-Term Incentive Program.

F2 · price: Share price is the closing share price on 2/16/17, the date when the company's Board of Directors approved payout and vesting of the award.

F3 · balance_after: Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment.

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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.