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Milburn Ryan A.

Disclosed activity across 1 company

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71981
SEC CIK
0001543604

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Allison Transmission Holdings IncALSN · Entity 246VP, Engr. & Tech Dev.December 05, 2025December 09, 2025

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.

Allison Transmission Holdings Inc

Report date December 05, 2025 · Filed December 09, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Dividend Equivalent RightsSEC Table II · derivative / convertible securityDirect79 Reported balance After 2025-12-05 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2025-12-05 · Grant · Acquired 9 · Balance 79

F1: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

Filing footnotes · ownership attribution and instrument terms

F1: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

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
May 27, 2022 Filed Jun 1, 2022 19:48 UTC Allison Transmission Holdings Inc ALSN · Entity 246 GrantDividend Equivalent Rights · Derivative 33 $0.00 $0.00
Disclosure

SEC source: 0001062993-22-013964 · form4.xml · derivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162

Underlying: Common Stock · 33 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

Read SEC document
March 18, 2022 Filed Mar 22, 2022 20:23 UTC Allison Transmission Holdings Inc ALSN · Entity 246 GrantDividend Equivalent Rights · Derivative 32 $0.00 $0.00
Disclosure

SEC source: 0001062993-22-008301 · form4.xml · derivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129

Underlying: Common Stock · 32 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

Read SEC document
February 23, 2022 Filed Feb 25, 2022 21:08 UTC Allison Transmission Holdings Inc ALSN · Entity 246 GrantRestricted Stock Units · Derivative 3,177 $0.00 $0.00
Disclosure

SEC source: 0001062993-22-005738 · form4.xml · derivative · entry 2

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,177

Underlying: Common Stock · 3,177 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Allison Transmission Holdings, Inc. common stock.

F3 · derivative.exercise_date: The RSUs vests in three equal annual installments beginning on February 23, 2023.

F3 · derivative.expiration_date: The RSUs vests in three equal annual installments beginning on February 23, 2023.

Read SEC document
February 23, 2022 Filed Feb 25, 2022 21:08 UTC Allison Transmission Holdings Inc ALSN · Entity 246 GrantEmployee Stock Option (right to buy) · Derivative 9,531 $0.00 Strike: $39.42 $0.00
Disclosure

SEC source: 0001062993-22-005738 · form4.xml · derivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,531

Underlying: Common Stock · 9,531 shares

Expires 2032-02-23

F1 · derivative.exercise_date: The option vests in three equal annual installments beginning on February 23, 2023.

Read SEC document
February 20, 2022 Filed Feb 22, 2022 20:36 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionDividend Equivalent Rights · Derivative 54 $0.00 $0.00
Disclosure

SEC source: 0001062993-22-005095 · form4.xml · derivative · entry 5

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97

Underlying: Common Stock · 54 shares

Expires not disclosed

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

F2 · derivative.exercise_price: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

F2 · derivative.exercise_date: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

F2 · derivative.expiration_date: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

Read SEC document
February 20, 2022 Filed Feb 22, 2022 20:36 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionRestricted Stock Units · Derivative 1,126 $0.00 $0.00
Disclosure

SEC source: 0001062993-22-005095 · form4.xml · derivative · entry 4

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,126 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: Settlement of restricted stock units ("RSUs") granted on February 20, 2019. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F1 · derivative.exercise_date: Settlement of restricted stock units ("RSUs") granted on February 20, 2019. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F1 · derivative.expiration_date: Settlement of restricted stock units ("RSUs") granted on February 20, 2019. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

Read SEC document
February 20, 2022 Filed Feb 22, 2022 20:36 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Tax withholdingCommon Stock 402 $40.57 $16,309.14
Disclosure

SEC source: 0001062993-22-005095 · form4.xml · nonDerivative · entry 3

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,317

F3 · shares: Represents shares withheld by ALSN to satisfy tax withholding obligations on the vesting of DERs and RSUs.

Read SEC document
February 20, 2022 Filed Feb 22, 2022 20:36 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionCommon Stock 54 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-22-005095 · form4.xml · nonDerivative · entry 2

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,719

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 · price: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

Read SEC document
February 20, 2022 Filed Feb 22, 2022 20:36 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionCommon Stock 1,126 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-22-005095 · form4.xml · nonDerivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,665

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: Settlement of restricted stock units ("RSUs") granted on February 20, 2019. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

Read SEC document
February 10, 2022 Filed Feb 14, 2022 17:33 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionDividend Equivalent Rights · Derivative 14 $0.00 $0.00
Disclosure

SEC source: 0001062993-22-004109 · form4.xml · derivative · entry 5

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151

Underlying: Common Stock · 14 shares

Expires not disclosed

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

F2 · derivative.exercise_price: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

F2 · derivative.exercise_date: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

F2 · derivative.expiration_date: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

Read SEC document
February 10, 2022 Filed Feb 14, 2022 17:33 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionRestricted Stock Units · Derivative 743 $0.00 $0.00
Disclosure

SEC source: 0001062993-22-004109 · form4.xml · derivative · entry 4

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,487

Underlying: Common Stock · 743 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: Settlement of restricted stock units ("RSUs") granted on February 10, 2021. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F1 · derivative.exercise_date: Settlement of restricted stock units ("RSUs") granted on February 10, 2021. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F1 · derivative.expiration_date: Settlement of restricted stock units ("RSUs") granted on February 10, 2021. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

Read SEC document
February 10, 2022 Filed Feb 14, 2022 17:33 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Tax withholdingCommon Stock 258 $39.17 $10,105.86
Disclosure

SEC source: 0001062993-22-004109 · form4.xml · nonDerivative · entry 3

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,539

F3 · shares: Represents shares withheld by ALSN to satisfy tax withholding obligations on the vesting of DERs and RSUs.

Read SEC document
February 10, 2022 Filed Feb 14, 2022 17:33 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionCommon Stock 14 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-22-004109 · form4.xml · nonDerivative · entry 2

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,797

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 · price: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

Read SEC document
February 10, 2022 Filed Feb 14, 2022 17:33 UTC Allison Transmission Holdings Inc ALSN · Entity 246 Exercise / conversionCommon Stock 743 Not disclosed Not disclosed
Disclosure

SEC source: 0001062993-22-004109 · form4.xml · nonDerivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,783

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: Settlement of restricted stock units ("RSUs") granted on February 10, 2021. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

Read SEC document
November 30, 2021 Filed Dec 2, 2021 19:32 UTC Allison Transmission Holdings Inc ALSN · Entity 246 GrantDividend Equivalent Rights · Derivative 28 $0.00 $0.00
Disclosure

SEC source: 0001062993-21-011985 · form4.xml · derivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 165

Underlying: Common Stock · 28 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 18:33 UTC Allison Transmission Holdings Inc ALSN · Entity 246 GrantDividend Equivalent Rights · Derivative 25 $0.00 $0.00
Disclosure

SEC source: 0001411207-21-000173 · edgar.xml · derivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Product Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 137

Underlying: Common Stock · 25 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.