LCII

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · derivative · entry 12

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 16,458 shares

Expires 2026-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F7 · shares: Represents the forfeiture of PSUs granted to the reporting person on March 1, 2023 that were eligible to vest based on certain financial performance objectives. Upon grant, the target vesting amount was reported in Table II of Form 4. On March 1, 2026, the Company determined that, based on the Company's performance over the applicable performance period, all PSUs under this grant would be forfeited.

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · derivative · entry 11

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,575

Underlying: Common Stock · 8,575 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F6 · shares: These Performance Stock Units ("PSUs") represent the contingent right to receive shares of LCII Common Stock, if and to the extent certain Return on Invested Capital and Free Cash Flow performance goals are achieved by the end of 2028. Earned PSUs, if any, will vest on March 1, 2029.

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · derivative · entry 8

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,717

Underlying: Common Stock · 5,717 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F5 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2026.

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · derivative · entry 7

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,562

Underlying: Common Stock · 2,780 shares

Expires 2028-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F4 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2025

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · derivative · entry 6

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,544

Underlying: Common Stock · 2,544 shares

Expires 2027-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F3 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2024.

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · derivative · entry 5

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,386 shares

Expires 2026-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2023.

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · nonDerivative · entry 4

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,766

SEC source: 0001500862-26-000004 · wk-form4_1772573914.xml · nonDerivative · entry 3

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,130

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: 0001500862-26-000004 · wk-form4_1772573914.xml · nonDerivative · entry 2

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,350

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: 0001500862-26-000004 · wk-form4_1772573914.xml · nonDerivative · entry 1

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,806

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: 0001814112-26-000004 · wk-form4_1772573883.xml · derivative · entry 12

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 23,575 shares

Expires 2026-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F7 · shares: Represents the forfeiture of PSUs granted to the reporting person on March 1, 2023 that were eligible to vest based on certain financial performance objectives. Upon grant, the target vesting amount was reported in Table II of Form 4. On March 1, 2026, the Company determined that, based on the Company's performance over the applicable performance period, all PSUs under this grant would be forfeited.

SEC source: 0001814112-26-000004 · wk-form4_1772573883.xml · derivative · entry 11

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,552

Underlying: Common Stock · 12,552 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F6 · shares: These Performance Stock Units ("PSUs") represent the contingent right to receive shares of LCII Common Stock, if and to the extent certain Return on Invested Capital and Free Cash Flow performance goals are achieved by the end of 2028. Earned PSUs, if any, will vest on March 1, 2029.

SEC source: 0001814112-26-000004 · wk-form4_1772573883.xml · derivative · entry 8

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,368

Underlying: Common Stock · 8,368 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F5 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2026.

SEC source: 0001814112-26-000004 · wk-form4_1772573883.xml · derivative · entry 7

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,141

Underlying: Common Stock · 4,069 shares

Expires 2028-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F4 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2025.

SEC source: 0001814112-26-000004 · wk-form4_1772573883.xml · derivative · entry 6

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,726

Underlying: Common Stock · 3,722 shares

Expires 2027-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F3 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2024.

SEC source: 0001814112-26-000004 · wk-form4_1772573883.xml · derivative · entry 5

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,931 shares

Expires 2026-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2023.

SEC source: 0001814112-26-000004 · wk-form4_1772573883.xml · nonDerivative · entry 4

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,620

SEC source: 0001814112-26-000004 · wk-form4_1772573883.xml · nonDerivative · entry 3

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,814

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: 0001814112-26-000004 · wk-form4_1772573883.xml · nonDerivative · entry 2

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,745

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: 0001814112-26-000004 · wk-form4_1772573883.xml · nonDerivative · entry 1

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,023

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: 0001238361-26-000004 · wk-form4_1772573834.xml · derivative · entry 12

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 48,117 shares

Expires 2026-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F7 · shares: Represents the forfeiture of PSUs granted to the reporting person on March 1, 2023 that were eligible to vest based on certain financial performance objectives. Upon grant, the target vesting amount was reported in Table II of Form 4. On March 1, 2026, the Company determined that, based on the Company's performance over the applicable performance period, all PSUs under this grant would be forfeited.

SEC source: 0001238361-26-000004 · wk-form4_1772573834.xml · derivative · entry 11

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,821

Underlying: Common Stock · 25,821 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F6 · shares: These Performance Stock Units ("PSUs") represent the contingent right to receive shares of LCII Common Stock, if and to the extent certain Return on Invested Capital and Free Cash Flow performance goals are achieved by the end of 2028. Earned PSUs, if any, will vest on March 1, 2029.

SEC source: 0001238361-26-000004 · wk-form4_1772573834.xml · derivative · entry 8

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,214

Underlying: Common Stock · 17,214 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F5 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2026.

SEC source: 0001238361-26-000004 · wk-form4_1772573834.xml · derivative · entry 7

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,747

Underlying: Common Stock · 8,371 shares

Expires 2028-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F4 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2025.

SEC source: 0001238361-26-000004 · wk-form4_1772573834.xml · derivative · entry 6

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,662

Underlying: Common Stock · 7,658 shares

Expires 2027-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F3 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2024.

SEC source: 0001238361-26-000004 · wk-form4_1772573834.xml · derivative · entry 5

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,548 shares

Expires 2026-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2023.

SEC source: 0001238361-26-000004 · wk-form4_1772573834.xml · nonDerivative · entry 4

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 348,163

SEC source: 0001238361-26-000004 · wk-form4_1772573834.xml · nonDerivative · entry 3

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 358,550

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: 0001238361-26-000004 · wk-form4_1772573834.xml · nonDerivative · entry 2

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,179

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: 0001238361-26-000004 · wk-form4_1772573834.xml · nonDerivative · entry 1

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 342,521

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: 0001628280-26-022480 · wk-form4_1774990615.xml · derivative · entry 2

Andrich Petar · CIK 0002126111 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,193

Underlying: Common Stock · 1,182 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · date: The filing was delayed due to a procedural delay in Mr. Andrich receiving the requisite EDGAR access codes from the SEC. This Form 4 was filed promptly upon receipt of the codes.

F5 · shares: These Performance Stock Units ("PSUs") represent the contingent right to receive shares of LCII Common Stock, if and to the extent certain Return on Invested Capital and Free Cash Flow performance goals are achieved by the end of 2028. Earned PSUs, if any, will vest on March 1, 2029.

F6 · balance_after: Includes 11 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) March 27, 2026 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

SEC source: 0001628280-26-022480 · wk-form4_1774990615.xml · derivative · entry 1

Andrich Petar · CIK 0002126111 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,790

Underlying: Common Stock · 1,773 shares

Expires 2029-03-01

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · date: The filing was delayed due to a procedural delay in Mr. Andrich receiving the requisite EDGAR access codes from the SEC. This Form 4 was filed promptly upon receipt of the codes.

F3 · derivative.exercise_date: These restricted stock units vest ratably each year on the first through third anniversaries of the grant date, which was March 1, 2026.

F4 · balance_after: Includes 17 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) March 27, 2026 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

SEC source: 0001238361-26-000002 · wk-form4_1771968922.xml · nonDerivative · entry 3

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 334,973

F3 · price: This transaction was executed in multiple trades at prices ranging from $142.00 to $143.50. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.

SEC source: 0001500862-26-000002 · wk-form4_1771968948.xml · nonDerivative · entry 2

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,420

F2 · price: This transaction was executed in multiple trades at prices ranging from $142.25 to $145.00 The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.

SEC source: 0001238361-26-000002 · wk-form4_1771968922.xml · nonDerivative · entry 2

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 344,973

F2 · price: This transaction was executed in multiple trades at prices ranging from $145.00 to $145.13. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.

SEC source: 0001814112-26-000002 · wk-form4_1771968968.xml · nonDerivative · entry 1

SMITH RYAN RICHARD · CIK 0001814112 · Group President - N.A.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,092

F1 · price: This transaction was executed in multiple trades at prices ranging from $147.24 to $148.50. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.

SEC source: 0001500862-26-000002 · wk-form4_1771968948.xml · nonDerivative · entry 1

Schnur Jamie · CIK 0001500862 · Group President - Aftermarket

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,420

F1 · price: This transaction was executed in multiple trades at prices ranging from $147.11 to $149.18. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.

SEC source: 0001238361-26-000002 · wk-form4_1771968922.xml · nonDerivative · entry 1

LIPPERT JASON · CIK 0001238361 · Director · President , CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 374,973

F1 · price: This transaction was executed in multiple trades at prices ranging from $148.00 to $148.16. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.

SEC source: 0001213182-26-000002 · wk-form4_1767363156.xml · derivative · entry 2

GERO JAMES · CIK 0001213182 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,528

Underlying: Common Stock · 237 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · derivative.exercise_date: These shares represent deferred stock units "DSUs" earned from quarterly director fees, the settlement of these DSUs will vest upon the conclusion of the director's board service with the Company per the election of the director.

F2 · derivative.expiration_date: These shares represent deferred stock units "DSUs" earned from quarterly director fees, the settlement of these DSUs will vest upon the conclusion of the director's board service with the Company per the election of the director.

F3 · balance_after: Includes 106 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) December 12, 2025 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

SEC source: 0001213182-25-000005 · wk-form4_1759441474.xml · derivative · entry 2

GERO JAMES · CIK 0001213182 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,185

Underlying: Common Stock · 309 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · derivative.exercise_date: These shares represent deferred stock units "DSUs" earned from quarterly director fees, the settlement of these DSUs will vest upon the conclusion of the director's board service with the Company per the election of the director.

F2 · derivative.expiration_date: These shares represent deferred stock units "DSUs" earned from quarterly director fees, the settlement of these DSUs will vest upon the conclusion of the director's board service with the Company per the election of the director.

F3 · balance_after: Includes 123 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) September 12, 2025 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

SEC source: 0000763744-25-000117 · wk-form4_1754312892.xml · derivative · entry 9

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 619 shares

Expires 2028-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F6 · shares: Includes 8 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) June 13, 2025 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

F3 · derivative.exercise_date: The vesting of these stock units was accelerated to July 31, 2025 in connection with the reporting person's separation of employment.

SEC source: 0000763744-25-000117 · wk-form4_1754312892.xml · derivative · entry 8

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,342 shares

Expires 2028-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F5 · shares: Includes 57 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) June 13, 2025 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

F3 · derivative.exercise_date: The vesting of these stock units was accelerated to July 31, 2025 in connection with the reporting person's separation of employment.

SEC source: 0000763744-25-000117 · wk-form4_1754312892.xml · derivative · entry 7

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,649 shares

Expires 2027-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F4 · shares: Includes 34 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) June 13, 2025 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

F3 · derivative.exercise_date: The vesting of these stock units was accelerated to July 31, 2025 in connection with the reporting person's separation of employment.

SEC source: 0000763744-25-000117 · wk-form4_1754312892.xml · derivative · entry 6

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,440 shares

Expires 2026-03-01

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: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · shares: Includes 19 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) June 13, 2025 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).

F3 · derivative.exercise_date: The vesting of these stock units was accelerated to July 31, 2025 in connection with the reporting person's separation of employment.

SEC source: 0000763744-25-000117 · wk-form4_1754312892.xml · nonDerivative · entry 5

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,286

SEC source: 0000763744-25-000117 · wk-form4_1754312892.xml · nonDerivative · entry 4

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,279

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: 0000763744-25-000117 · wk-form4_1754312892.xml · nonDerivative · entry 3

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,660

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: 0000763744-25-000117 · wk-form4_1754312892.xml · nonDerivative · entry 2

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,318

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: 0000763744-25-000117 · wk-form4_1754312892.xml · nonDerivative · entry 1

NAMENYE ANDREW J · CIK 0001723219 · EVP, CLO, CHRO, & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,669

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: 0000763744-25-000113 · wk-form4_1751390360.xml · derivative · entry 2

GERO JAMES · CIK 0001213182 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,753

Underlying: Common Stock · 316 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Stock Unit represents a contingent right to receive one share of LCII Common Stock.

F2 · derivative.exercise_date: These shares represent deferred stock units "DSUs" earned from quarterly director fees, the settlement of these DSUs will vest upon the conclusion of the director's board service with the Company per the election of the director.

F2 · derivative.expiration_date: These shares represent deferred stock units "DSUs" earned from quarterly director fees, the settlement of these DSUs will vest upon the conclusion of the director's board service with the Company per the election of the director.

F3 · balance_after: Includes 135 stock unit(s) received as a result of regular cash dividends paid on reported payment date(s) June 13, 2025 to holders of registrant's common stock on the related reported record date(s). In accordance with the registrant's 2018 Omnibus Incentive Plan for underlying units granted under that plan, holders of stock units on the reported dividend record date(s) received additional dividend equivalent stock unit(s) subject to the same terms and conditions as the underlying stock units held on the reported record date(s).