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Insider Trading Arrangements
 6 Months Ended
Jun. 30, 2023
shares
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement

Rule 10b5-1 Trading Arrangements

During second quarter 2023, two of the company’s executive officers adopted trading plans intended to satisfy the affirmative defense conditions of Rule 10b5–1(c). David M. Wold, senior vice president and chief financial officer, adopted a plan on June 5, 2023 to initiate the cashless exercise of 8,095 stock options in the aggregate, 3,693 of which expire on February 12, 2024 and 4,402 of which expire on February 12, 2025, and thereby sell on the open market 8,095 shares of common stock underlying the stock options at a designated strike price. Mr. Wold’s plan begins on September 5, 2023 and expires when all of the options are exercised and all of the underlying shares are sold or on February 12, 2024, whichever occurs first. Denise M. Merle,

senior vice president and chief administration officer, adopted a plan on June 14, 2023 to sell an aggregate of 22,500 shares of common stock. Ms. Merle’s plan begins on September 13, 2023 and expires when all of the shares are sold or on September 11, 2024, whichever occurs first.
David M. Wold [Member]  
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted true
Denise M. Merle [Member]  
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted true
Rule 10b5-1 Trading Plan [Member] | David M. Wold [Member]  
Trading Arrangements, by Individual  
Name David M. Wold
Title senior vice president and chief financial officer
Adoption Date June 5, 2023
Aggregate Available 8,095
Rule 10b5-1 Trading Plan [Member] | Denise M. Merle [Member]  
Trading Arrangements, by Individual  
Name Denise M. Merle
Title senior vice president and chief administration officer
Adoption Date June 14, 2023
Aggregate Available 22,500
Rule 10b5-1 Trading Plan Expiring on February 12, 2024 [Member] | David M. Wold [Member]  
Trading Arrangements, by Individual  
Aggregate Available 3,693
Rule 10b5-1 Trading Plan Expiring on February 12, 2025 [Member] | David M. Wold [Member]  
Trading Arrangements, by Individual  
Aggregate Available 4,402