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Insider Trading Arrangements

3 Months Ended

6 Months Ended

Jun. 30, 2023

During the period from April 1, 2023, to June 30, 2023, our executive officers and directors adopted or terminated contracts, instructions or written plans for the purchase or sale of our securities as noted below:

Name and Title

Action

Date

Trading Arrangement

Total Shares Authorized
to be Sold

Expiration
Date

Rule 10b5-1*

Non-Rule 10b5-1**

David W. Boyer

Adopt

5/31/2023

11,590

2/15/2024

(Chief Corporate Affairs Officer)

William H. Rastetter

Adopt

5/31/2023

10,900

2/15/2024

(Chair of the Board of Directors)

plus the Additional Sell
to Cover Shares
(as defined in footnote 1)

______________

* Intended to satisfy the affirmative defense of Rule 10b5-1(c)

** Not intended to satisfy the affirmative defense of Rule 10b5-1(c)

(1) Dr. Rastetter’s plan provides for the exercise of a vested stock option to purchase 20,000 shares (the “Vested Option”) and the associated sale of 10,900 shares plus an additional number of shares as reasonably estimated by a brokerage firm such that the net proceeds from all shares sold are sufficient to cover the exercise cost and taxes associated with the exercise of the Vested Option (the “Additional Sell to Cover Shares”).

David W. Boyer [Member]

Trading Arrangements, by Individual

Name

David W. Boyer

Title

(Chief Corporate Affairs Officer)

Rule 10b5-1 Arrangement Adopted

true

Non-Rule 10b5-1 Arrangement Adopted

false

Adoption Date

5/31/2023