| 10.21 | | | | | | Executive Employment Agreement, effective as of March 1, 2017, by and between the Company and Michele G. Buck is incorporated by reference from Exhibit 10.1 to the Company’s Current Report on Form 8-K/A filed February 24, 2017.+ | | |
| 10.22 | | | | | | The Company’s Directors’ Compensation Plan, Amended and Restated as of December 2, 2008, is incorporated by reference from Exhibit 10.8 to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2008.+ | | |
| 21.1 | | | | | | Subsidiaries of the Registrant.* | | |
| 23.1 | | | | | | Consent of Ernst & Young LLP.* | | |
| 31.1 | | | | | | Certification of Michele G. Buck, Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.* | | |
| 31.2 | | | | | | Certification of Steven E. Voskuil, Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.* | | |
| 32.1 | | | | | | Certification of Michele G. Buck, Chief Executive Officer, and Steven E. Voskuil, Chief Financial Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.** | | |
| 101.INS | | | | | | XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. | | |
| 101.SCH | | | | | | XBRL Taxonomy Extension Schema | | |
| 101.CAL | | | | | | XBRL Taxonomy Extension Calculation Linkbase | | |
| 101.LAB | | | | | | XBRL Taxonomy Extension Label Linkbase | | |
| 101.PRE | | | | | | XBRL Taxonomy Extension Presentation Linkbase | | |
| 101.DEF | | | | | | XBRL Taxonomy Extension Definition Linkbase | | |
| 104 | | | | | | The cover page from the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2022, formatted in Inline XBRL and contained in Exhibit 101. | | |
| | | | | | | | |
| * | | | | | | Filed herewith | | |
| ** | | | | | | Furnished herewith | | |
| + | | | | | | Management contract, compensatory plan or arrangement | | |
| † | | | | | | Portions of this exhibit have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K | | |
| # | | | | | | Pursuant to Instruction 1 to Regulation S-T Rule 105(d), no hyperlink is required for any exhibit incorporated by reference that has not been filed with the SEC in electronic format | | |