Anton Nikodemus was named Chief Operating Officer of Sonida Senior Living, Inc., effective June 15, 2026. As of November 6, 2026, Sonida Senior Living, Inc. has reported 2 leadership change filings to the SEC under Item 5.02 of Form 8-K, from April 22, 2026 to June 1, 2026, naming 2 appointments and 1 departure (Form 8-K, June 1, 2026).
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Sonida Senior Living, Inc. reported changes in 2 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-04-22 to 2026-06-01. They name 3 people, with 2 appointments and 1 departure. Every row below is cited to the filing it comes from, and this page adds each new change as Sonida Senior Living, Inc. files it.
Also on the record for Sonida Senior Living, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| September 10, 2026 | Stake report, Schedule 13G/A, by Pertento Partners LLP | 6% of the class | 5%+ stakes | Source |
| August 25, 2026 | Stake report, Schedule 13D/A, by Conversant Capital LLC | 29.5% of the class | 5%+ stakes | Source |
| August 12, 2026 | Stake report, Schedule 13G, by Capital International Investors | 7% of the class | 5%+ stakes | Source |
| August 10, 2026 | Stake report, Schedule 13D/A, by Conversant Capital LLC | 32.3% of the class | 5%+ stakes | Source |
| June 11, 2026 | Stake report, Schedule 13G, by Pertento Partners LLP | 5% of the class | 5%+ stakes | Source |
| June 4, 2026 | Stake report, Schedule 13G/A, by Ugo Bizzarri | 4.84% of the class | 5%+ stakes | Source |
| March 13, 2026 | Stake report, Schedule 13D/A, by Conversant Capital LLC | 32.3% of the class | 5%+ stakes | Source |
| March 11, 2026 | Stake report, Schedule 13D/A, by Sam Levinson | 6.7% of the class | 5%+ stakes | Source |
| November 6, 2025 | Stake report, Schedule 13D/A, by Sam Levinson | 14.3% of the class | 5%+ stakes | Source |
| November 5, 2025 | Stake report, Schedule 13D/A, by Conversant Capital LLC | 54.1% of the class | 5%+ stakes | Source |
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More on Sonida Senior Living, Inc. and the records around it.
Sonida Senior Living, Inc. elsewhere on the record
- 5%+ stake filings Sep 2026
- Who owns it
Companies that share a holder
- Seymour Pluchenik also filed stake reports on 1 other company: Clipper Realty Inc. (Oct 2026)
- Conversant Dallas Parkway (A) LP also filed stake reports on 3 other companies: Cardinal Infrastructure Group Inc. (Oct 2026), Vulcan Infrastructure and Power Inc. (Sep 2026), New ERA Energy & Digital, Inc. (Jul 2026)
- Pertento Partners LLP also filed stake reports on 6 other companies: Grocery Outlet Holding Corp. (Oct 2026), Cellebrite DI Ltd. (Oct 2026), Patria Investments Limited (May 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-06-01 | In | Chief Operating Officer | 2026-06-15 | 8-K, 2026-06-01 | |
| 2026-04-22 | Out | Director | 2026-04-27 | 8-K, 2026-04-22 | |
| 2026-04-22 | In | Director | 2026-04-27 | 8-K, 2026-04-22 |
Who leads Sonida Senior Living, Inc., as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Operating Officer: Anton Nikodemus, appointed, effective 2026-06-15 (filed 2026-06-01).
- Director: Z. Lieberman, departure reported, effective 2026-04-27 (filed 2026-04-22). No successor is named in these filings.
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Find candidates like Chief Operating Officer at Sonida Senior Living, Inc.Every change, in the filing's words
Appointed: Anton Nikodemus, Chief Operating Officer, effective 2026-06-15
On June 1, 2026, the Board of Directors (the "Board") of Sonida Senior Living, Inc. (the "Company") appointed Anton Nikodemus as Executive Vice President and Chief Operating Officer of the Company, effective June 15, 2026.
- Prior to joining the Company, Mr. Nikodemus, age 62, served as the President and Chief Executive Officer for Seaport Entertainment Group, as well as the Chairman of its board of directors, since 2023.
- Mr. Nikodemus has spent over 30 years in entertainment and hospitality leading the development and operations of industry premier destination brands.
- Prior to joining Seaport Entertainment Group, he served as President and Chief Operating Officer of CityCenter for MGM Resorts International from December 2020 to November 2023, where he oversaw operations for The Cosmopolitan of Las Vegas, Vdara Hotel & Spa and ARIA Resort & Casino.
- He also served as Portfolio President of Las Vegas Properties; President and Chief Operating Officer, Bellagio and Park MGM from April 2020 to December 2020 and President and Chief Operating Officer Luxury Portfolio at MGM Resorts International from February 2019 to March 2020.
- Mr. Nikodemus notably led the creation and development of the MGM National Harbor Hotel & Casino in Maryland and the MGM Springfield in Massachusetts.
- Mr. Nikodemus earned a B.S. in Business Management and Marketing from Arizona State University, and he completed the Advanced Finance Program at the Wharton School of the University of Pennsylvania.
Departing: Z. Lieberman, Director, effective 2026-04-27
(b) Resignation of Mr. Lieberman as a Director; Appointment of Mr. Levinson as a Director On April 16, 2026, Shmuel S.Z. Lieberman, an independent director of the Board of Directors (the "Board") of Sonida Senior Living, Inc. (the "Company"), notified the Board of his resignation from his position as an independent director of the Board effective April 27, 2026.
Appointed: Sam Levinson, Director, effective 2026-04-27
Upon receipt of Mr. Lieberman's notice, on April 16, 2026, the Board appointed Sam Levinson to the Board as a Class II director of the Company, effective April 27, 2026, for a term scheduled to expire, along with the Company's other Class II directors, at the Company's 2026 annual meeting of stockholders.
- There is no disagreement between Mr. Lieberman and the Company on any matter relating to the Company's operations, policies or practices.
- Mr. Levinson's appointment was made to fill the vacancy in the Class II directors of the Board resulting from Mr. Lieberman's resignation.
- Additionally, Mr. Levinson was appointed to the Board's Compensation Committee.
- Mr. Levinson will serve as a director designee of Silk Partners LP ("Silk"), a stockholder of the Company, pursuant to the terms of the Amended and Restated Investor Rights Agreement (the "Investor Rights Agreement"), dated as of March 10, 2026, by and among the Company, certain affiliates of Conversant Capital LLC (the "Conversant Parties") and Silk.
- The Board has determined that Mr. Levinson qualifies as an independent director under the listing standards of the New York Stock Exchange.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.