Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Sam Levinson - 10 Mar 2026 SCHEDULE 13D/A Report for SONIDA SENIOR LIVING, INC. Common Stock (CSU)
- Filing manager
- Sam Levinson
- Reporting owner
- Seymour Pluchenik
- Beneficially owned shares
- 3,073,565 shares
- Large-stake signal
-
Ownership
6.7%Beneficial ownership of this reported class.
Shares
3,073,565 sharesShares beneficially owned as disclosed.
Event date
10 Mar 2026Date tied to the ownership event or amendment.
Accepted by SEC
11 Mar 2026EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 6.7%
- Symbol
- CSU
- Shares outstanding
- 45,874,104 shares
- SEC form
- SCHEDULE 13D/A
- Accepted by SEC
- 11 Mar 2026, 12:14:29 UTC
- Event date
- 10 Mar 2026
- Prior SEC filing
- 06 Nov 2025
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
5 source fields
Key filing fact
Sam Levinson disclosed 6.7% ownership in SONIDA SENIOR LIVING, INC. Common Stock (CSU) on 10 Mar 2026.
Key facts
- Sam Levinson filed SCHEDULE 13D/A for SONIDA SENIOR LIVING, INC. Common Stock (CSU).
- Disclosed ownership: 6.7%.
- Date of event: 10 Mar 2026.
Change
- Previous schedule filing date: 06 Nov 2025.
- Current filing was accepted on 11 Mar 2026, 12:14.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (7)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Seymour Pluchenik | 6.7% | 3,073,565 | 0 | 3,073,565 | /s/ Seymour Pluchenik | Seymour Pluchenik | |
| Sam Levinson | 6.2% | 2,830,813 | 0 | 2,830,813 | /s/ Sam Levinson | Sam Levinson | 0001588901 |
| Simon Glick | 6.2% | 2,830,813 | 0 | 2,830,813 | /s/ Simon Glick | Simon Glick | |
| Silk Partners, LP | 6.2% | 2,830,813 | 2,830,813 | 0 | /s/ Seymour Pluchenik | Siget NY Partners, LP, a New York limited partnership and general partner of Silk Partners, LP, by Seymour Pluchenik, Managing Member | |
| Siget NY Partners, L.P. | 6.2% | 2,830,813 | 0 | 2,830,813 | /s/ Seymour Pluchenik | 1271 ASSOCIATES, LLC, a Delaware limited liability company and general partner of Siget NY Partners, L.P. by Seymour Pluchenik, Managing Member | |
| 1271 Associates, LLC | 6.2% | 2,830,813 | 0 | 2,830,813 | /s/ Seymour Pluchenik | Seymour Pluchenik/ Managing Member | |
| PF Investors, LLC | 0.5% | 242,752 | 242,752 | 0 | /s/ Seymour Pluchenik | Seymour Pluchenik/ Manager |
CIK / CUSIP context first