# EDGAR Filing Document

**Accession Number:** 0000827187
**File Stem:** 0000921895-26-001521
**Filing Date:** 2026-6
**Character Count:** 17778
**Document Hash:** 7dcb5f057ad79b83e9f28124ef30192b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000921895-26-001521.hdr.sgml**: 20260601

**ACCESSION NUMBER**: 0000921895-26-001521

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260601

**DATE AS OF CHANGE**: 20260601

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sleep Number Corp
- **CENTRAL INDEX KEY:** 0000827187
- **STANDARD INDUSTRIAL CLASSIFICATION:** HOUSEHOLD FURNITURE [2510]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 411597886
- **STATE OF INCORPORATION:** MN
- **FISCAL YEAR END:** 0103

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-55269
- **FILM NUMBER:** 261053157

**BUSINESS ADDRESS:**
- **STREET 1:** 1001 THIRD AVENUE SOUTH
- **CITY:** MINNEAPOLIS
- **STATE:** MN
- **ZIP:** 55404
- **BUSINESS PHONE:** 7635517000

**MAIL ADDRESS:**
- **STREET 1:** 1001 THIRD AVENUE SOUTH
- **CITY:** MINNEAPOLIS
- **STATE:** MN
- **ZIP:** 55404

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SELECT COMFORT CORP
- **DATE OF NAME CHANGE:** 19980821
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** STADIUM CAPITAL MANAGEMENT LLC
- **CENTRAL INDEX KEY:** 0001105087

**ORGANIZATION NAME:**
- **EIN:** 770500018
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 199 ELM STREET
- **CITY:** NEW CANAAN
- **STATE:** CT
- **ZIP:** 06840-5321
- **BUSINESS PHONE:** (203) 972-8235

**MAIL ADDRESS:**
- **STREET 1:** 199 ELM STREET
- **CITY:** NEW CANAAN
- **STATE:** CT
- **ZIP:** 06840-5321

## Ex-1

Exhibit 1

**<u>SCHEDULE A</u>**

**<u>Transactions in the Securities of the Issuer During the Past 60 Days</u>**

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;<u>Nature of the Transaction</u> | &nbsp;&nbsp;Amount of Securities<u><br> Purchased / (Sold)</u> | &nbsp;&nbsp;<u>Price ($)</u> | &nbsp;&nbsp;Date of<u><br> Purchase / Sale</u> |

---

**<u>Stadium Special Opportunity I, L.P.</u>**

**** 

Sale of Common Stock<sup>1</sup> (59,944) 1.7791 05/28/2026 <br> Sale of Common Stock<sup>2</sup> (127,611) 1.4117 05/29/2026 <br> Sale of Common Stock<sup>3</sup> (67,607) 1.2330 06/01/2026

**<u>Stadium Capital Partners, L.P.</u>**

Sale of Common Stock<sup>1</sup> (330,732) 1.7791 05/28/2026 <br> Sale of Common Stock<sup>2</sup> (704,074) 1.4117 05/29/2026 <br> Sale of Common Stock<sup>3</sup> (373,013) 1.2330 06/01/2026

______________________

<sup>1</sup> The price reported is a weighted average price. These Shares were sold in multiple transactions at prices ranging from $1.6800 to $1.8750 per Share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares sold at each separate price within the range set forth in this footnote.

<sup>2</sup> The price reported is a weighted average price. These Shares were sold in multiple transactions at prices ranging from $1.1750 to $1.8300 per Share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares sold at each separate price within the range set forth in this footnote.

<sup>3</sup> The price reported is a weighted average price. These Shares were sold in multiple transactions at prices ranging from $1.1650 to $1.3250 per Share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares sold at each separate price within the range set forth in this footnote.

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 9)**

**Sleep Number Corp**

*(Name of Issuer)*

**Common Stock, par value $0.01 per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**STADIUM CAPITAL MANAGEMENT**<br>199 Elm Street<br>1325 Avenue of the Americas<br>New Canaan CT 06840-5321<br>203-972-8235

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**05/28/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**STADIUM CAPITAL MANAGEMENT LLC** | Name of reporting person<br>**STADIUM CAPITAL MANAGEMENT LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**953478.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**953478.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**953478.00** | Aggregate amount beneficially owned by each reporting person<br>**953478.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.1%** | Percent of class represented by amount in Row (11)<br>**4.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IA** | Type of Reporting Person (See Instructions)<br>**IA** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Stadium Capital Management GP, L.P.** | Name of reporting person<br>**Stadium Capital Management GP, L.P.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**953478.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**953478.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**953478.00** | Aggregate amount beneficially owned by each reporting person<br>**953478.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.1%** | Percent of class represented by amount in Row (11)<br>**4.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Stadium Special Opportunity I, L.P.** | Name of reporting person<br>**Stadium Special Opportunity I, L.P.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**146297.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**146297.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**146297.00** | Aggregate amount beneficially owned by each reporting person<br>**146297.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**0.6%** | Percent of class represented by amount in Row (11)<br>**0.6%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**STADIUM CAPITAL PARTNERS L P** | Name of reporting person<br>**STADIUM CAPITAL PARTNERS L P** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**807181.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**807181.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**807181.00** | Aggregate amount beneficially owned by each reporting person<br>**807181.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**3.5%** | Percent of class represented by amount in Row (11)<br>**3.5%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**SEAVER ALEXANDER M** | Name of reporting person<br>**SEAVER ALEXANDER M** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**953478.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**953478.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**953478.00** | Aggregate amount beneficially owned by each reporting person<br>**953478.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.1%** | Percent of class represented by amount in Row (11)<br>**4.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, par value $0.01 per share

**(b) Name of Issuer:**
Sleep Number Corp

**(c) Address of Issuer's Principal Executive Offices:**
1001 THIRD AVENUE SOUTH, MINNEAPOLIS, MN, 55404

**Item 5. Interest in Securities of the Issuer**

**(a)**
Item 5(a) is hereby amended and restated to read as follows:

The responses of the Reporting Persons to rows 11 and 13 on the cover pages of this Amendment No. 9 to the Schedule 13D with respect to the aggregate number of Shares and percentage of the Shares beneficially owned by each of the Reporting Persons are incorporated herein by reference. As of the date hereof, the Reporting Persons collectively beneficially own 953,478 Shares, representing approximately 4.1% of the outstanding Shares. The percentages reported herein relating to beneficial ownership of Shares are based upon 23,049,000 Shares outstanding as of April 4, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 12, 2026.

The filing of this Schedule 13D shall not be deemed an admission that the Reporting Persons are, for purposes of Section 13(d) of the Exchange Act, the beneficial owners of any securities of the Issuer he or it does not directly own. Each of the Reporting Persons specifically disclaims beneficial ownership of the securities reported herein that he or it does not directly own.

**(b)**
—

**(c)**
Item 5(c) is hereby amended and restated to read as follows:

The transactions in the securities of the Issuer during the past 60 days by the Reporting Persons are set forth in Exhibit 1 and are incorporated herein by reference. All of such transactions were effected in the open market unless otherwise noted therein.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** STADIUM CAPITAL MANAGEMENT LLC

**Signature:** /s/ Alexander M. Seaver

**Name/Title:** Alexander M. Seaver, Manager

**Date:** 06/01/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Stadium Capital Management GP, L.P.

**Signature:** /s/ Alexander M. Seaver

**Name/Title:** Alexander M. Seaver, Manager of its General Partner

**Date:** 06/01/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Stadium Special Opportunity I, L.P.

**Signature:** /s/ Alexander M. Seaver

**Name/Title:** Alexander M. Seaver, Manager of the General Partner of its General Partner

**Date:** 06/01/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** STADIUM CAPITAL PARTNERS L P

**Signature:** /s/ Alexander M. Seaver

**Name/Title:** Alexander M. Seaver, Manager of the General Partner of its General Partner

**Date:** 06/01/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** SEAVER ALEXANDER M

**Signature:** /s/ Alexander M. Seaver

**Name/Title:** Alexander M. Seaver

**Date:** 06/01/2026