Coliseum entities add 228,920 Sonos (SONO) shares in open-market buys

Rhea-AI Filing Summary

Coliseum Capital–managed entities reported open-market purchases of Sonos Inc. common stock. Over three days, they bought a total of 228,920 shares at prices ranging from $13.15 to $13.69 per share, including 90,000 shares on March 13, 2026, 13,920 shares on March 16, 2026 and 125,000 shares on March 17, 2026.

After these transactions, the entities collectively held 18,070,762 Sonos shares indirectly. Footnotes state that Coliseum Capital Partners, L.P., Coliseum Co-Invest IV, L.P. and a separate account advisory client directly hold the shares, and various Coliseum-affiliated parties disclaim beneficial ownership beyond their pecuniary interests.

Insights

Equity ownership analyst

Coliseum-related funds modestly increased their indirect Sonos stake through open-market buying.

The filing shows investment entities advised by Coliseum Capital Management executing three open-market purchases totaling 228,920 Sonos shares between March 13–17, 2026, at prices around $13–$14. These are straightforward cash purchases of common stock with no derivatives or complex structures.

Post-trade, the entities collectively hold 18,070,762 shares, with footnotes detailing that Coliseum Capital Partners, L.P., Coliseum Co-Invest IV, L.P. and a separate account are the direct holders. Individual managers and related entities expressly disclaim beneficial ownership beyond their economic interests, emphasizing this is an institutional position rather than personal insider trading.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Coliseum Capital Management, LLC

(Last) (First) (Middle)

105 ROWAYTON AVE.

(Street)

ROWAYTON CT 06853

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Sonos Inc [ SONO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $0.001 par value per share ("Common Stock")	03/13/2026		P		90,000	A	$13.2(1)	17,931,842	I	See Footnotes(2)(3)
Common Stock	03/16/2026		P		13,920	A	$13.25	17,945,762	I	See Footnotes(2)(3)
Common Stock	03/17/2026		P		125,000	A	$13.57(4)	18,070,762	I	See Footnotes(2)(3)(5)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

Coliseum Capital Management, LLC

(Last) (First) (Middle)

105 ROWAYTON AVE.

(Street)

ROWAYTON CT 06853

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Shackelton Christopher S

(Last) (First) (Middle)

105 ROWAYTON AVE.

(Street)

ROWAYTON CT 06853

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Coliseum Capital, LLC

(Last) (First) (Middle)

105 ROWAYTON AVE.

(Street)

ROWAYTON CT 06853

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

COLISEUM CAPITAL PARTNERS, L.P.

(Last) (First) (Middle)

105 ROWAYTON AVE.

(Street)

ROWAYTON CT 06853

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Gray Adam

(Last) (First) (Middle)

105 ROWAYTON AVE.

(Street)

ROWAYTON CT 06853

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Coliseum Capital Co-Invest IV, L.P.

(Last) (First) (Middle)

105 ROWAYTON AVE.

(Street)

ROWAYTON CT 06853

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.15 to $13.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

2. The shares of Common Stock reported herein are held directly by (a) Coliseum Capital Partners, L.P. ("CCP") and Coliseum Co-Invest IV, L.P. ("CCC IV"), each of which are an investment limited partnership of which Coliseum Capital, LLC, a Delaware limited liability company ("CC"), is general partner and for which Coliseum Capital Management, LLC, a Delaware limited liability company ("CCM"), serves as investment adviser; and (b) a separate account investment advisory client of CCM (the "Separate Account").

3. Christopher S. Shackelton ("Shackelton") and Adam Gray ("Gray") are managers of and have an ownership interest in each of CCM and CC. Each of Shackelton, Gray, CCP, the Separate Account, CC and CCM disclaims beneficial ownership of these securities except to the extent of that person's pecuniary interest therein.

4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.44 to $13.69, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the SEC, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

5. Following the transactions reported herein, CCP directly owned 12,923,136 shares of Common Stock, CCC IV directly owned 2,120,482 shares of Common Stock and the Separate Account directly owned 3,027,144 shares of Common Stock.

	Coliseum Capital Management, LLC, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/17/2026
	Christopher Shackelton, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/17/2026
	Coliseum Capital, LLC, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/17/2026
	Coliseum Capital Partners, L.P., By: Coliseum Capital, LLC, its General Partner, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/17/2026
	Adam Gray, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/17/2026
	Coliseum Capital Co-Invest IV, L.P., By: Coliseum Capital, LLC, its General Partner, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

How many Sonos (SONO) shares did Coliseum-related entities buy in this Form 4?

The filing reports that entities advised by Coliseum Capital Management bought a total of 228,920 Sonos common shares. These open-market purchases occurred over three days and increased their indirect holdings to 18,070,762 shares after the reported transactions.

On what dates did the Sonos (SONO) open-market purchases occur?

The open-market purchases took place on March 13, 2026, March 16, 2026, and March 17, 2026. Each date reflects a separate transaction, with the largest single-day purchase being 125,000 shares on March 17, 2026, according to the Form 4 details.

What prices did Coliseum-related entities pay for Sonos (SONO) shares?

The reported prices are weighted averages, with shares bought between $13.15 and $13.25 on one day and between $13.44 and $13.69 on another. Individual trades within these ranges contributed to weighted average prices shown in the Form 4 transaction table.

Who directly holds the Sonos (SONO) shares referenced in this Form 4?

The shares are held directly by Coliseum Capital Partners, L.P., Coliseum Co-Invest IV, L.P., and a separate account investment advisory client of Coliseum Capital Management. The filing clarifies that these entities, not individual managers, are the direct registered owners of the common stock.

How many Sonos (SONO) shares did each Coliseum entity hold after the transactions?

After the reported transactions, Coliseum Capital Partners, L.P. held 12,923,136 shares, Coliseum Co-Invest IV, L.P. held 2,120,482 shares, and the separate account client held 3,027,144 shares. Together, these positions total 18,070,762 shares of Sonos common stock.

Do individual managers personally own the Sonos (SONO) shares in this Form 4?

The filing states that Christopher S. Shackelton, Adam Gray and related entities disclaim beneficial ownership of the securities, except to the extent of their pecuniary interests. This means the reported Sonos shares are institutionally held, not personally owned in their individual names.