Coliseum Capital funds boost Sonos (SONO) stake with 920K-share buy

Rhea-AI Filing Summary

Sonos Inc saw significant insider accumulation as investment entities advised by Coliseum Capital Management reported open-market purchases of a combined 920,000 shares of Common Stock over three days. The shares were bought on March 9, 10 and 11, 2026 at prices around $13.95, $14.19 and $14.22 per share, with actual trade prices in weighted-average ranges between $13.40 and $14.25. Following these transactions, Coliseum Capital Partners, L.P., Coliseum Capital Co-Invest IV, L.P. and a separate account client together held 17,841,842 Sonos shares, with each entity’s direct ownership detailed in the filing, while associated individuals and entities disclaim beneficial ownership beyond their pecuniary interests.

Insights

Equity ownership analyst

Coliseum-advised funds increased their Sonos stake by 920,000 shares via open-market buying.

Investment entities advised by Coliseum Capital Management purchased 920,000 Sonos common shares across three open-market transactions on March 9–11, 2026. Reported prices were around $13.95, $14.19 and $14.22 per share, with weighted-average ranges between $13.40 and $14.25.

After these trades, Coliseum Capital Partners, Coliseum Capital Co-Invest IV and a separate account client directly held a combined 17,841,842 shares as disclosed. Individuals Christopher Shackelton and Adam Gray, and related entities, expressly disclaim beneficial ownership beyond their pecuniary interests, underscoring that the activity is at the fund level rather than personal trading.

The pattern shows net buying with no sales or derivative exercises, and no remaining derivative positions are listed. Subsequent company filings may provide additional context on how this ownership position evolves over time relative to Sonos’ broader shareholder base.

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

OMB Number:			3235-0287
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hours per response:			0.5

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)
03/09/2026

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")	03/09/2026		P		420,000	A	$13.95(1)	17,341,842	I	See Footnotes(2)(3)(6)
Common Stock	03/10/2026		P		320,000	A	$14.19(4)	17,661,842	I	See Footnotes(2)(3)(6)
Common Stock	03/11/2026		P		180,000	A	$14.22(5)	17,841,842	I	See Footnotes(2)(3)(6)

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 $13.40 to $14.25, 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 $13.82 to $14.25, 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. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.10 to $14.25, 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.

6. Following the transactions reported herein, CCP directly owned 12,923,136 shares of Common Stock, CCC IV directly owned 1,891,562 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	03/11/2026
	Christopher Shackelton, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/11/2026
	Coliseum Capital, LLC, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/11/2026
	Coliseum Capital Partners, L.P., By: Coliseum Capital, LLC, its General Partner, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/11/2026
	Adam Gray, By: /s/ Adam Cina, Attorney-in-fact, Adam Cina, Attorney-in-fact	03/11/2026
	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	03/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider buying did Coliseum Capital report in Sonos (SONO)?

Investment entities advised by Coliseum Capital Management reported buying 920,000 Sonos shares in open-market transactions. The purchases occurred on March 9, 10 and 11, 2026, and involved Sonos common stock at prices between $13.40 and $14.25 per share.

At what prices were the recent Sonos (SONO) insider shares purchased?

The filing lists three weighted-average purchase prices: $13.95, $14.19 and $14.22 per Sonos share. Footnotes explain that individual trades occurred within ranges spanning $13.40 to $14.25, with full price breakdowns available upon request from the reporting persons.

How many Sonos (SONO) shares do Coliseum-related entities hold after these transactions?

After the reported trades, Coliseum-advised entities held a combined 17,841,842 Sonos common shares. The filing specifies that Coliseum Capital Partners owned 12,923,136 shares, Coliseum Capital Co-Invest IV owned 1,891,562 shares and a separate account client held 3,027,144 shares directly.

Who actually owns the Sonos (SONO) shares reported in this Form 4?

The Sonos shares are held directly by Coliseum Capital Partners, Coliseum Capital Co-Invest IV and a separate account client of Coliseum Capital Management. Individuals Christopher Shackelton and Adam Gray, along with related entities, disclaim beneficial ownership except for their pecuniary interests in these investment vehicles.

Were the Sonos (SONO) insider trades open-market purchases or another type?

All reported Sonos transactions are coded "P" as open-market purchases of common stock. The filing describes them as purchases in the open market or private transactions, with no accompanying sales, option exercises, gifts or restructuring entries disclosed for the same dates.