Liberty Broadband: CSS LLC reports 0% Series B stake

The ownership table records no sole or shared voting or dispositive power over Liberty Broadband's Series B common stock.

Available on EDGAR 11/02/2026 - 04:17 PM EST Accepted by SEC EDGAR 11/02/2026 - 04:17 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Liberty Broadband Corp. (LBRDA) is the issuer whose Series B common stock is covered by CSS LLC’s amended ownership report. CSS LLC stated that, following completion of the Merger, it beneficially owned zero shares as of August 19, 2026, representing 0% of the class. Mitchell R. Bialek, CCO, signed the report.

Key Figures

Beneficially owned: 0 shares Percent of class: 0% Sole and shared voting and dispositive power: 0 shares for each

3 metrics

Beneficially owned 0 shares As of August 19, 2026

Percent of class 0% CSS LLC’s reported ownership

Sole and shared voting and dispositive power 0 shares for each CSS LLC’s reported ownership

Key Terms

beneficially owned, Sole Voting Power, Shared Dispositive Power

3 terms

beneficially owned financial

"beneficially owns zero shares of Series B common stock"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power regulatory

"Sole Voting Power 0.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Shared Dispositive Power regulatory

"Shared Dispositive Power 0.00"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Liberty Broadband LBRDA Series B shares did CSS LLC report owning?

CSS LLC reported beneficial ownership of zero shares of Liberty Broadband’s Series B common stock as of August 19, 2026, following completion of the Merger; that represented 0% of the class.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Liberty Broadband Corporation

(Name of Issuer)

Series B Common Stock

(Title of Class of Securities)

530307206

(CUSIP Number)

08/19/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 530307206

1

Names of Reporting Persons

CSS LLC/IL

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

ILLINOIS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Liberty Broadband Corporation
(b)	Address of issuer's principal executive offices: 12300 Liberty Boulevard, Englewood, COLORADO 80112
Item 2.
(a)	Name of person filing: CSS LLC/IL
(b)	Address or principal business office or, if none, residence: 1 NORTH WACKER DRIVE SUITE 3075 CHICAGO, Illinois 60606
(c)	Citizenship: CSS LLC/IL - ILLINOIS
(d)	Title of class of securities: Series B Common Stock
(e)	CUSIP No.: 530307206
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 0
(b)	Percent of class: 0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: CSS LLC/IL - 0
	(ii) Shared power to vote or to direct the vote: CSS LLC/IL - 0
	(iii) Sole power to dispose or to direct the disposition of: CSS LLC/IL - 0
	(iv) Shared power to dispose or to direct the disposition of: CSS LLC/IL - 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

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.

CSS LLC/IL

Signature:	Mitchell R Bialek
Name/Title:	Mitchell R Bialek/CCO
Date:	11/02/2026

Comments accompanying signature: As of August 19, 2026, following the completion of the Merger, the Reporting Person beneficially owns zero shares of Series B common stock.