Jane Street reports 1.47M shares (5.2%) in TSS, Inc.

TSS, Inc. disclosure: Jane Street Group, LLC and its subsidiaries report beneficial ownership of 1,466,261 shares of Common Stock, representing 5.2% of the class.

Rhea-AI Filing Summary

TSS, Inc. disclosure: Jane Street Group, LLC and its subsidiaries report beneficial ownership of 1,466,261 shares of Common Stock, representing 5.2% of the class. The filing attributes shared voting and dispositive power over those 1,466,261 shares to the reporting group.

The cover lists two subsidiary holders: Jane Street Capital, LLC (758,036 shares, 2.7%) and Jane Street Global Trading, LLC (708,225 shares, 2.5%), each shown with shared voting and dispositive power. The filing is signed by Jeremy Kahn.

Insights

Institutional Ownership Analyst

Large passive stake disclosure by an institutional trading group.

The filing shows an aggregate beneficial position of 1,466,261 shares or 5.2% held with shared voting and dispositive power. The disclosure lists two subsidiaries with specific per-entity counts, which clarifies internal allocation of the stake.

Timing and cash-flow treatment are not provided in the excerpt; subsequent filings would show whether this represents an accumulation, passive holding, or active trading mandate.

Corporate Governance Specialist

Shared power suggests voting coordination within the Jane Street group.

The schedule reports 0 sole voting/dispositive power and 1,466,261 shared voting/dispositive power. That structure indicates the group exercises control collectively through designated entities rather than an individual sole holder.

Investors reviewing governance should note the allocation by subsidiary: 758,036 and 708,225, respectively. Further filings may disclose any changes to voting arrangements.

Key Figures

Beneficial ownership: 1,466,261 shares Percent of class: 5.2% Jane Street Capital holdings: 758,036 shares +3 more

6 metrics

Beneficial ownership 1,466,261 shares Aggregate holding reported on Schedule 13G

Percent of class 5.2% Percent of common stock class reported

Jane Street Capital holdings 758,036 shares Subsidiary allocation (2.7%)

Jane Street Global Trading holdings 708,225 shares Subsidiary allocation (2.5%)

Sole voting power 0 Sole voting power reported as zero

Shared voting power 1,466,261 shares Shared voting power reported

Key Terms

Beneficial ownership, Shared dispositive power, Schedule 13G

3 terms

Beneficial ownership regulatory

"Item 4. | Ownership (a) | Amount beneficially owned: 1,466,261.00"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Shared dispositive power regulatory

"Item 4. | (iv) Shared power to dispose or to direct the disposition of: 1,466,261.00"

Schedule 13G regulatory

"CONTENT METADATA: "form_type": "SCHEDULE 13G""

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

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

What stake does Jane Street report in TSS, Inc. (TSSI)?

Jane Street Group reports beneficial ownership of 1,466,261 shares, equal to 5.2% of TSS, Inc. common stock, as stated on the cover page. The amount is shown as held with shared voting and dispositive power by the reporting group.

Which Jane Street entities are named as holders of TSSI shares?

The filing lists subsidiaries Jane Street Capital, LLC (holding 758,036 shares, 2.7%) and Jane Street Global Trading, LLC (holding 708,225 shares, 2.5%), each with shared voting and dispositive power.

Does Jane Street claim sole voting or dispositive power over the shares?

No. The schedule shows 0 shares with sole voting or dispositive power and 1,466,261 shares with shared voting and dispositive power, indicating collective control within the reporting group rather than individual sole authority.

Who signed the Schedule 13G filing for Jane Street?

The filing is signed by Jeremy Kahn as an authorized signatory for the reporting entities, with signature dates shown as 06/01/2026 in the provided excerpt.

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

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Accepted by SEC EDGAR 06/01/2026 - 04:24 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

TSS, Inc.

(Name of Issuer)

Common Stock, $.0001 par value

(Title of Class of Securities)

87288V101

(CUSIP Number)

05/26/2026

(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): 87288V101

1

Names of Reporting Persons

JANE STREET GROUP, LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,466,261.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,466,261.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,466,261.00

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)

5.2 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 87288V101

1

Names of Reporting Persons

Jane Street Capital, LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 758,036.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 758,036.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

758,036.00

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)

2.7 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

CUSIP Number(s): 87288V101

1

Names of Reporting Persons

Jane Street Global Trading, LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 708,225.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 708,225.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

708,225.00

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)

2.5 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: TSS, Inc.
(b)	Address of issuer's principal executive offices: 110 E. OLD SETTLERS ROAD, SUITE 100, ROUND ROCK, TEXAS, 78664.
Item 2.
(a)	Name of person filing: Jane Street Group, LLC; Jane Street Capital, LLC; Jane Street Global Trading, LLC;
(b)	Address or principal business office or, if none, residence: Jane Street Group, LLC 250 Vesey Street 6th Floor New York, NY 10281 Jane Street Capital, LLC 250 Vesey Street 6th Floor New York, NY 10281 Jane Street Global Trading, LLC 250 Vesey Street 6th Floor New York, NY 10281
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock, $.0001 par value
(e)	CUSIP Number(s): 87288V101
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: 1,466,261.00
(b)	Percent of class: 5.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 1,466,261.00
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 1,466,261.00
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. Subsidiary Jane Street Capital, LLC Jane Street Global Trading, LLC
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.

JANE STREET GROUP, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	06/01/2026

Jane Street Capital, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	06/01/2026

Jane Street Global Trading, LLC

Signature:	/s/ Jeremy Kahn
Name/Title:	Jeremy Kahn (Authorized Signatory)
Date:	06/01/2026