Teamshares gets 1.61% stake filing from Magnetar

Magnetar-affiliated funds report a 1.61% beneficial stake in Teamshares Inc., with shared voting and dispositive power over 855,000 common shares.

Rhea-AI Filing Summary

Teamshares Inc. (TMS) received an amended Schedule 13G/A reporting that Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman collectively beneficially owned 855,000 shares of Teamshares common stock as of June 30, 2026.

This position represents approximately 1.61% of the outstanding shares, based on 73,660,516 shares outstanding reported in Teamshares’ Form 10-Q filed on August 14, 2026. The reporting group has shared voting and dispositive power over all 855,000 shares and no sole voting or dispositive power, and confirms ownership of 5 percent or less of the class.

Key Figures

Beneficial ownership: 855,000 shares Percent of class: 1.61% Shares outstanding: 73,660,516 shares +4 more

7 metrics

Beneficial ownership 855,000 shares Teamshares common stock beneficially owned by the Magnetar reporting group as of June 30, 2026

Percent of class 1.61% Portion of Teamshares common stock outstanding represented by the Magnetar group’s 855,000 shares

Shares outstanding 73,660,516 shares Teamshares common shares outstanding used to compute ownership percentage, from Form 10-Q filed August 14, 2026

Shared voting power 855,000 shares Shares over which the reporting persons share power to vote or direct the vote

Sole voting power 0 shares Shares over which the reporting persons have sole power to vote or direct the vote

Constellation Master Fund allocation 188,102 shares Portion of the 855,000 Teamshares shares held for Magnetar Constellation Master Fund, Ltd

Lake Credit Fund allocation 171,004 shares Portion of the 855,000 Teamshares shares held for Magnetar Lake Credit Fund LLC

Key Terms

Beneficial owner, Shared voting power, Dispositive power, Schedule 13G/A, +1 more

5 terms

Beneficial owner financial

"each of the Reporting Persons were deemed to be the beneficial owner constituting approximately 1.61%"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Shared voting power financial

"Shared power to vote or to direct the vote: 855,000"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

Dispositive power financial

"Shared power to dispose or to direct the disposition of: 855,000"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Schedule 13G/A regulatory

"Ownership of 5 Percent or Less of a Class. | Ownership of 5 percent or less of a class"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Power of Attorney regulatory

"Power of Attorney, dated as of December 22, 2022 filed by the Reporting Persons"

A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.

FAQ

What ownership stake in Teamshares Inc. (TMS) do the Magnetar entities report in this Schedule 13G/A?

They report beneficial ownership of 855,000 Teamshares common shares, representing about 1.61% of the outstanding stock as of June 30, 2026, based on 73,660,516 shares outstanding disclosed in Teamshares’ Form 10-Q filed on August 14, 2026.

Who are the reporting persons in the Teamshares Inc. (TMS) Schedule 13G/A amendment?

The reporting persons are Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman. Magnetar Financial advises the Magnetar Funds, Magnetar Capital Partners is its sole member, Supernova Management is the general partner, and Mr. Snyderman is Supernova’s administrative manager.

How much voting and dispositive power over TMS shares do the Magnetar entities report?

They report 0 shares with sole voting or dispositive power and 855,000 shares with shared voting and shared dispositive power. All voting and investment decisions for these shares are exercised on a shared basis across the reporting group linked to the Magnetar Funds.

How is the 855,000-share Teamshares (TMS) position allocated among the Magnetar Funds?

The 855,000 shares consist of 188,102 for Constellation Master Fund, 171,004 for Lake Credit Fund, 145,351 each for Structured Credit Fund and Xing He Master Fund, 94,094 for Alpha Star Fund, 68,397 for SC Fund, 25,649 for Waterfront Series A Fund, and 17,097 for Purpose Alternative Credit Fund - T.

Does this Schedule 13G/A indicate that Magnetar owns more or less than 5% of Teamshares (TMS)?

The filing states that the reporting persons’ holdings constitute 5 percent or less of the class. Their 1.61% beneficial ownership of Teamshares common stock is below the 5% threshold used for significant beneficial ownership reporting.

What date is used to calculate the Magnetar group’s percentage ownership of Teamshares (TMS)?

The percentage is calculated as of June 30, 2026. The 1.61% figure is based on 73,660,516 Teamshares common shares outstanding, as reported by Teamshares in its Form 10-Q filed on August 14, 2026.

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

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Available on EDGAR 09/04/2026 - 09:06 AM Accepted by SEC EDGAR 09/04/2026 - 09:02 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

TEAMSHARES INC.

(Name of Issuer)

Common Stock, par value $0.0001

(Title of Class of Securities)

87821B109

(CUSIP Number)

06/30/2026

(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): 87821B109

1

Names of Reporting Persons

MAGNETAR FINANCIAL 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 855,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 855,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

855,000.00

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)

1.61 %

12

Type of Reporting Person (See Instructions)

IA, OO

SCHEDULE 13G

CUSIP Number(s): 87821B109

1

Names of Reporting Persons

MAGNETAR CAPITAL PARTNERS LP

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 855,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 855,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

855,000.00

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)

1.61 %

12

Type of Reporting Person (See Instructions)

HC, PN

SCHEDULE 13G

CUSIP Number(s): 87821B109

1

Names of Reporting Persons

SUPERNOVA MANAGEMENT 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 855,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 855,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

855,000.00

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)

1.61 %

12

Type of Reporting Person (See Instructions)

HC, OO

SCHEDULE 13G

CUSIP Number(s): 87821B109

1

Names of Reporting Persons

DAVID J. SNYDERMAN

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 855,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 855,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

855,000.00

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)

1.61 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: TEAMSHARES INC.
(b)	Address of issuer's principal executive offices: 214 Sullivan Street 3B, New York, NY 10012
Item 2.
(a)	Name of person filing: This statement is filed on behalf of each of the following person (collectively, the "Reporting Persons"): i) Magnetar Financial LLC ("Magnetar Financial"); ii) Magnetar Capital Partners LP ("Magnetar Capital Partners"); iii) Supernova Management LLC ("Supernova Management"); and iv) David J. Snyderman ("Mr. Snyderman"). This statement relates to the Shares (as defined herein) held for Magnetar Constellation Master Fund, Ltd ("Constellation Master Fund"), Magnetar Xing He Master Fund Ltd ("Xing He Master Fund"), Magnetar SC Fund Ltd ("SC Fund"), all Cayman Islands exempted companies; Magnetar Structured Credit Fund, LP ("Structured Credit Fund"), a Delaware limited partnership; Magnetar Alpha Star Fund LLC ("Alpha Star Fund"), Magnetar Lake Credit Fund LLC ("Lake Credit Fund"), Purpose Alternative Credit Fund - T LLC ("Purpose Alternative Credit Fund - T"), and Magnetar Waterfront Series A LLC ("Waterfront Series A Fund"), all Delaware limited liability companies; collectively (the "Magnetar Funds"). Magnetar Financial serves as the investment adviser to the Magnetar Funds, and as such, Magnetar Financial exercises voting and investment power over the Shares held for the Magnetar Funds' accounts. Magnetar Capital Partners serves as the sole member and parent holding company of Magnetar Financial. Supernova Management is the general partner of Magnetar Capital Partners. The administrative manager of Supernova Management is Mr. Snyderman.
(b)	Address or principal business office or, if none, residence: The address of the principal business office of each of Magnetar Financial, Magnetar Capital Partners, Supernova Management, and Mr. Snyderman is 1603 Orrington Avenue, 13th Floor, Evanston, Illinois 60201.
(c)	Citizenship: Place of Organization. i) Magnetar Financial is a Delaware limited liability company; ii) Magnetar Capital Partners is a Delaware limited partnership; iii) Supernova Management is a Delaware limited liability company; and iv) Mr. Snyderman is a citizen of the United States of America.
(d)	Title of class of securities: Common Stock, par value $0.0001
(e)	CUSIP No.: 87821B109
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: As of June 30, 2026, each of Magnetar Financial, Magnetar Capital Partners, Supernova Management and Mr. Snyderman held 855,000 Shares. The amount consists of (A) 188,102 Shares held for the account of Constellation Master Fund; (B) 171,004 Shares held for the account of Lake Credit Fund; (C) 145,351 Shares held for the account of Structured Credit Fund; (D) 145,351 Shares held for the account of Xing He Master Fund; (E) 94,094 Shares held for the account of Alpha Star Fund; (F) 68,397 Shares held for the account of SC Fund; (G) 25,649 shares held for the account of Waterfront Series A Fund; and (H) 17,097 Shares held for the account Purpose Alternative Credit Fund - T. The Shares held by the Magnetar Funds represent approximately 1.61% of the total number of Shares outstanding (calculated pursuant to Rule 13d-3(d)(1)(i) of the outstanding shares of the Issuer).
(b)	Percent of class: As of June 30, 2026, each of the Reporting Persons were deemed to be the beneficial owner constituting approximately 1.61% of the total number of shares outstanding (based upon the information provided by the Issuer in the Form 10-Q filed on August 14, 2026 there were approximately 73,660,516 Shares outstanding).
(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: 855,000
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 855,000
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 acquired and are held in the ordinary course of business and 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.

MAGNETAR FINANCIAL LLC

Signature:	/s/ Hayley Stein
Name/Title:	Name: Hayley Stein, Title: Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC
Date:	09/04/2026

MAGNETAR CAPITAL PARTNERS LP

Signature:	/s/ Hayley Stein
Name/Title:	Name: Hayley Stein, Title: Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC
Date:	09/04/2026

SUPERNOVA MANAGEMENT LLC

Signature:	/s/ Hayley Stein
Name/Title:	Name: Hayley Stein, Title: Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC
Date:	09/04/2026

DAVID J. SNYDERMAN

Signature:	/s/ Hayley Stein
Name/Title:	Name: Hayley Stein, Title: Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC
Date:	09/04/2026

Comments accompanying signature: MAGNETAR FINANCIAL LLC BY: Magnetar Capital Partners LP, its Sole Member BY: Supernova Management LLC, its General Partner MAGNETAR CAPITAL PARTNERS LP By: Supernova Management LLC, its General Partner

Exhibit Information

99.1 Joint Filing Agreement, dated as of September 4, 2026, among the Reporting Persons. 99.2 Power of Attorney, dated as of December 22, 2022 filed by the Reporting Persons on September 4, 2026.