StoneCo: Madrone Partners sells 750,000 shares

The ownership percentages are calculated against 232,663,503 Class A common shares outstanding as of December 31, 2025.

Rhea-AI Filing Summary

StoneCo Ltd. (STNE) reports that Madrone Partners, L.P. sold 750,000 Class A common shares in an open market sale on October 5, 2026. The weighted average price was $11.90 per share, with reported prices ranging from $11.75 to $12.02.

Madrone Partners reported beneficial ownership of 24,589,276 shares. The same amount was reported by its general partner, Madrone Capital Partners, LLC, and managing director Thomas Patterson; managing directors Jameson J. McJunkin and Gregory Boyd Penner reported 24,911,276 and 25,228,161 shares, respectively. McJunkin's reported amount includes 322,000 shares held through his living trust, and Penner's includes 638,885 shares held through Shimoda Holdings LLC. The reported ownership percentages use StoneCo's 232,663,503 Class A common shares outstanding as of December 31, 2025.

Filing Explained

The amendment reports 24,589,276 shares for Madrone Partners, its general partner, and Thomas Patterson; these are overlapping reports of shared power over Madrone’s same shares, not three separate blocks.

Key Figures

Shares sold: 750,000 shares Weighted average price: $11.90 per share Low sale price: $11.75 per share +5 more

8 metrics

Shares sold 750,000 shares Madrone Partners open market sale on October 5, 2026

Weighted average price $11.90 per share Madrone Partners sale on October 5, 2026

Low sale price $11.75 per share Reported price range for the October 5, 2026 sale

High sale price $12.02 per share Reported price range for the October 5, 2026 sale

Class A common shares outstanding 232,663,503 shares As of December 31, 2025; basis for the reported ownership percentages

Madrone Partners beneficial ownership 24,589,276 shares Reported beneficial ownership

Jameson J. McJunkin beneficial ownership 24,911,276 shares Reported beneficial ownership

Gregory Boyd Penner beneficial ownership 25,228,161 shares Reported beneficial ownership

Key Terms

beneficially owned, shared voting power, dispositive power, weighted average price

4 terms

beneficially owned regulatory

"aggregate amount beneficially owned"

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.

shared voting power regulatory

"Shared Voting Power"

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 regulatory

"Shared Dispositive Power"

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.

weighted average price financial

"Weighted Average Price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

FAQ

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

How many STNE shares did Madrone Partners sell, and at what price?

Madrone Partners sold 750,000 Class A common shares on October 5, 2026, at a weighted average price of $11.90 per share. Reported prices ranged from $11.75 to $12.02.

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

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Available on EDGAR 10/07/2026 - 04:19 PM Accepted by SEC EDGAR 10/07/2026 - 04:18 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)

StoneCo Ltd.

(Name of Issuer)

Class A Common Shares, par value US$0.000079365

(Title of Class of Securities)

G85158106

(CUSIP Number)

Thomas Patterson
c/o Madrone Advisors, LLC, P.O. Box #6476
Denver, CO, 80206
(650) 854-8300

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

10/05/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): G85158106

1

Name of reporting person

Madrone Partners, L.P.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 24,589,276.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 24,589,276.00

11

Aggregate amount beneficially owned by each reporting person

24,589,276.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

10.6 %

14

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13D

CUSIP Number(s): G85158106

1

Name of reporting person

Madrone Capital Partners, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 24,589,276.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 24,589,276.00

11

Aggregate amount beneficially owned by each reporting person

24,589,276.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

10.6 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP Number(s): G85158106

1

Name of reporting person

Jameson J. McJunkin

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 24,911,276.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 24,911,276.00

11

Aggregate amount beneficially owned by each reporting person

24,911,276.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

10.7 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP Number(s): G85158106

1

Name of reporting person

Thomas Patterson

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 24,589,276.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 24,589,276.00

11

Aggregate amount beneficially owned by each reporting person

24,589,276.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

10.6 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP Number(s): G85158106

1

Name of reporting person

Gregory Boyd Penner

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC, PF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 25,228,161.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 25,228,161.00

11

Aggregate amount beneficially owned by each reporting person

25,228,161.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

10.8 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Class A Common Shares, par value US$0.000079365
(b)	Name of Issuer: StoneCo Ltd.
(c)	Address of Issuer's Principal Executive Offices: 4th Floor, Harbour Place, 103 South Church Street, P.O. Box 10240, Grand Cayman, CAYMAN ISLANDS , KY1-1002.
Item 1 Comment: This Amendment No. 3 (this "Amendment No. 3" or this "Schedule 13D/A") amends and supplements the statement on Schedule 13D originally filed with the Securities and Exchange Commission (the "SEC") on November 7, 2018, and amended on December 12, 2018 and December 18, 2020 (as amended, the "Statement") by the Reporting Persons. Unless otherwise defined herein, capitalized terms used in this Amendment No. 3 shall have the meanings ascribed to them in the Statement. Unless amended or supplemented below, the information in the Statement remains unchanged.
Item 2.	Identity and Background
(a)	This Schedule 13D is being filed on behalf of Madrone Partners, L.P. ("Madrone"), Madrone Capital Partners, LLC ("Madrone GP"), Gregory Penner ("Penner"), Jameson McJunkin ("McJunkin") and Thomas Patterson ("Patterson"). The foregoing entities and individuals are collectively referred to herein as the "Reporting Persons." The agreement among the Reporting Persons to file this Schedule 13D jointly in accordance with Rule 13d-1(k) of the Act is filed as Exhibit 99.1.
(b)	The business address of the Reporting Persons is P.O. Box #6476, Denver, CO 80206.
(c)	The principal business of Madrone is venture capital investments. Madrone GP performs the functions of, and serves as, the sole general partner of Madrone. Each of Messrs. Penner, McJunkin and Patterson is a managing director of Madrone GP.
(d)	During the last five years, none of the Reporting Persons has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).
(e)	During the last five years, none of the Reporting Persons has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
(f)	Each of the entities was organized in the state of Delaware and each of the individuals is a United States citizen.
Item 5.	Interest in Securities of the Issuer
(a)	Rows 11 and 13 of each Reporting Person's cover page to this Schedule 13D/A set forth the aggregate number of Class A common shares of the Issuer and percentage of the Class A common shares of the Issuer beneficially owned by such Reporting Person and are incorporated herein by reference. The percentage set forth in row 13 of each cover page is based upon 232,663,503 Class A common shares outstanding as of December 31, 2025, as reported in the Issuer's Annual Report on Form 20-F filed with the Securities and Exchange Commission (the "SEC") on April 23, 2026. The Reporting Persons' ownership of the Issuer's securities consists of (i) 24,589,276 Class A common shares directly held by Madrone; (ii) 322,000 Class A common shares held by McJunkin through the McJunkin Living Trust, of which he is a co-trustee; and (iii) 638,885 Class A common shares held by Penner through Shimoda Holdings LLC, a family LLC, of which he is a managing member. Madrone GP is the sole general partner of Madrone. McJunkin, Patterson and Penner are Managing Members of Madrone GP and may share voting and dispositive power over the shares held by Madrone.
(b)	Rows 7 through 10 of each Reporting Person's cover page to this Schedule 13D/A set forth the number of Class A common shares of the Issuer as to which such Reporting Person has the sole or shared power to vote or direct the vote and sole or shared power to dispose or to direct the disposition and are incorporated herein by reference.
(c)	Except as set forth below, none of the Reporting Persons has effected any transactions with respect to the securities of the Issuer during the past sixty days. Weighted Low High Reporting Transaction No. of Average Price Price Transaction Person Date Shares Price ($) ($) ($) Open Market Sale Madrone 10/05/2026 750,000 11.90 11.75 12.02 The Reporting Persons undertake 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 sold at each separate price within the ranges set forth above.
(d)	No other person is known to have the right to receive or the power to direct the receipt of dividends from, or any proceeds from the sale of, the securities beneficially owned by any of the Reporting Persons.
(e)	Not applicable.
Item 7.	Material to be Filed as Exhibits.
	Exhibit 99.1 Joint Filing Agreement

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.

Madrone Partners, L.P.

Signature:	/s/ Thomas Patterson
Name/Title:	By Madrone Capital Partners, LLC, its General Partner, By Thomas Patterson, Managing Member
Date:	10/07/2026

Madrone Capital Partners, LLC

Signature:	/s/ Thomas Patterson
Name/Title:	By Thomas Patterson, Managing Member
Date:	10/07/2026

Jameson J. McJunkin

Signature:	/s/ Jameson McJunkin
Name/Title:	Jameson McJunkin
Date:	10/07/2026

Thomas Patterson

Signature:	/s/ Thomas Patterson
Name/Title:	Thomas Patterson
Date:	10/07/2026

Gregory Boyd Penner

Signature:	/s/ Gregory Penner
Name/Title:	Gregory Penner
Date:	10/07/2026