SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

SI-BONE, Inc.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

825704109

(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)

SCHEDULE 13G

CUSIP Number(s):

825704109

Names of Reporting Persons

Cadian Capital Management, LP

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

(a)

(b)

Sec Use Only

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 3,347,574.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,347,574.00

Aggregate Amount Beneficially Owned by Each Reporting Person

3,347,574.00

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

Checkbox not checked

Percent of class represented by amount in row (9)

7.5 %

Type of Reporting Person (See Instructions)

IA, PN

SCHEDULE 13G

CUSIP Number(s):

825704109

Names of Reporting Persons

Cadian Capital Management GP, LLC

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

(a)

(b)

Sec Use Only

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 3,347,574.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,347,574.00

Aggregate Amount Beneficially Owned by Each Reporting Person

3,347,574.00

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

Checkbox not checked

Percent of class represented by amount in row (9)

7.5 %

Type of Reporting Person (See Instructions)

OO, HC

SCHEDULE 13G

CUSIP Number(s):

825704109

Names of Reporting Persons

ERIC BANNASCH

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

(a)

(b)

Sec Use Only

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 3,347,574.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,347,574.00

Aggregate Amount Beneficially Owned by Each Reporting Person

3,347,574.00

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

Checkbox not checked

Percent of class represented by amount in row (9)

7.5 %

Type of Reporting Person (See Instructions)

IN, HC

SCHEDULE 13G

Item 1.

(a)

Name of issuer:

SI-BONE, Inc.

(b)

Address of issuer's principal executive offices:

471 El Camino Real, Suite 101, Santa Clara, California, 95050

Item 2.

(a)

Name of person filing:

(i) Cadian Capital Management, LP, (ii) Cadian Capital Management GP, LLC, and (iii) Eric Bannasch (collectively, the "Reporting Persons")

(b)

Address or principal business office or, if none, residence:

For each of the Reporting Persons: 535 Madison Avenue, 36th Floor, New York, New York 10022

(c)

Citizenship:

(i) Cadian Capital Management, LP is a Delaware limited partnership, (ii) Cadian Capital Management GP, LLC is a Delaware limited liability company, and (iii) Eric Bannasch is a United States citizen.

(d)

Title of class of securities:

Common Stock, par value $0.0001 per share

(e)

CUSIP Number(s):

825704109

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 the Reporting Persons may have been deemed to have beneficially owned 3,347,574 shares of Common Stock, par value $0.0001 per share ("Common Stock"), of SI-BONE, Inc. (the "Issuer"). All securities reported in this Schedule 13G were directly held by Cadian Master Fund L.P. and Cadian Opportunities Master Fund LP (collectively, the "Advisory Clients"), advisory clients of Cadian Capital Management, LP (the "Adviser"). Pursuant to Investment Management Agreements between the Advisory Clients and the Adviser, the Adviser exercises exclusive voting and investment power over securities directly held by the Advisory Clients. Cadian Capital Management GP, LLC is the general partner of the Adviser. Eric Bannasch is the sole managing member of Cadian Capital Management GP, LLC.

(b)

Percent of class:

As of June 30, 2026, each of the Reporting Persons may have been deemed to have beneficially owned approximately 7.5% of the shares of Common Stock of the Issuer outstanding, based on 44,697,215 shares of Common Stock outstanding as of June 30, 2026, as disclosed in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on August 4, 2026.

(c)

Number of shares as to which the person has:

(i) Sole power to vote or to direct the vote:

As of June 30, 2026, each of the Reporting Persons may have been deemed to have had sole power to vote or to direct the vote of 0 shares of Voting Common Stock.

(ii) Shared power to vote or to direct the vote:

As of June 30, 2026, each of the Reporting Persons may have been deemed to have had shared power to vote or to direct the vote of 3,347,574 shares of Voting Common Stock.

(iii) Sole power to dispose or to direct the disposition of:

As of June 30, 2026, each of the Reporting Persons may have been deemed to have had sole power to dispose or to direct the disposition of 0 shares of Voting Common Stock.

(iv) Shared power to dispose or to direct the disposition of:

As of June 30, 2026, each of the Reporting Persons may have been deemed to have had shared power to dispose or to direct the disposition of 3,347,574 shares of Voting Common Stock.

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.

If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.

All securities reported in this Schedule 13G were directly held by the Advisory Clients. Cadian Master Fund L.P. individually directly holds Common Stock representing more than 5% of the Issuer's Common Stock.

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.

The disclosure regarding the relationships among the Reporting Persons in Item 4 is incorporated by reference herein.

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.

Cadian Capital Management, LP

Signature:	/s/ Eric Bannasch
Name/Title:	Eric Bannasch/Managing Member, Cadian Capital Management GP, LLC, its General Partner
Date:	08/14/2026

Cadian Capital Management GP, LLC

Signature:	/s/ Eric Bannasch
Name/Title:	Eric Bannasch/Managing Member
Date:	08/14/2026

ERIC BANNASCH

Signature:	/s/ Eric Bannasch
Name/Title:	Eric Bannasch/Self
Date:	08/14/2026

Exhibit Information

99.1 Joint Filing Agreement, dated as of August 14, 2026 by and among the Reporting Persons