SINTX Technologies reports that Stonepine entities and Jon M. Plexico jointly beneficially own 619,592 shares of Common Stock, equal to 9.9% of the class. The holdings comprise 209,205 shares and warrants to acquire 418,410 shares, subject to a 9.99% beneficial ownership limitation.
The filing cites 4,319,279 shares outstanding as of May 8, 2026 and notes 1,882,845 shares issued in a private placement referenced in a June 3, 2026 Form 8-K.
Positive
None.
Negative
None.
Insights
Stonepine and related parties report a near-10% economic stake in SINTX through shares and warrants.
The filing shows a combined position of 619,592 shares reported as 9.9% of the class, composed of 209,205 shares and 418,410 warrant equivalents subject to a 9.99% limitation. The percentage basis cites 4,319,279 shares outstanding as of May 8, 2026 and an additional 1,882,845 shares referenced from a private placement.
Cash-flow treatment and intent to exercise warrants are not stated in the excerpt; subsequent filings may disclose exercises or dispositions. Holder decisions and any exercise mechanics will determine future trading activity and potential dilution.
Key Figures
Reported shares beneficially owned:619,592 sharesPercent of class:9.9%Direct shares held:209,205 shares+4 more
7 metrics
Reported shares beneficially owned619,592 sharesAggregate position reported for Stonepine entities and Jon M. Plexico
Percent of class9.9%Percent of Common Stock represented by 619,592 shares
Direct shares held209,205 sharesCommon Stock directly held as stated in the filing
Warrants outstanding (reported)418,410 warrantsWarrants to acquire Common Stock included in beneficial ownership
Shares outstanding used in calculation4,319,279 sharesShares outstanding as of <date>May 8, 2026</date> per cited Form 10-Q
Private placement shares cited1,882,845 sharesShares issued in a private placement referenced from a <date>June 3, 2026</date> Form 8-K
Beneficial ownership cap9.99% limitationOwnership limitation applied to the warrants as stated in the filing
"subject to a 9.99% beneficial ownership limitation"
A beneficial ownership limitation is a rule that caps the percentage of a company’s shares an investor can be treated as owning or controlling for voting, regulatory or tax purposes. It matters to investors because it can restrict how many shares a person or group can buy or vote, affect takeover chances, and influence share liquidity and value — like a speed limit that prevents any single driver from taking over the whole road.
warrants to acquirefinancial
"warrants to acquire 418,410 shares of Common Stock"
shared voting powergovernance
"Shared Voting Power 619,592.00"
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.
Schedule 13Gregulatory
"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.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
SINTX Technologies, Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
829392703
(CUSIP Number)
06/02/2026
(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):
829392703
1
Names of Reporting Persons
Stonepine Capital 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
619,592.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
619,592.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
619,592.00
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)
9.9 %
12
Type of Reporting Person (See Instructions)
IA, OO
Comment for Type of Reporting Person: The securities beneficially owned by the reporting persons consist of (1) 209,205 shares of Common Stock, and (2) warrants to acquire 418,410 shares of Common Stock, subject to a 9.99% beneficial ownership limitation. The percentage reported herein is calculated based on (a) 4,319,279 shares of Common Stock outstanding as of May 8, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ending March 31, 2026, and (b) 1,882,845 shares of Common Stock issued by the Company in a private placement, as reported in the Form 8-K filed by the Issuer on June 3, 2026.
SCHEDULE 13G
CUSIP Number(s):
829392703
1
Names of Reporting Persons
Stonepine Capital, L.P.
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
619,592.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
619,592.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
619,592.00
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)
9.9 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: The securities beneficially owned by the reporting persons consist of (1) 209,205 shares of Common Stock, and (2) warrants to acquire 418,410 shares of Common Stock, subject to a 9.99% beneficial ownership limitation. The percentage reported herein is calculated based on (a) 4,319,279 shares of Common Stock outstanding as of May 8, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ending March 31, 2026, and (b) 1,882,845 shares of Common Stock issued by the Company in a private placement, as reported in the Form 8-K filed by the Issuer on June 3, 2026.
SCHEDULE 13G
CUSIP Number(s):
829392703
1
Names of Reporting Persons
Stonepine GP, 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
619,592.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
619,592.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
619,592.00
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)
9.9 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: The securities beneficially owned by the reporting persons consist of (1) 209,205 shares of Common Stock, and (2) warrants to acquire 418,410 shares of Common Stock, subject to a 9.99% beneficial ownership limitation. The percentage reported herein is calculated based on (a) 4,319,279 shares of Common Stock outstanding as of May 8, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ending March 31, 2026, and (b) 1,882,845 shares of Common Stock issued by the Company in a private placement, as reported in the Form 8-K filed by the Issuer on June 3, 2026.
SCHEDULE 13G
CUSIP Number(s):
829392703
1
Names of Reporting Persons
Jon M. Plexico
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
619,592.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
619,592.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
619,592.00
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)
9.9 %
12
Type of Reporting Person (See Instructions)
HC, IN
Comment for Type of Reporting Person: The securities beneficially owned by the reporting persons consist of (1) 209,205 shares of Common Stock, and (2) warrants to acquire 418,410 shares of Common Stock, subject to a 9.99% beneficial ownership limitation. The percentage reported herein is calculated based on (a) 4,319,279 shares of Common Stock outstanding as of May 8, 2026, as reported in the Form 10-Q filed by the Issuer for the quarter ending March 31, 2026, and (b) 1,882,845 shares of Common Stock issued by the Company in a private placement, as reported in the Form 8-K filed by the Issuer on June 3, 2026.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
SINTX Technologies, Inc.
(b)
Address of issuer's principal executive offices:
1885 West 2100 Street, Salt Lake City, UT 84119
Item 2.
(a)
Name of person filing:
Stonepine Capital Management, LLC, a Delaware limited liability company ("Stonepine")
Stonepine Capital, LP, a Delaware limited partnership (the "Partnership")
Stonepine GP, LLC, a Delaware limited liability company (the "General Partner")
Jon M. Plexico
Stonepine and the General Partner are the investment adviser and general partner, respectively, of the Partnership. Mr. Plexico is the control person of Stonepine and the General Partner. The reporting persons are filing this Schedule 13G jointly, but not as members of a group, and each disclaims membership in a group. Each reporting person also disclaims beneficial ownership of shares of Common Stock except to the extent of that person's pecuniary interest therein. In addition, the filing of this Schedule 13G on behalf of the Partnership should not be construed as an admission that it is, and it disclaims that it is, a beneficial owner, as defined in Rule 13d-3 under the Act, of any shares of Common Stock covered by this Schedule 13G.
(b)
Address or principal business office or, if none, residence:
2900 NW Clearwater Drive, Suite 100-11, Bend OR 97703
(c)
Citizenship:
See Item 4 of the cover sheet for each reporting person.
(d)
Title of class of securities:
Common Stock
(e)
CUSIP Number(s):
829392703
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:
Stonepine: 619,592
Partnership: 619,592
General Partner: 619,592
Jon M. Plexico: 619,592
(b)
Percent of class:
Stonepine: 9.9%
Partnership: 9.9%
General Partner: 9.9%
Jon M. Plexico: 9.9%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Stonepine: 0
Partnership: 0
General Partner: 0
Jon M. Plexico: 0
(ii) Shared power to vote or to direct the vote:
Stonepine: 619,592
Partnership: 619,592
General Partner: 619,592
Jon M. Plexico: 619,592
(iii) Sole power to dispose or to direct the disposition of:
Stonepine: 0
Partnership: 0
General Partner: 0
Jon M. Plexico: 0
(iv) Shared power to dispose or to direct the disposition of:
Stonepine: 619,592
Partnership: 619,592
General Partner: 619,592
Jon M. Plexico: 619,592
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.
The Partnership holds Common Stock for the benefit of its investors and has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, 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.
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.
Stonepine Capital Management, LLC
Signature:
/s/ Jon M. Plexico
Name/Title:
Managing Member
Date:
06/09/2026
Stonepine Capital, L.P.
Signature:
/s/ Jon M. Plexico
Name/Title:
Managing Member of the General Partner, Stonepine GP, LLC
Date:
06/09/2026
Stonepine GP, LLC
Signature:
/s/ Jon M. Plexico
Name/Title:
Managing Member
Date:
06/09/2026
Jon M. Plexico
Signature:
/s/ Jon M. Plexico
Name/Title:
Reporting Person
Date:
06/09/2026
Exhibit Information
EXHIBIT 99 - AGREEMENT REGARDING JOINT FILING OF STATEMENT ON SCHEDULE 13D OR 13G
Stonepine and related reporting persons beneficially own 619,592 shares, equal to 9.9% of the class. This position comprises 209,205 shares plus warrants to acquire 418,410 shares, subject to a 9.99% beneficial ownership limitation.
How was the 9.9% ownership percentage calculated?
The percentage is calculated using 4,319,279 shares outstanding as of May 8, 2026 and references 1,882,845 shares issued in a private placement reported in a June 3, 2026 Form 8-K as part of the filing's basis.
Do the reporting persons have sole voting or dispositive power over the shares?
No; the filing reports 0 sole voting power and 619,592 shared voting and dispositive power for each reporting person, indicating shared control rather than sole authority to vote or dispose of the shares.
What instruments comprise the reported beneficial ownership?
The position consists of 209,205 directly held Common Stock shares and warrants to acquire 418,410 shares. The warrants are included in the beneficial ownership calculation and are subject to a 9.99% ownership cap noted in the filing.
Does the filing say who receives proceeds if shares are sold?
The filing states the Partnership holds Common Stock for the benefit of its investors and has the right to direct receipt of dividends or sale proceeds. It does not specify transactions or who will receive proceeds from future sales.
