# EDGAR Filing Document

**Accession Number:** 0001389545
**File Stem:** 0001193125-26-237063
**Filing Date:** 2026-5
**Character Count:** 17494
**Document Hash:** 69f37d828f1e3a2d48e3ef6a38215f5e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-237063.hdr.sgml**: 20260522

**ACCESSION NUMBER**: 0001193125-26-237063

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260522

**DATE AS OF CHANGE**: 20260522

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Stablecoin Development Corp
- **CENTRAL INDEX KEY:** 0001389545
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 680454536
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-83670
- **FILM NUMBER:** 261014634

**BUSINESS ADDRESS:**
- **STREET 1:** 2000 POWELL STREET, SUITE 1150
- **CITY:** EMERYVILLE
- **STATE:** CA
- **ZIP:** 94608
- **BUSINESS PHONE:** (510) 899-8800

**MAIL ADDRESS:**
- **STREET 1:** 2000 POWELL STREET, SUITE 1150
- **CITY:** EMERYVILLE
- **STATE:** CA
- **ZIP:** 94608

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NovaBay Pharmaceuticals, Inc.
- **DATE OF NAME CHANGE:** 20070209
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Tether Global Investments Fund, S.I.C.A.F., S.A.
- **CENTRAL INDEX KEY:** 0002025889

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** H3
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** FINAL AV. LA REVOLUCION, EDIF. CENTRO
- **STREET 2:** CORPORATIVO PRESIDENTE PLAZA, NIVEL 12
- **CITY:** SAN SALVADOR
- **PROVINCE COUNTRY:** H3
- **BUSINESS PHONE:** 443333355842

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** FINAL AV. LA REVOLUCION, EDIF. CENTRO
- **STREET 2:** CORPORATIVO PRESIDENTE PLAZA, NIVEL 12
- **CITY:** SAN SALVADOR
- **PROVINCE COUNTRY:** H3

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Tether Holdings, S.A. de C.V.
- **DATE OF NAME CHANGE:** 20250204

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Tether Holdings Ltd
- **DATE OF NAME CHANGE:** 20240604

## Exhibit 99.1

&nbsp;&nbsp;&nbsp;&nbsp; <br>

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exhibit 99.1

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Joint Filing Agreement
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, each of the persons named below agrees to the joint filing of this Schedule 13G, including further amendments thereto, with respect to the Common Stock, par value of $0.01 per share, of Stablecoin Development Corporation and further agrees that this Joint Filing Agreement be filed with the Securities and Exchange Commission as an exhibit to such filing; provided, however, that no person shall be responsible for the completeness or accuracy of the information concerning the other persons making the filing unless such person knows or has reason to believe such information is inaccurate (as provided in Rule 13d-1(k)(1)(ii)). This Joint Filing Agreement may be executed in one or more counterparts, all of which together shall constitute one and the same instrument.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IN WITNESS WHEREOF, the persons named below have executed this Joint Filing Agreement as of the date set forth below.

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; May 22, 2026  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; May 22, 2026  |
| **&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TETHER GLOBAL INVESTMENTS FUND, S.I.C.A.F., S.A.**  | **&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TETHER GLOBAL INVESTMENTS FUND, S.I.C.A.F., S.A.**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; By:  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /s/ Omar Rossi  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Name: <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Omar Rossi  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Title:  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Sole Administrator  |

---

---

| | |
|:---|:---|
| **&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TETHER INVESTMENTS, S.A. DE C.V.**  | **&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TETHER INVESTMENTS, S.A. DE C.V.**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; By:  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /s/ Giancarlo Devasini  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Name: <br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Giancarlo Devasini  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Title:  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Sole Administrator  |

---

---

| |
|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /s/ Giancarlo Devasini  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Giancarlo Devasini, individually  |

---

&nbsp;&nbsp;&nbsp;&nbsp; <br>

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** Stablecoin Development Corp

**Title of Class of Securities:** Common Stock, par value $0.01 per share

**CUSIP Number:** —

**Date of Event Which Requires Filing of this Statement:** 05/17/2026

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [x] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Tether Global Investments Fund, S.I.C.A.F., S.A. | Names of Reporting Persons<br>Tether Global Investments Fund, S.I.C.A.F., S.A. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>H3 | Citizenship or Place of Organization<br>H3 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>3009502.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>3009502.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3009502.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3009502.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [x] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [x] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>9.99% | Percent of Class Represented by Amount in Row (9)<br>9.99% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

---

| 1. | Names of Reporting Persons<br>Tether Investments, S.A. de C.V. | Names of Reporting Persons<br>Tether Investments, S.A. de C.V. |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>H3 | Citizenship or Place of Organization<br>H3 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>3009502.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>3009502.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3009502.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3009502.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [x] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [x] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>9.99% | Percent of Class Represented by Amount in Row (9)<br>9.99% |
| 12. | Type of Reporting Person (See Instructions)<br>CO | Type of Reporting Person (See Instructions)<br>CO |

---

| 1. | Names of Reporting Persons<br>Giancarlo Devasini | Names of Reporting Persons<br>Giancarlo Devasini |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>L6 | Citizenship or Place of Organization<br>L6 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>3009502.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>3009502.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3009502.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3009502.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [x] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [x] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>9.99% | Percent of Class Represented by Amount in Row (9)<br>9.99% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

**Item 1(a). Name of Issuer:**
Stablecoin Development Corp

**Item 1(b). Address of Issuer's Principal Executive Offices:**
2000 POWELL STREET, SUITE 1150 EMERYVILLE CA 94608

**Item 2(a). Name of Person Filing:**
This statement is being filed by Tether Global Investments Fund, S.I.C.A.F., S.A., Tether Investments, S.A. de C.V. ("Tether Investments") and Giancarlo Devasini (collectively, the "Reporting Persons").

**Item 2(b). Address of Principal Business Office:**
The principal business address of the Reporting Persons is Final Av. La Revolucion, Colonia San Benito, Edif. Centro, Corporativo Presidente Plaza, Nivel 12, Oficina 2, Distrito de San Salvador, Municipio de San Salvador Centro, Republica de El Salvador.

**Item 2(c). Citizenship:**
Tether Global Investments Fund, S.I.C.A.F., S.A. and Tether Investments are organized under the laws of the Republic of El Salvador. Mr. Devasini is an Italian citizen.

**Item 2(d). Title of Class of Securities:**
Common Stock, par value $0.01 per share

**Item 2(e). CUSIP Number:**
—

**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:**

Due to the Ownership Limitation (as defined below), each Reporting Person may be deemed to beneficially own 3,009,502 shares of Common Stock, consisting of warrants exercisable for the same number of shares of Common Stock.
The securities reported herein are directly owned by Tether Investments, a controlled subsidiary of Tether Global Investments Fund, S.I.C.A.F., S.A. Mr. Giancarlo Devasini holds a greater than 50% voting interest in Tether Global Investments Fund, S.I.C.A.F., S.A., and thus indirectly holds voting and dispositive power with respect to the securities held by Tether Global Investments Fund, S.I.C.A.F., S.A., including securities held by Tether Investments.
The number of shares of Common Stock into which certain warrants held by Tether Investments are convertible is limited pursuant to the terms of such warrants to that number of shares of Common Stock that would result in the Reporting Persons and their affiliates having aggregate beneficial ownership of more than 9.99% of the total issued and outstanding shares of Common Stock (the "Ownership Limitation"). In accordance with Rule 13d-4 under the Exchange Act, the Reporting Persons disclaim beneficial ownership of any and all shares of Common Stock issuable upon any conversion of the warrants held by Tether Investments to the extent that such conversion would cause the Reporting Persons' aggregate beneficial ownership to exceed or remain above the Ownership Limitation. Due to the Ownership Limitation, as of the date of this filing, the Reporting Persons disclaim beneficial ownership with respect to the remaining 5,740,498 shares of Common Stock into which such warrants would otherwise be convertible.

**(b) Percent of class:**

See Item 11 of each of the cover pages.
This percentage is calculated based upon (i) 27,115,646 shares of Common Stock reported as issued and outstanding as of May 11, 2026, as disclosed in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 15, 2026, together with (ii) 3,009,502 shares of Common Stock issuable upon the conversion of certain warrants held by Tether Investments.

**(c) Number of shares as to which the person has:**

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

See Item 5 of each of the cover pages.

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

See Item 6 of each of the cover pages.

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

See Item 7 of each of the cover pages.

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

See Item 8 of each of the cover pages.

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

See Items 2 and 4 above.

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

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.

**Tether Global Investments Fund, S.I.C.A.F., S.A.**

**Date:** 05/22/2026

**By:** /s/ Omar Rossi

**Name & Title:** Omar Rossi, Sole Administrator

**Tether Investments, S.A. de C.V.**

**Date:** 05/22/2026

**By:** /s/ Giancarlo Devasini

**Name & Title:** Giancarlo Devasini, Sole Administrator

**Giancarlo Devasini**

**Date:** 05/22/2026

**By:** /s/ Giancarlo Devasini

**Name & Title:** Individual