# EDGAR Filing Document

**Accession Number:** 0001782107
**File Stem:** 0001213900-23-011111
**Filing Date:** 2023-2
**Character Count:** 8522
**Document Hash:** 19c67635fc8ecb72c828c54a2eefc346
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-23-011111.hdr.sgml**: 20230214

**ACCESSION NUMBER**: 0001213900-23-011111

**CONFORMED SUBMISSION TYPE**: SC 13G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230214

**DATE AS OF CHANGE**: 20230214

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Blue Water Vaccines Inc.
- **CENTRAL INDEX KEY:** 0001782107
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SC 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-93586
- **FILM NUMBER:** 23622894

**BUSINESS ADDRESS:**
- **STREET 1:** 2041 COURTLAND AVENUE
- **CITY:** CINCINNATI
- **STATE:** OH
- **ZIP:** 45212
- **BUSINESS PHONE:** 646-303-0737

**MAIL ADDRESS:**
- **STREET 1:** 2041 COURTLAND AVENUE
- **CITY:** CINCINNATI
- **STATE:** OH
- **ZIP:** 45212
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hernandez Joseph
- **CENTRAL INDEX KEY:** 0001598384

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

**MAIL ADDRESS:**
- **STREET 1:** C/O MICROLIN BIO, INC.
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10022

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, D.C. 20549**

**SCHEDULE 13G**

**UNDER THE SECURITIES EXCHANGE ACT OF 1934**

**Blue Water Vaccines Inc.**

(Name of Issuer)

**Common Stock, par value $0.00001 per share**

(Title of Class of Securities)

**09610B108**

(CUSIP Number)

**December 31, 2022**

(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)

&nbsp;&nbsp;&nbsp;&nbsp;☒ Rule
13d-1(d)

\* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

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).

CUSIP 45032V108

1. Names
 of Reporting Persons Joseph
 Hernandez

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<br> Shares<br> Beneficially<br> Owned By<br> Each<br> Reporting<br> Person<br> With: | 5. | Sole Voting Power<br>2,850,351<sup>(1)</sup> |
| Number of<br> Shares<br> Beneficially<br> Owned By<br> Each<br> Reporting<br> Person<br> With: | 6. | Shared Voting Power<br>0 |
| Number of<br> Shares<br> Beneficially<br> Owned By<br> Each<br> Reporting<br> Person<br> With: | 7. | Sole Dispositive Power<br>2,850,351 <sup>(1)</sup> |
| Number of<br> Shares<br> Beneficially<br> Owned By<br> Each<br> Reporting<br> Person<br> With: | 8. | Shared Dispositive Power<br>0 |

---

9. Aggregate
 Amount Beneficially Owned by Each Reporting Person 2,850,351<sup>(1)</sup>

10. Check
 if the Aggregate Amount in Row (9) Excludes Certain Shares

11. Percent
 of Class Represented by Amount in Row (9) 18.43%<sup>(2)</sup>

12. Type
 of Reporting Person (See Instructions) IN

(1) Includes (i) 2,650,351 shares of common stock, which
 were purchased upon incorporation of the Issuer in October 2018 (as adjusted for a 4-for-1 stock split effected by the Company in
 November 2021 and (ii) 200,000 shares of common stock issuable upon exercise of options, granted on May 4, 2022 with an exercise
 price of $6.45, which fully vested on October 31, 2022.

(2) The percentage of the shares of common stock held by
 the Reporting Person is based on the sum of (i) a total of 15,265,228 shares of common stock outstanding as of December 31, 2022,
 and (ii) options to purchase 200,000 shares of common stock which are exercisable as of or within 60 days of December 31, 2022..

---

| | |
|:---|:---|
| **Item 1(a).** | **Name of Issuer** |

---

Blue Water Vaccines Inc. (the "Issuer")

---

| | |
|:---|:---|
| **Item 1(b).** | **Address of the Issuer's Principal Executive Offices** |

---

201 E. Fifth Street, Suite 1900

Cincinnati, OH 45202

---

| | |
|:---|:---|
| **Item 2(a).** | **Names of Persons Filing** |

---

Joseph Hernandez (the "Reporting Person")

---

| | |
|:---|:---|
| **Item 2(b).** | **Address of the Principal Business Office, or if none, Residence:** |

---

201 E. Fifth Street, Suite 1900

Cincinnati, OH 45202

---

| | |
|:---|:---|
| **Item 2(c).** | **Citizenship** |

---

United States of America

---

| | |
|:---|:---|
| **Item 2(d).** | **Title of Class of Securities** |

---

Common Stock, par value $0.00001 per share

---

| | |
|:---|:---|
| **Item 2(e).** | **CUSIP Number** |

---

09610B108

**Item 3.** **If this statement is filed pursuant to Rules <u>13d-1(b),</u> or <u>13d-2(b)</u> or (c), check whether the person filing is a:**

---

| | |
|:---|:---|
| ☐ | (a) Broker or Dealer registered under Section 15 of the Exchange Act. |
| ☐ | (b) Bank as defined in Section 3(a)(b) or the Exchange Act. |
| ☐ | (c) Insurance company as defined in Section 3(a)(19) of the Exchange Act. |
| ☐ | (d) Investment company registered under Section 8 of the Investment Company Act. |
| ☐ | (e) An Investment adviser in accordance with Rule 13d-1 (b)(1)(ii)(e). |
| ☐ | (f) An employee benefit plan or endowment fund in accordance with Rule 13d 1(b)(1)(ii)(f). |
| ☐ | (g) A Parent Holding Company or control person in accordance with Rule 13d 1(b)(1)(ii)(g). |
| ☐ | (h) A Savings Association as defined in Section 3(b) of the Federal Deposit Insurance Act. |
| ☐ | (i) A Church Plan that is excluded from the definition of an investment company under Section 3 (c)(14) of the Investment Company Act. |
| ☐ | (j) Group, in accordance with Rule 13d-1 (b)(1)(ii)(j). |
|  | Not applicable |

---

**Item 4.** **Ownership**

The responses to Items 5-11 of the cover pages of this Schedule 13G are incorporated herein by reference.

As of December 31, 2022, the Reporting Person may be deemed to beneficially own 2,850,351 shares of common stock, representing 18.43% of the total shares of common stock issued and outstanding of the Issuer as of December 31, 2022. The shares include (i) 2,650,351 shares of common stock and (ii) 200,000 shares of common stock issuable upon exercise of options, granted on May 4, 2022 with an exercise price of $6.45, which fully vested on October 31, 2022.

The percentage of the shares of common stock held by the Reporting Person is based on the sum of (i) a total of 15,265,228 shares of common stock outstanding as of December 31, 2022, and (ii) options to purchase 200,000 shares of common stock which are exercisable as of or within 60 days of December 31, 2022.

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

Not Applicable

**Item 6.** **Ownership of More than Five 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.** **Certification**

The Reporting Person hereby makes the following certification:

By signing below the Reporting Person hereby certifies that, to the best of his 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.

**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.

Date: February 14, 2023

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| | |
|:---|:---|
| By: | /s/ Joseph Hernandez |
| Name: | Joseph Hernandez |

---

**Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations**

**(See 18 U.S.C. 1001)**