# EDGAR Filing Document

**Accession Number:** 0001455767
**File Stem:** 0001193125-23-032687
**Filing Date:** 2023-2
**Character Count:** 16492
**Document Hash:** c71465ff6d32f61bac1a25818b6c45e9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-032687.hdr.sgml**: 20230210

**ACCESSION NUMBER**: 0001193125-23-032687

**CONFORMED SUBMISSION TYPE**: SC 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230210

**DATE AS OF CHANGE**: 20230210

**GROUP MEMBERS**: POINT SUR INVESTORS FUND I, L.P.

**GROUP MEMBERS**: POINT SUR INVESTORS, LLC

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Biomea Fusion, Inc.
- **CENTRAL INDEX KEY:** 0001840439
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SC 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-92506
- **FILM NUMBER:** 23612544

**BUSINESS ADDRESS:**
- **STREET 1:** 900 MIDDLEFIELD ROAD
- **STREET 2:** 4TH FLOOR
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94063
- **BUSINESS PHONE:** (650) 980-9099

**MAIL ADDRESS:**
- **STREET 1:** 900 MIDDLEFIELD ROAD
- **STREET 2:** 4TH FLOOR
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94063
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Erdtmann Rainer M
- **CENTRAL INDEX KEY:** 0001455767

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

**MAIL ADDRESS:**
- **STREET 1:** 1073 ARLINGTON BLVD.
- **CITY:** EL CERRITO
- **STATE:** CA
- **ZIP:** 94530

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**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

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**SCHEDULE 13G** 

**Under the Securities Exchange Act of 1934** 

**(Amendment No. 1)\*** 

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## Biomea Fusion, Inc.
**(Name of Issuer)** 

**Common Stock** 

**(Title of Class of Securities)** 

**09077A106** 

**(CUSIP Number)** 

**December 31, 2022** 

**(Date of Event Which Requires Filing of this Statement)** 

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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)

\* 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 the disclosures provided in a prior cover page.

The information required in 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).

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13G/A

CUSIP No. **09077A106**

1. &nbsp;&nbsp;&nbsp;&nbsp; Names of Reporting Persons. &nbsp;&nbsp;&nbsp;&nbsp; Rainer M. Erdtmann

2. &nbsp;&nbsp;&nbsp;&nbsp; Check the Appropriate Box
if a Member of a Group &nbsp;&nbsp;&nbsp;&nbsp; (a) ☐ (b) ☒

3. &nbsp;&nbsp;&nbsp;&nbsp; SEC Use Only

4. &nbsp;&nbsp;&nbsp;&nbsp; Citizenship or Place of
Organization &nbsp;&nbsp;&nbsp;&nbsp; United States of
America

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 5. | &nbsp;&nbsp;&nbsp;&nbsp;Sole Voting Power<br>&nbsp;&nbsp;&nbsp;&nbsp;2,226,073 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 6. | &nbsp;&nbsp;&nbsp;&nbsp;Shared Voting Power<br>&nbsp;&nbsp;&nbsp;&nbsp;480,790 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 7. | &nbsp;&nbsp;&nbsp;&nbsp;Sole Dispositive Power<br>&nbsp;&nbsp;&nbsp;&nbsp;2,226,073 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 8. | &nbsp;&nbsp;&nbsp;&nbsp;Shared Dispositive Power<br>&nbsp;&nbsp;&nbsp;&nbsp;480,790 |

---

9. &nbsp;&nbsp;&nbsp;&nbsp; Aggregate Amount Beneficially Owned by Each Reporting Person &nbsp;&nbsp;&nbsp;&nbsp; 2,706,863 (1)

10. &nbsp;&nbsp;&nbsp;&nbsp; Check if the Aggregate
Amount in Row (9) Excludes Certain Shares &nbsp;&nbsp;&nbsp;&nbsp; ☐

11. &nbsp;&nbsp;&nbsp;&nbsp; Percent of Class
Represented by Amount in Row (9) &nbsp;&nbsp;&nbsp;&nbsp; 9.2% (2)

12. &nbsp;&nbsp;&nbsp;&nbsp; Type of Reporting
Person &nbsp;&nbsp;&nbsp;&nbsp; IN

------

(1) Consists of (i) 76,059 shares of Common Stock held directly by Rainer M. Erdtmann, (ii) 162,043 shares of
Common Stock issuable within 60 days after December 31, 2022 upon the exercise of options held directly by Rainer M. Erdtmann, (iii) an aggregate of 20,400 shares of Common Stock held by the children of Rainer M. Erdtmann, (iv) 657,968
shares of Common Stock held by a family trust of which Rainer M. Erdtmann is the trustee ("Family Trust"), (v) 174,614 shares of Common Stock held by a trust having an independent trustee ("Trust 1"), (vi) 1,134,989 shares of
Common Stock held by a trust with an independent trustee ("Trust 2"), (vii) 228,470 shares of Common Stock held directly by Point Sur Investors Fund I, L.P. ("Point Sur Investors Fund"), and (viii) 252,320 shares of Common Stock
held directly by Point Sur Investors, LLC ("Point Sur LLC"). Point Sur LLC is the General Partner of Point Sur Investors Fund. Thomas Butler and Rainer M. Erdtmann are the managing members of Point Sur LLC. As such, Mr. Butler and
Mr. Erdtmann have shared voting and dispositive power over the securities held by Point Sur Investors Fund and Point Sur LLC.

(2) Percentage ownership is based on (i) 29,396,246 shares of Common Stock outstanding as of October 31, 2022,
as disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 7, 2022 and (ii) 162,043 shares of Common Stock issuable within 60 days after
December 31, 2022 upon the exercise of options held directly by Rainer M. Erdtmann, which have been added to the Common Stock reported as outstanding in accordance with Rule 13d-3(d)(1)(i) under the Act.

------

13G/A

CUSIP No. **09077A106**

1. &nbsp;&nbsp;&nbsp;&nbsp; Names of Reporting Persons. &nbsp;&nbsp;&nbsp;&nbsp; Point Sur Investors, LLC

2. &nbsp;&nbsp;&nbsp;&nbsp; Check the Appropriate Box
if a Member of a Group &nbsp;&nbsp;&nbsp;&nbsp; (a) ☐ (b) ☒

3. &nbsp;&nbsp;&nbsp;&nbsp; SEC Use Only

4. &nbsp;&nbsp;&nbsp;&nbsp; Citizenship or Place of
Organization &nbsp;&nbsp;&nbsp;&nbsp; Delaware

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 5. | &nbsp;&nbsp;&nbsp;&nbsp;Sole Voting Power<br>&nbsp;&nbsp;&nbsp;&nbsp;480,790 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 6. | &nbsp;&nbsp;&nbsp;&nbsp;Shared Voting Power<br>&nbsp;&nbsp;&nbsp;&nbsp;0 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 7. | &nbsp;&nbsp;&nbsp;&nbsp;Sole Dispositive Power<br>&nbsp;&nbsp;&nbsp;&nbsp;480,790 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 8. | &nbsp;&nbsp;&nbsp;&nbsp;Shared Dispositive Power<br>&nbsp;&nbsp;&nbsp;&nbsp;0 |

---

9. &nbsp;&nbsp;&nbsp;&nbsp; Aggregate Amount Beneficially Owned by Each Reporting Person &nbsp;&nbsp;&nbsp;&nbsp; 480,790 (1)

10. &nbsp;&nbsp;&nbsp;&nbsp; Check if the Aggregate
Amount in Row (9) Excludes Certain Shares &nbsp;&nbsp;&nbsp;&nbsp; ☐

11. &nbsp;&nbsp;&nbsp;&nbsp; Percent of Class
Represented by Amount in Row (9) &nbsp;&nbsp;&nbsp;&nbsp; 1.6% (2)

12. &nbsp;&nbsp;&nbsp;&nbsp; Type of Reporting
Person &nbsp;&nbsp;&nbsp;&nbsp; PN

------

(1) Consists of (i) 228,470 shares of Common Stock held directly by Point Sur Investors Fund I, L.P. ("Point
Sur Investors Fund") and (ii) 252,320 shares of Common Stock held directly by Point Sur Investors, LLC ("Point Sur LLC"). Point Sur LLC is the General Partner of Point Sur Investors Fund and as such, has voting and dispositive power
over the securities held by Point Sur Investors Fund.

(2) Percentage ownership is based on 29,396,246 shares of Common Stock outstanding as of October 31, 2022, as
disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 7, 2022.

------

13G/A

CUSIP No. **09077A106**

1. &nbsp;&nbsp;&nbsp;&nbsp; Names of Reporting Persons. &nbsp;&nbsp;&nbsp;&nbsp; Point Sur Investors Fund I, L.P.

2. &nbsp;&nbsp;&nbsp;&nbsp; Check the Appropriate Box
if a Member of a Group &nbsp;&nbsp;&nbsp;&nbsp; (a) ☐ (b) ☒

3. &nbsp;&nbsp;&nbsp;&nbsp; SEC Use Only

4. &nbsp;&nbsp;&nbsp;&nbsp; Citizenship or Place of
Organization &nbsp;&nbsp;&nbsp;&nbsp; Delaware

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 5. | &nbsp;&nbsp;&nbsp;&nbsp;Sole Voting Power<br>&nbsp;&nbsp;&nbsp;&nbsp;228,470 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 6. | &nbsp;&nbsp;&nbsp;&nbsp;Shared Voting Power<br>&nbsp;&nbsp;&nbsp;&nbsp;0 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 7. | &nbsp;&nbsp;&nbsp;&nbsp;Sole Dispositive Power<br>&nbsp;&nbsp;&nbsp;&nbsp;228,470 |
| &nbsp;&nbsp;&nbsp; Number of<br> Shares<br> Beneficially <br> Owned by<br> Each<br> Reporting<br> Person<br> With: | 8. | &nbsp;&nbsp;&nbsp;&nbsp;Shared Dispositive Power<br>&nbsp;&nbsp;&nbsp;&nbsp;0 |

---

9. &nbsp;&nbsp;&nbsp;&nbsp; Aggregate Amount Beneficially Owned by Each Reporting Person &nbsp;&nbsp;&nbsp;&nbsp; 228,470

10. &nbsp;&nbsp;&nbsp;&nbsp; Check if the Aggregate
Amount in Row (9) Excludes Certain Shares &nbsp;&nbsp;&nbsp;&nbsp; ☐

11. &nbsp;&nbsp;&nbsp;&nbsp; Percent of Class
Represented by Amount in Row (9) &nbsp;&nbsp;&nbsp;&nbsp; 0.8% (1)

12. &nbsp;&nbsp;&nbsp;&nbsp; Type of Reporting
Person &nbsp;&nbsp;&nbsp;&nbsp; PN

------

(1) Percentage ownership is based on 29,396,246 shares of Common Stock outstanding as of October 31, 2022, as
disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 7, 2022.

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CUSIP No. **09077A106**

**ITEM 1.** 

(a) Name of Issuer: **Biomea Fusion, Inc.**

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Address of Issuer's Principal Executive Offices: | **900 Middlefield Road, 4th Floor** |
|  | **Redwood City, CA 94063** |

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**ITEM 2.** 

(a) Name of Person Filing:

**Rainer M. Erdtmann** 

**Point Sur Investors, LLC** 

**Point Sur Investors Fund I, L.P.** 

(b) Address of Principal Business Office, or if None, Residence:

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Rainer M. Erdtmann** | **c/o Biomea Fusion, Inc.**<br> **900 Middlefield Road, 4th Floor**<br> **Redwood City, CA 94063** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Point Sur Investors, LLC** | **1073 Arlington Blvd.**<br> **El Cerrito, CA 94530** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Point Sur Investors Fund I, L.P.** | **1073 Arlington Blvd.**<br> **El Cerrito, CA 94530** |

---

(c) Citizenship:

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Rainer M. Erdtmann** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **United States of America** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Point Sur Investors, LLC** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Delaware** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Point Sur Investors Fund I, L.P.** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Delaware** |

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(d) Title of Class of Securities: **Common Stock**

(e) CUSIP Number: **09077A106**

**ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO SS.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)

(k) ☐ Group, in accordance with §240.13d-1(b)(1)(ii)(J).

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Rainer M. Erdtmann** | **Not applicable** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Point Sur Investors, LLC** | **Not applicable** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Point Sur Investors Fund I, L.P.** | **Not applicable** |

---

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**ITEM 4. OWNERSHIP.** 

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a) Amount beneficially owned:

**The information set forth in Row 9 of the cover tables to this Amendment No. 1 to the Schedule 13G ("Schedule 13G/A") is incorporated by reference with respect to each Reporting Person.** 

(b) Percent of class:

**The information set forth in Row 11 of the cover tables to this Schedule 13G/A is incorporated by reference with respect to each Reporting Person.** 

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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Sole power to vote or to direct the vote

**The information set forth in Row 5 of the cover tables to this Schedule 13G/A is incorporated by reference with respect to each Reporting Person.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) Shared power to vote or to direct the vote

**The information set forth in Row 6 of the cover tables to this Schedule 13G/A is incorporated by reference with respect to each Reporting Person.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) Sole power to dispose or to direct the disposition of

**The information set forth in Row 7 of the cover tables to this Schedule 13G/A is incorporated by reference with respect to each Reporting Person.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) Shared power to dispose or to direct the disposition of

**The information set forth in Row 8 of the cover tables to this Schedule 13G/A is incorporated by reference with respect to each Reporting Person.** 

**ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.** 

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 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.** 

**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.** 

**Not applicable**.

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**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 10, 2023

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| | |
|:---|:---|
|  **RAINER M. ERDTMANN** | **RAINER M. ERDTMANN** |
| By: | /s/ Rainer M. Erdtmann |

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| | |
|:---|:---|
|  **POINT SUR INVESTORS FUND, LLC** | **POINT SUR INVESTORS FUND, LLC** |
| By: | /s/ Rainer M. Erdtmann |
| Name: | Rainer M. Erdtmann |
| Title: | Authorized Signatory |

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| | |
|:---|:---|
|  **POINT SUR INVESTORS FUND I, L.P.** | **POINT SUR INVESTORS FUND I, L.P.** |
| By: | /s/ Rainer M. Erdtmann |
| Name: | Rainer M. Erdtmann |
| Title: | Authorized Signatory |

---