SC 13G

NAME OF REPORTING PERSONS

InterWest Partners X, LP (“IWP X”)

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) ☐ (b) ☐

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

California

SC 13G 1 d313518dsc13g.htm SC 13G SC 13G


OMB APPROVAL
OMB Number:		3235-0145
Expires:	February 28, 2010
Estimated average burden
hours per response		10.4

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(AMENDMENT NO. )*

Sera Prognostics, Inc.

(Name of Issuer)

Class A Common Stock

(Title of Class of Securities)

81749D107

(CUSIP Number)

December 31, 2021

(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)

*	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).


Cusip No. 81749D107		13G		Page 2 of 9 Pages

(1)	The shares are owned by IWP X and include 126,258 shares of Class A Common Stock issuable pursuant to Class A common stock purchase warrants.

(2)	Based upon 29,293,831 and 1,405,259 shares of the Issuer’s Class A and B Common Stock outstanding as of November 5, 2021, as reported in the Issuer’s Form 10-Q filed with the Securities and Exchange Commission (the “SEC”) on November 9, 2021.


Cusip No. 81749D107		13G		Page 3 of 9 Pages

(1)	The shares are owned by IWP X and include 126,258 shares of Class A Common Stock issuable pursuant to Class A common stock purchase warrants.

(2)	Based upon 29,293,831 and 1,405,259 shares of the Issuer’s Class A and B Common Stock outstanding as of November 5, 2021, as reported in the Issuer’s Form 10-Q filed with the Securities and Exchange Commission (the “SEC”) on November 9, 2021.


Cusip No. 81749D107		13G		Page 4 of 9 Pages

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Keval Desai that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose.


Cusip No. 81749D107		13G		Page 5 of 9 Pages

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Gilbert H. Kliman that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose.


Cusip No. 81749D107		13G		Page 6 of 9 Pages


1	NAME OF REPORTING PERSONS Khaled A. Nasr (a Venture Member of InterWest Management Partners X, LLC)
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ☐ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY REPORTING PERSON WITH		5	SOLE VOTING POWER 0
		6	SHARED VOTING POWER 2,542,499
		7	SOLE DISPOSITIVE POWER 0
		8	SHARED DISPOSITIVE POWER 2,542,499
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,542,499
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES: ☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 8.6%
12	TYPE OF REPORTING PERSON IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Khaled A. Nasr that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose.


Cusip No. 81749D107		13G		Page 7 of 9 Pages

ITEM 1.

(a)

NAME OF ISSUER: Sera Prognostics, Inc.

(b)

ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICE:

2749 E Parleys Way #200, Salt Lake City, UT 84109

ITEM 2.

(a)

NAME OF PERSON(S) FILING:

InterWest Partners X, LP (“IWP X”)

InterWest Management Partners X, LLC (“IMP X”)

Keval Desai (“Desai”)

Gilbert H. Kliman (“Kliman”)

Khaled A. Nasr (“Nasr”)

(b)

ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

467 First Street, Suite 201, Los Altos, CA 94022

(c)

CITIZENSHIP/PLACE OF ORGANIZATION:

IWP X: California

IMP X: California

Desai: United States

Kliman: United States

Nasr: United States

(d)

TITLE OF CLASS OF SECURITIES: Class A Common Stock

(e)

CUSIP NUMBER: 81749D107

ITEM 3. NOT APPLICABLE.


Cusip No. 81749D107		13G		Page 8 of 9 Pages

ITEM 4. OWNERSHIP.


	IWP X			IMP X (1)			Desai (2)			Kliman (2)			Nasr (2)
Beneficial Ownership		2,542,499 (3	)		2,542,499 (3	)		2,542,499 (3	)		2,542,499 (3	)		2,542,499 (3	)
Percentage of Class		8.6% (4)			8.6% (4)			8.6% (4)			8.6% (4)			8.6% (4)
Sole Voting Power		2,542,499			2,542,499			0			0			0
Shared Voting Power		0			0			2,542,499			2,542,499			2,542,499
Sole Dispositive Power		2,542,499			2,542,499			0			0			0
Shared Dispositive Power		0			0			2,542,499			2,542,499			2,542,499

(1)	IMP X is the general partner of IWP X.

(2)	Kliman is a Managing Director of IMP X. Desai and Nasr are Venture Members of IMP X. The Managing Directors and Venture Members of IMP X share voting and investment control over shares held by IWP X.

(3)	The shares are owned by IWP X and include 126,258 shares of Class A Common Stock issuable pursuant to Class A common stock purchase warrants.

(4)	Based upon 29,293,831 and 1,405,259 shares of the Issuer’s Class A and B Common Stock outstanding as of November 5, 2021, as reported in the Issuer’s Form 10-Q filed with the Securities and Exchange Commission (the “SEC”) on November 9, 2021.

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.

Under certain circumstances set forth in the limited liability company operating agreement of IMP X, the members of such limited liability company have the right to receive dividends from, or the proceeds from the sale of, the common stock of Issuer beneficially owned by such limited liability company.

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.

No reporting person is a member of a group as defined in section 240.13d-1(b)(1)(iii)(H) of the Act.

ITEM 9. NOTICE OF DISSOLUTION OF THE GROUP.

Not applicable.

ITEM 10. CERTIFICATION

Not applicable.


Cusip No. 81749D107		13G		Page 9 of 9 Pages

EXHIBITS

Joint Filing Statement attached as Exhibit A.

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, 2022


INTERWEST PARTNERS X, LP
By:		InterWest Management Partners X, LLC, its General Partner

By:		/s/ Karen A. Wilson, Power of Attorney
		Attorney-in-Fact

INTERWEST MANAGEMENT PARTNERS X, LLC

By:		Karen A. Wilson, Power of Attorney
		Attorney-in-Fact

By:		/s/ Keval Desai by Karen A. Wilson, Power of Attorney
Name:		Keval Desai

By:		/s/ Gilbert H. Kliman by Karen A. Wilson, Power of Attorney
Name:		Gilbert H. Kliman

By:		/s/ Khaled A. Nasr
Name:		Khaled A. Nasr

SEC Form SC 13G filed by Sera Prognostics Inc.