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Quince Therapeutics, Inc. (QNCX) is the issuer in a Schedule 13G reporting beneficial ownership attributed to Foresite Capital Fund VI LP, Foresite Public & Crossover Opportunities Fund I, L.P., their respective management entities, and James B. Tananbaum. Tananbaum reported beneficial ownership of 652,039 shares, or 6.0%, comprising 489,029 shares held by Foresite Capital Fund VI LP and 163,010 held by Foresite Public & Crossover Opportunities Fund I, L.P. The shares are Series C Preferred Stock on an as-converted basis.
The two funds reported 489,029 shares (4.5%) and 163,010 shares (1.5%), respectively. Their general partners and Tananbaum, as managing member of the respective management entities, may be deemed to have sole voting and dispositive power over the shares. The ownership percentages are based on 10,841,470 common shares outstanding as of October 9, 2026.
Beneficial ownership652,039 shares (6.0%)James B. Tananbaum; Series C Preferred Stock on an as-converted basis
Beneficial ownership489,029 shares (4.5%)Foresite Capital Fund VI LP; Series C Preferred Stock on an as-converted basis
Beneficial ownership163,010 shares (1.5%)Foresite Public & Crossover Opportunities Fund I, L.P.; Series C Preferred Stock on an as-converted basis
Common shares outstanding10,841,470 sharesAs of October 9, 2026; basis for the reported ownership percentages
Key Terms
beneficially owned, as-converted basis, sole power to vote, sole power to dispose
4 terms
beneficially ownedfinancial
"Amount beneficially owned"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
as-converted basisfinancial
"shares of Series C Preferred Stock ... on an as-converted basis"
As-converted basis means counting securities that can become common stock—like convertible bonds or preferred shares—as if they already were common shares when calculating totals such as shares outstanding, ownership percentages, or per-share metrics. Investors use it to see the potential dilution and the “what-if” size of the shareholder base; it’s like imagining all restaurant coupons have been redeemed so you know how crowded the table could become and how slices of the pie would shrink.
sole power to votefinancial
"may be deemed to have sole power to vote these shares"
sole power to disposefinancial
"may be deemed to have sole power to dispose of these shares"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many QNCX shares does James B. Tananbaum report beneficially owning?
James B. Tananbaum reported beneficial ownership of 652,039 shares, or 6.0%, comprising 489,029 shares held by Foresite Capital Fund VI LP and 163,010 held by Foresite Public & Crossover Opportunities Fund I, L.P. The shares are Series C Preferred Stock on an as-converted basis.
Who has voting and dispositive power over the Foresite QNCX holdings?
Foresite Capital Fund VI LP directly owns 489,029 shares, and Foresite Public & Crossover Opportunities Fund I, L.P. directly owns 163,010 shares. Each fund’s general partner, and James B. Tananbaum as managing member of the respective management entity, may be deemed to have sole voting and dispositive power over those shares.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
IRulya Therapeutics Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
22053A305
(CUSIP Number)
10/06/2026
(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):
22053A305
1
Names of Reporting Persons
Foresite Capital Fund VI LP
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
489,029.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
489,029.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
489,029.00
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)
4.5 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: Note to Row 5: 489,029 shares*, except that Foresite Capital Management VI, LLC ("FCM VI"), the general partner of Foresite Capital Fund VI LP ("FCF VI"), may be deemed to have sole power to vote these shares, and James B. Tananbaum ("Tananbaum"), the managing member of FCM VI, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to row 5.
Note to Row 7: 489,029* shares, except that FCM VI, the general partner of FCF VI, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM VI, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 10,841,470 shares of Common Stock outstanding of IRulya Therapeutics Inc. (the "Issuer") as of October 9, 2026, as set forth in the Issuer's press release on October 9, 2026.
*Represents shares of Series C Preferred Stock owned by FCF VI on an as-converted basis.
SCHEDULE 13G
CUSIP Number(s):
22053A305
1
Names of Reporting Persons
Foresite Capital Management VI, 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
489,029.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
489,029.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
489,029.00
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)
4.5 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Row 5: 489,029 shares*, all of which are directly owned by FCF VI. FCM VI, the general partner of FCF VI, may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FCM VI, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to row 5.
Note to Row 7: 489,029 shares*, all of which are directly owned by FCF VI. FCM VI, the general partner of FCF VI, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FCM VI, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 10,841,470 shares of Common Stock outstanding of the Issuer as of October 9, 2026, as set forth in the Issuer's press release on October 9, 2026.
*Represents shares of Series C Preferred Stock owned by FCF VI on an as-converted basis.
SCHEDULE 13G
CUSIP Number(s):
22053A305
1
Names of Reporting Persons
Foresite Public & Crossover Opportunities Fund I, 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
163,010.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
163,010.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
163,010.00
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)
1.5 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: Note to Row 5: 163,010 shares*, except that Foresite Public & Crossover Opportunities Management I, LLC ("FPCOM"), the general partner of Foresite Public & Crossover Opportunities Fund I, L.P. ("FPCOF"), may be deemed to have sole power to vote these shares, and James B. Tananbaum ("Tananbaum"), the managing member of FPCOM, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to row 5.
Note to Row 7: 163,010 shares*, except that FPCOM, the general partner of FPCOF, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FPCOM, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 10,841,470 shares of Common Stock outstanding of the Issuer as of October 9, 2026, as set forth in the Issuer's press release on October 9, 2026.
*Represents shares of Series C Preferred Stock owned by FPCOF on an as-converted basis.
SCHEDULE 13G
CUSIP Number(s):
22053A305
1
Names of Reporting Persons
Foresite Public & Crossover Opportunities Management I, 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
163,010.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
163,010.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
163,010.00
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)
1.5 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Row 5: 163,010 shares*, all of which are directly owned by FPCOF. FPCOM, the general partner of FPCOF, may be deemed to have sole power to vote these shares, and Tananbaum, the managing member of FPCOM, may be deemed to have sole power to vote these shares.
Note to Row 6: See response to row 5.
Note to Row 7: 163,010 shares*, all of which are directly owned by FPCOF. FPCOM, the general partner of FPCOF, may be deemed to have sole power to dispose of these shares, and Tananbaum, the managing member of FPCOM, may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 10,841,470 shares of Common Stock outstanding of the Issuer as of October 9, 2026, as set forth in the Issuer's press release on October 9, 2026.
*Represents shares of Series C Preferred Stock owned by FPCOF on an as-converted basis.
SCHEDULE 13G
CUSIP Number(s):
22053A305
1
Names of Reporting Persons
James B. Tananbaum
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
652,039.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
652,039.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
652,039.00
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)
6.0 %
12
Type of Reporting Person (See Instructions)
IN
Comment for Type of Reporting Person: Note to Row 5: 652,039 shares*, of which 489,029 shares are directly owned by FCF VI and 163,010 shares are directly owned by FPCOF. Tananbaum is the managing member of FCM VI, which is the general partner of FCF VI, and the managing member of FPCOM, which is the general partner of FPCOF. Tananbaum may be deemed to have sole power to vote these shares.
Note to Row 6: See response to row 5.
Note to Row 7: 652,039 shares*, of which 489,029 shares are directly owned by FCF VI and 163,010 shares are directly owned by FPCOF. Tananbaum is the managing member of FCM VI, which is the general partner of FCF VI, and the managing member of FPCOM, which is the general partner of FPCOF. Tananbaum may be deemed to have sole power to dispose of these shares.
Note to Row 8: See response to row 7.
Note to Row 11: This percentage is calculated based upon 10,841,470 shares of Common Stock outstanding of the Issuer as of October 9, 2026, as set forth in the Issuer's press release on October 9, 2026.
*Represents shares of Series C Preferred Stock owned by FCF VI and FPCOF on an as-converted basis.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
IRulya Therapeutics Inc.
(b)
Address of issuer's principal executive offices:
611 Gateway Boulevard, Suite 273, South San Francisco, CA 94080
Item 2.
(a)
Name of person filing:
This Schedule is filed by FCF VI, FCM VI, FPCOF, FPCOM and Tananbaum. The foregoing entities and individuals are collectively referred to as the "Reporting Persons."
(b)
Address or principal business office or, if none, residence:
c/o Foresite Capital Management
9200 Sunset Boulevard, Suite PH1
West Hollywood, CA, 90069
(c)
Citizenship:
See Row 4 of cover page for each Reporting Person.
(d)
Title of class of securities:
Common Stock
(e)
CUSIP Number(s):
22053A305
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:
See Row 9 of cover page for each Reporting Person.
(b)
Percent of class:
See Row 11 of cover page for each Reporting Person.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
See Row 5 of cover page for each Reporting Person.
(ii) Shared power to vote or to direct the vote:
See Row 6 of cover page for each Reporting Person.
(iii) Sole power to dispose or to direct the disposition of:
See Row 7 of cover page for each Reporting Person.
(iv) Shared power to dispose or to direct the disposition of:
See Row 8 of cover page for each Reporting Person.
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.
Under certain circumstances set forth in the limited partnership agreement of FCF VI, the limited liability company agreement of FCM VI, the limited partnership agreement of FPCOF, and the limited liability company agreement of FPCOM, the partners or members, as the case may be, of each of such entities may be deemed to have the right to receive dividends from, or the proceeds from the sale of, shares of the Issuer directly or indirectly owned by each such entity of which they are a partner or member.
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.
Foresite Capital Fund VI LP
Signature:
/s/ James B. Tananbaum
Name/Title:
James B. Tananbaum, Managing Member of the General Partner
Date:
10/14/2026
Foresite Capital Management VI, LLC
Signature:
/s/ James B. Tananbaum
Name/Title:
James B. Tananbaum, Managing Member
Date:
10/14/2026
Foresite Public & Crossover Opportunities Fund I, L.P.
Signature:
/s/ James B. Tananbaum
Name/Title:
James B. Tananbaum, Managing Member of the General Partner
Date:
10/14/2026
Foresite Public & Crossover Opportunities Management I, LLC
Signature:
/s/ James B. Tananbaum
Name/Title:
James B. Tananbaum, Managing Member
Date:
10/14/2026
James B. Tananbaum
Signature:
/s/ James B. Tananbaum
Name/Title:
James B. Tananbaum
Date:
10/14/2026
Exhibit Information
Exhibit A
Agreement of Joint Filing
The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of the Issuer shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13G.
Date: October 14, 2026
FORESITE CAPITAL FUND VI LP
By: FORESITE CAPITAL MANAGEMENT VI, LLC
Its: General Partner
By: /s/ James B. Tananbaum
Name: James B. Tananbaum
Title: Managing Member
FORESITE CAPITAL MANAGEMENT VI, LLC
By: /s/ James B. Tananbaum
Name: James B. Tananbaum
Title: Managing Member
FORESITE PUBLIC & CROSSOVER OPPORTUNITIES FUND I, L.P.
By: FORESITE PUBLIC & CROSSOVER OPPORTUNITIES MANAGEMENT I, LLC
Its: General Partner
By: /s/ James B. Tananbaum
Name: James B. Tananbaum
Title: Managing Member
FORESITE PUBLIC & CROSSOVER OPPORTUNITIES MANAGEMENT I, LLC
By: /s/ James B. Tananbaum
Name: James B. Tananbaum
Title: Managing Member
JAMES B. TANANBAUM
By: /s/ James B. Tananbaum
