Gossamer Bio, Inc. reporting persons filed a joint Schedule 13G disclosing shared beneficial ownership positions in the issuer's Common Stock. The filing shows 37,665,073 shares reported for DeepCurrents/related parties (representing 7.7%) and 27,646,139 shares attributed to DCIG Capital Master Fund (representing 5.7%). The filing cites June 5, 2026 as the reference date for 488,846,722 shares outstanding used to calculate percentages.
The statement clarifies record ownership: the Fund and a separately managed account are direct owners, DeepCurrents is the investment manager, DCIG GP is the general partner, and Kai Zheng is a managing member. Each Reporting Person disclaims beneficial ownership of shares held directly by the others.
Positive
None.
Negative
None.
Insights
Large passive/managerial holdings reported without control claims.
The filing lists 37,665,073 shares (reported as 7.7%) attributed across DeepCurrents-related entities and a separately managed account, and 27,646,139 shares (reported as 5.7%) for DCIG Capital Master Fund, using an outstanding share base of June 5, 2026.
These positions are presented as shared voting/dispositive power rather than sole control; subsequent trading activity by the holders will determine any investor-visible supply pressure. Future Form 13D/13G amendments or sales would clarify intent and activity.
Filing is a joint Schedule 13G with standard disclaimers and group statements.
The document identifies the Fund and Managed Account as record owners and states managerial and GP relationships for DeepCurrents, DCIG GP, and Kai Zheng. It includes the joint filing agreement as Exhibit 99.1.
All declarative qualifiers and disclaimers are present; legal significance hinges on whether holdings remain passive. Any change in intent should trigger an amendment under applicable rules.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Gossamer Bio, Inc.
(Name of Issuer)
Common Stock, $0.0001 par value per share
(Title of Class of Securities)
38341P102
(CUSIP Number)
06/04/2026
(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):
38341P102
1
Names of Reporting Persons
DeepCurrents Investment Group 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
0.00
6
Shared Voting Power
27,646,139.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
37,665,073.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
37,665,073.00
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)
7.7 %
12
Type of Reporting Person (See Instructions)
IA
Comment for Type of Reporting Person: (1) The figure in Item 6 represents shares of Common Stock, $0.0001 par value per share ("Common Stock") of Gossamer Bio, Inc. (the "Issuer") held by DCIG Capital Master Fund LP, a Delaware limited partnership (the "Fund").
(2) The figures in Items 8 and 9 include: (a) 27,646,139 shares of Common Stock held by the Fund, and (b) 10,018,934 shares of Common Stock held by a separately managed account. See Item 2 for more information.
(3) The figure in Item 11 included above is based upon 488,846,722 shares of Common Stock outstanding as of June 5, 2026, as disclosed on the Issuer's Schedule 14A filed with the U.S. Securities and Exchange Commission (the "SEC") on June 9, 2026.
SCHEDULE 13G
CUSIP Number(s):
38341P102
1
Names of Reporting Persons
DCIG GP 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
0.00
6
Shared Voting Power
27,646,139.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
27,646,139.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
27,646,139.00
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)
5.7 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: (1) The figures in Items 6, 8, and 9 represent shares of Common Stock held by the Fund.
(2) The figure in Item 11 included above is based upon 488,846,722 shares of Common Stock outstanding as of June 5, 2026, as disclosed on the Issuer's Schedule 14A filed with the SEC on June 9, 2026.
SCHEDULE 13G
CUSIP Number(s):
38341P102
1
Names of Reporting Persons
DCIG Capital Master Fund 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
CAYMAN ISLANDS
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
27,646,139.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
27,646,139.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
27,646,139.00
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)
5.7 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: The figure in Item 11 included above is based upon 488,846,722 shares of Common Stock outstanding as of June 5, 2026, as disclosed on the Issuer's Schedule 14A filed with the SEC on June 9, 2026.
SCHEDULE 13G
CUSIP Number(s):
38341P102
1
Names of Reporting Persons
Kai Zheng
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
0.00
6
Shared Voting Power
27,646,139.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
37,665,073.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
37,665,073.00
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)
7.7 %
12
Type of Reporting Person (See Instructions)
HC, IN
Comment for Type of Reporting Person: (1) The figure in Items 6 represents shares of Common Stock held by the Fund.
(2) The figures in Items 8 and 9 includes: (a) 27,646,139 shares of Common Stock held by the Fund, and (b) 10,018,934 shares of Common Stock held by a separately managed account. See Item 2 for more information.
(3) The figure in Item 11 included above is based upon 488,846,722 shares of Common Stock outstanding as of June 5, 2026, as disclosed on the Issuer's Schedule 14A filed with the SEC on June 9, 2026.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Gossamer Bio, Inc.
(b)
Address of issuer's principal executive offices:
3115 Merryfield Row Suite 120 San Diego, CA, 92121
Item 2.
(a)
Name of person filing:
This statement is filed jointly by and on behalf of each of DeepCurrents Investment Group, LLC, a Delaware limited liability company ("DeepCurrents"), DCIG Capital Master Fund LP, a Cayman Islands limited partnership (the "Fund"), DCIG GP LLC, a Delaware limited liability company ( "DeepCurrents GP"), and Kai Zheng (each, a "Reporting Person" and collectively, the "Reporting Persons"). DeepCurrents is the investment manager of, and may be deemed to indirectly beneficially own securities owned by, the Fund. DeepCurrents is also an investment adviser to a separately managed account of an advisory client (the "Managed Account") and may be deemed to beneficially own securities directly in the Managed Account, but DeepCurrents does not have any voting authority with respect to any securities in the Managed Account. DeepCurrents GP is the general partner of, and may be deemed to indirectly beneficially own securities owned by, the Fund. Mr. Zheng is the President and Managing Member of DeepCurrents and Managing Member of DeepCurrents GP, and may be deemed to indirectly beneficially own securities beneficially owned by DeepCurrents and DeepCurrents GP. The Fund and the Managed Account are the record and direct beneficial owners of the shares of Common Stock covered by this statement. Each Reporting Person disclaims beneficial ownership of the shares of Common Stock held directly by the other Reporting Persons.
Each Reporting Person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such Reporting Person is, for the purposes of Section 13(d) or 13(g) of the Act or any other purpose, the beneficial owner of any securities covered by this statement.
Each Reporting Person may be deemed to be a member of a group with respect to the Issuer or securities of the Issuer for the purposes of Section 13(d) or 13(g) of the Act. Each of the Reporting Persons declares that neither the filing of this statement nor anything herein shall be construed as an admission that such Reporting Person is, for the purposes of Section 13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act together with any other person) as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the Issuer or otherwise with respect to the Issuer or any securities of the Issuer or (ii) a member of any group with respect to the Issuer or any securities of the Issuer.
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of each of the Reporting Persons is 575 Fifth Avenue, 21st Floor, New York, NY 10017.
(c)
Citizenship:
See Item 4 on the cover page(s) hereto.
(d)
Title of class of securities:
Common Stock, $0.0001 par value per share
(e)
CUSIP Number(s):
38341P102
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 Item 9 on the cover pages(s) hereto.
(b)
Percent of class:
See Item 11 on the cover page(s) hereto.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
See Item 5 on the cover pages hereto.
(ii) Shared power to vote or to direct the vote:
See Item 6 on the cover pages hereto.
(iii) Sole power to dispose or to direct the disposition of:
See Item 7 on the cover pages hereto.
(iv) Shared power to dispose or to direct the disposition of:
See Item 8 on the cover pages hereto.
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.
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.
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.
