CytomX Therapeutics ownership disclosure: Seven Fleet Master Fund and related reporting persons report beneficial ownership of 1,085,398 shares of Common Stock, representing 0.5% of the class.
The filing states the 217,702,919 shares outstanding as of April 30, 2026 were reported in the issuer's Form 10-Q filed May 7, 2026. The statement also notes that Longitude may be deemed to beneficially own 15,288,461 shares (7.0%) based on information provided to the reporting persons; the reporting persons disclaim group membership.
Positive
None.
Negative
None.
Insights
Disclosure shows a small passive stake by Seven Fleet and a larger reported interest tied to Longitude.
The schedule reports 1,085,398 shares for Seven Fleet entities, equal to 0.5% of the issuer's 217,702,919 shares outstanding as of April 30, 2026. The filing is a Section 13G/A ownership update and reflects beneficial‑ownership reporting rather than active trading.
Impact depends on holder decisions; subsequent filings would show any change. Timing and cash‑flow treatment are not stated in the provided excerpt.
Filing emphasizes attribution through investment-management entities and a disclaimer of group membership.
The cover notes that Seven Fleet Management, Seven Fleet Management GP and Dr. Brian Liu may be deemed to beneficially own shares held of record by Seven Fleet Master Fund. The Schedule also references potential group ties to Longitude, which the reporting persons disclaim.
Investors should note the filing is informational; any change in voting or disposition power would require future disclosure.
Key Figures
Seven Fleet shares beneficially owned:1,085,398 sharesPercent of class (Seven Fleet):0.5%Shares outstanding:217,702,919 shares+2 more
5 metrics
Seven Fleet shares beneficially owned1,085,398 sharesReported in Schedule 13G/A amendment
Percent of class (Seven Fleet)0.5%Based on 217,702,919 shares outstanding as reported
Shares outstanding217,702,919 sharesOutstanding as of <date>April 30, 2026</date> per issuer Form 10-Q
Longitude deemed beneficial ownership15,288,461 sharesReported as potentially beneficially owned by Longitude per information provided
Percent of class (Longitude)7.0%Based on issuer's reported outstanding shares in Form 10-Q
Key Terms
beneficially own, Schedule 13G/A, Section 13(d)(3), shared dispositive power
4 terms
beneficially ownregulatory
"Seven Fleet Master Fund is the record owner of 1,085,398 shares of Common Stock"
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
Schedule 13G/Aregulatory
"This joint statement on is being filed by Seven Fleet Master Fund LP"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
Section 13(d)(3)regulatory
"may be deemed to be members of a group within the meaning of Section 13(d)(3) of the Securities Exchange Act"
shared dispositive powerfinancial
"Shared Dispositive Power 1,085,398.00"
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 2)
CytomX Therapeutics, Inc.
(Name of Issuer)
Common Stock, $0.00001 par value per share ("Common Stock")
(Title of Class of Securities)
23284F105
(CUSIP Number)
03/31/2026
(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):
23284F105
1
Names of Reporting Persons
Seven Fleet 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
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,085,398.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,085,398.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,085,398.00
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)
0.5 %
12
Type of Reporting Person (See Instructions)
PN
Comment for Type of Reporting Person: Note to Rows 6, 8 and 9: All such shares are held of record by Seven Fleet Master Fund (as defined in Item 2(a) below). Seven Fleet Management, as the investment manager of Seven Fleet Master Fund, may be deemed to beneficially own the shares of Common Stock held directly by Seven Fleet Master Fund. Seven Fleet Management GP, as the general partner of Seven Fleet Management, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management. The Reporting Individual, as the managing member of Seven Fleet Management GP, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management GP.
Note to Row 11: Based on 217,702,919 shares of Common Stock (as defined in Item 2(d) below) outstanding as of April 30, 2026 reported by the Issuer (as defined in Item 1(a) below) in its Quarterly Report on Form 10-Q dated and filed with the Securities and Exchange Commission (the "Commission") May 7, 2026 (the "Quarterly Report").
SCHEDULE 13G
CUSIP Number(s):
23284F105
1
Names of Reporting Persons
Seven Fleet Capital Management 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
0.00
6
Shared Voting Power
1,085,398.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,085,398.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,085,398.00
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)
0.5 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Rows 6, 8 and 9: All such shares are held of record by Seven Fleet Master Fund. Seven Fleet Management, as the investment manager of Seven Fleet Master Fund, may be deemed to beneficially own the shares of Common Stock held directly by Seven Fleet Master Fund. Seven Fleet Management GP, as the general partner of Seven Fleet Management, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management. The Reporting Individual, as the managing member of Seven Fleet Management GP, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management GP.
Note to Row 11: Based on 217,702,919 shares of Common Stock outstanding as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 7, 2026.
SCHEDULE 13G
CUSIP Number(s):
23284F105
1
Names of Reporting Persons
Seven Fleet Capital Management 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
1,085,398.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,085,398.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,085,398.00
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)
0.5 %
12
Type of Reporting Person (See Instructions)
OO
Comment for Type of Reporting Person: Note to Rows 6, 8 and 9: All such shares are held of record by Seven Fleet Master Fund. Seven Fleet Management, as the investment manager of Seven Fleet Master Fund, may be deemed to beneficially own the shares of Common Stock held directly by Seven Fleet Master Fund. Seven Fleet Management GP, as the general partner of Seven Fleet Management, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management. The Reporting Individual, as the managing member of Seven Fleet Management GP, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management GP.
Note to Row 11: Based on 217,702,919 shares of Common Stock outstanding as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 7, 2026.
SCHEDULE 13G
CUSIP Number(s):
23284F105
1
Names of Reporting Persons
Brian Liu
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
1,085,398.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,085,398.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,085,398.00
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)
0.5 %
12
Type of Reporting Person (See Instructions)
IN
Comment for Type of Reporting Person: Note to Rows 6, 8 and 9: All such shares are held of record by Seven Fleet Master Fund. Seven Fleet Management, as the investment manager of Seven Fleet Master Fund, may be deemed to beneficially own the shares of Common Stock held directly by Seven Fleet Master Fund. Seven Fleet Management GP, as the general partner of Seven Fleet Management, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management. The Reporting Individual, as the managing member of Seven Fleet Management GP, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management GP.
Note to Row 11: Based on 217,702,919 shares of Common Stock outstanding as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 7, 2026.
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
CytomX Therapeutics, Inc.
(b)
Address of issuer's principal executive offices:
151 Oyster Point Blvd., Suite 400, South San Francisco, CA 94080
Item 2.
(a)
Name of person filing:
This joint statement on Schedule 13G is being filed by Seven Fleet Master Fund LP ("Seven Fleet Master Fund"), Seven Fleet Capital Management LP ("Seven Fleet Management"), Seven Fleet Capital Management GP LLC ("Seven Fleet Management GP" and collectively, the "Reporting Entities") and Brian Liu (the "Reporting Individual"). The Reporting Entities and the Reporting Individual are collectively referred to as the "Reporting Persons."
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of each Reporting Person is 960 San Clemente Way, Mountain View CA 94043.
(c)
Citizenship:
Seven Fleet Master Fund is a limited partnership organized under the laws of the Cayman Islands. Seven Fleet Management is a limited partnership organized under the laws of the State of Delaware. Seven Fleet Management GP is a limited liability company organized under the laws of the State of Delaware. The Reporting Individual is a citizen of the United States of America.
(d)
Title of class of securities:
Common Stock, $0.00001 par value per share ("Common Stock")
(e)
CUSIP No.:
23284F105
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 the cover page for each Reporting Person.
Seven Fleet Master Fund is the record owner of 1,085,398 shares of Common Stock. Seven Fleet Management, as the investment manager of Seven Fleet Master Fund, may be deemed to beneficially own the shares of Common Stock held directly by Seven Fleet Master Fund. Seven Fleet Management GP, as the general partner of Seven Fleet Management, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management. The Reporting Individual, as the managing member of Seven Fleet Management GP, may be deemed to beneficially own the shares of Common Stock beneficially owned by Seven Fleet Management GP.
Seven Fleet Management and Longitude Capital Management Co. LLC (together with its affiliates, Longitude) have instituted policies and procedures that may affect the acquisition, holding and disposition of securities held by Seven Fleet Management and its affiliates. As a result of such policies and procedures, the Reporting Persons and Longitude may be deemed to be members of a group within the meaning of within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934 (the Exchange Act). As of the date hereof, based on information provided by or behalf of Longitude, Longitude may be deemed to be the beneficial owner of 15,288,461 shares of Common Stock, constituting 7.0% of the number of shares of Common Stock outstanding (based on 217,702,919 shares of Common Stock outstanding as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on May 7, 2026). Notwithstanding such policies and procedures, the Reporting Persons expressly disclaim such group membership and beneficial ownership over any Common Stock that they may be deemed to beneficially own by reason of such policies and procedures. This Schedule 13G shall not be deemed an admission that the Reporting Persons are members of a group for purposes of Section 13 of the Exchange Act or for any other purpose.
(b)
Percent of class:
See Row 11 of the cover page for each Reporting Person and the corresponding footnotes.*
* Except to the extent of his, hers, or its pecuniary interest therein, each Reporting Person disclaims beneficial ownership of such shares of Common Stock, except for the shares, if any, such Reporting Person holds of record.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Sole power to vote or to direct the vote
See Row 5 of the cover page for each Reporting Person and the corresponding footnotes.*
(ii) Shared power to vote or to direct the vote:
Shared power to vote or to direct the vote
See Row 6 of the cover page for each Reporting Person and the corresponding footnotes.*
(iii) Sole power to dispose or to direct the disposition of:
Sole power to dispose or to direct the disposition of
See Row 7 of the cover page for each Reporting Person and the corresponding footnotes.*
(iv) Shared power to dispose or to direct the disposition of:
Shared power to dispose or to direct the disposition of
See Row 8 of the cover page for each Reporting Person and the corresponding footnotes.*
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.
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.
See Exhibit 1 to the Schedule 13G filed by the Reporting Persons with the Commission on November 14, 2025.
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.
Seven Fleet Master Fund LP
Signature:
/s/ Dr. Brian Liu
Name/Title:
Dr. Brian Liu, Managing Member of Seven Fleet Capital Management LP, its Investment Mgr and Seven Fleet Capital Management GP, LLC, its Gen'l Ptr
Date:
05/15/2026
Seven Fleet Capital Management LP
Signature:
/s/ Dr. Brian Liu
Name/Title:
Dr. Brian Liu , Managing Member of Seven Fleet Capital Management GP, LLC, its General Partner
Seven Fleet reports beneficial ownership of 1,085,398 shares of Common Stock, representing 0.5% of the class based on the issuer's stated outstanding share count. This figure is recorded in the Schedule 13G/A filed as an amendment.
How many CTMX shares were outstanding for the percentage calculation?
The filing cites 217,702,919 shares outstanding as of April 30, 2026, reported in the issuer's Form 10-Q filed May 7, 2026. That outstanding share count is used to calculate the 0.5% stake reported for Seven Fleet.
Does the filing show a group affiliation with Longitude for CTMX holdings?
The Schedule states Longitude may be deemed to beneficially own 15,288,461 shares (7.0%) based on information provided; however, the Reporting Persons expressly disclaim group membership and beneficial ownership arising from such arrangements.
Who are the reporting persons named in the CTMX filing?
The filing is by Seven Fleet Master Fund LP, Seven Fleet Capital Management LP, Seven Fleet Capital Management GP LLC and Dr. Brian Liu (the Reporting Individual). The principal business address is listed as Mountain View, California.
Does the filing state who holds voting or dispositive power over the 1,085,398 CTMX shares?
The cover rows show 0 sole voting and dispositive power and 1,085,398 shared voting and dispositive power for the listed reporting persons, with explanatory footnotes tying record ownership to Seven Fleet Master Fund.
