CytomX Therapeutics, Inc. - Common Stock, $0.00001 par value per share ("Common Stock") (CTMX)

Q: What does CUSIP 23284F105 represent in this 13F holders report?

CUSIP 23284F105 is the security identifier for CTMX - CytomX Therapeutics, Inc. - Common Stock, $0.00001 par value per share ("Common Stock") used to aggregate holder disclosures.

Q: How many institutions held CTMX - CytomX Therapeutics, Inc. - Common Stock, $0.00001 par value per share ("Common Stock") in Q3 2025?

102 institutional investors reported CTMX - CytomX Therapeutics, Inc. - Common Stock, $0.00001 par value per share ("Common Stock") for Q3 2025. Use the holders table for investor-level position and value details.

CUSIP: 23284F105

Q3 2025 13F Holders as of 30 Sep 2025

Security type / class: Equity / Common Stock, $0.00001 par value per share ("Common Stock")
Total 13F shares: 137,411,371
Total 13F value: $438,342,190
Share change: +4,106,260
Put/Call ratio: 17%
SEC-reported price per share: $3.19
Number of holders: 102
Value change: +$24,527,196
Number of buys: 60
Number of sells: 37
Shares outstanding: 217,079,600

Security key

23284F105

Report period

Q3 2025

Institutions

102

Top holders

CTMX full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2025 Previous quarter: Q2 2025 CytomX Therapeutics, Inc. SEC filings CytomX Therapeutics, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 23284F105

Newer quarter: Q4 2025 Previous quarter: Q2 2025

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

Ownership snapshot

Top reported holders of CTMX - CytomX Therapeutics, Inc. - Common Stock, $0.00001 par value per share ("Common Stock") (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BIOTECHNOLOGY VALUE FUND L P

Disclosed value leader

Venrock Adviser, LLC

Comparable rows

15/15

Latest evidence

03 Jul 2025

13D/G 13F Lead comparable stake: 3.5% 13D/G row: BIOTECHNOLOGY VALUE FUND L P Showing 1-6 of 15 holder rows.

Quick read

BIOTECHNOLOGY VALUE FUND L P leads the comparable SEC ownership view at 3.5%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BIOTECHNOLOGY VALUE FUND L P's linked filing trail.

Comparable ownership Top 5

BIOTECHNOLOGY VALUE FUND L P 3.5%

Seven Fleet Partners LP 0.2%

Venrock Adviser, LLC 6.4%

TANG CAPITAL MANAGEMENT LLC 5.1%

VANGUARD GROUP INC 4.3%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BIOTECHNOLOGY VALUE FUND L P	13D/G BVF PARTNERS L P/IL 13D/G	3.5%	$17,250,001 5,769,231 shares	-$17,250,001	03 Jul 2025
Seven Fleet Partners LP	13D/G 13D/G	0.2%	$267,784 377,161 shares	$0	13 May 2025
Venrock Adviser, LLC	13F Company 13F	6.4%	$31,711,632 13,969,882 shares	—	30 Jun 2025
TANG CAPITAL MANAGEMENT LLC	13F Company 13F	5.1%	$25,119,053 11,065,662 shares	—	30 Jun 2025
VANGUARD GROUP INC	13F Company 13F	4.3%	$21,292,133 9,379,794 shares	—	30 Jun 2025
FMR LLC	13F Company 13F	4.3%	$20,972,230 9,238,868 shares	—	30 Jun 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

102

137,411,371

Rows available

102

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders

Q3 2025 holders

102

Holder diff

Investor	Q2 2025 Shares	Q3 2025 Shares	Share Diff	Share Chg %	Q2 2025 value	Q3 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend