CytomX Therapeutics, Inc. (CTMX) - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-05-15
5:09 pm
Purchase
2026-03-3113GCYTOMX THERAPEUTICS INC
CTMX
Seven Fleet Capital Management LP1,085,398
0.500%
1,036,500increase
(+2119.72%)
Filing
History
2026-05-15
4:46 pm
Purchase
2026-03-3113GCYTOMX THERAPEUTICS INC
CTMX
Longitude Capital Partners V, LLC15,288,461
7.000%
3,750,000increase
(+32.50%)
Filing
History
2026-05-15
4:36 pm
Sale
2026-03-3113GCYTOMX THERAPEUTICS INC
CTMX
Venrock Healthcare Capital Partners III, L.P.9,982,124
4.600%
-5,579,376decrease
(-35.85%)
Filing
History
2026-05-15
4:01 pm
Purchase
2026-03-3113GCYTOMX THERAPEUTICS INC
CTMX
Kynam Capital Management, LP15,013,093
6.900%
6,047,016increase
(+67.44%)
Filing
History
2026-05-15
4:00 pm
Purchase
2026-03-3113GCYTOMX THERAPEUTICS INC
CTMX
Perceptive Advisors LLC10,098,824
4.600%
418,639increase
(+4.32%)
Filing
History
2026-04-16
4:10 pm
Purchase
2026-04-1513GCYTOMX THERAPEUTICS INC
CTMX
Point72 Asset Management, L.P.10,864,581
5.000%
6,796,006increase
(+167.04%)
Filing
History
2026-03-26
5:40 pm
Sale
2026-03-1313GCYTOMX THERAPEUTICS INC
CTMX
VANGUARD GROUP INC0
0.000%
-9,379,794decrease
(Position Closed)
Filing
History
2026-03-04
3:18 pm
Purchase
2025-12-3113GCYTOMX THERAPEUTICS INC
CTMX
Kynam Capital Management, LP8,966,077
5.290%
8,966,077increase
(New Position)
Filing
History
2026-02-17
6:23 pm
Sale
2025-12-3113GCYTOMX THERAPEUTICS INC
CTMX
ORBIMED ADVISORS LLC3,525,650
2.100%
-4,935,850decrease
(-58.33%)
Filing
History
2026-02-17
4:15 pm
Sale
2025-12-3113GCYTOMX THERAPEUTICS INC
CTMX
TANG CAPITAL MANAGEMENT, LLC0
0.000%
-11,065,662decrease
(Position Closed)
Filing
History
2026-02-05
1:20 pm
Purchase
2025-12-3113GCYTOMX THERAPEUTICS INC
CTMX
FMR LLC24,688,109
14.600%
4,168,142increase
(+20.31%)
Filing
History
2025-11-14
5:30 pm
Purchase
2025-09-3013GCYTOMX THERAPEUTICS INC
CTMX
Venrock Healthcare Capital Partners III, L.P.15,561,500
9.400%
2,569,000increase
(+19.77%)
Filing
History
2025-11-14
4:08 pm
Sale
2025-09-3013GCYTOMX THERAPEUTICS INC
CTMX
Point72 Asset Management, L.P.4,068,575
2.500%
-4,016,048decrease
(-49.68%)
Filing
History
2025-11-14
12:04 pm
Purchase
2025-09-3013GCYTOMX THERAPEUTICS INC
CTMX
Seven Fleet Capital Management LP48,898
0.020%
48,898increase
(New Position)
Filing
History
2025-11-07
11:13 am
Purchase
2025-10-3113GCYTOMX THERAPEUTICS INC
CTMX
FMR LLC20,519,967
12.400%
5,123,767increase
(+33.28%)
Filing
History
2025-11-05
11:30 am
Purchase
2025-09-3013GCYTOMX THERAPEUTICS INC
CTMX
FMR LLC15,396,200
9.300%
6,157,332increase
(+66.65%)
Filing
History
2025-08-21
4:00 pm
Purchase
2025-08-1413GCYTOMX THERAPEUTICS INC
CTMX
Perceptive Advisors LLC9,680,185
5.900%
7,103,142increase
(+275.63%)
Filing
History
2025-08-14
6:07 pm
Purchase
2025-06-3013GCYTOMX THERAPEUTICS INC
CTMX
ORBIMED ADVISORS LLC8,461,500
5.400%
8,461,500increase
(New Position)
Filing
History
2025-08-14
5:30 pm
Sale
2025-06-3013GCYTOMX THERAPEUTICS INC
CTMX
Point72 Asset Management, L.P.8,084,623
5.100%
-5,009,777decrease
(-38.26%)
Filing
History
2025-08-14
4:15 pm
Purchase
2025-06-3013GCYTOMX THERAPEUTICS INC
CTMX
TANG CAPITAL MANAGEMENT, LLC11,065,662
7.000%
4,347,837increase
(+64.72%)
Filing
History
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