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Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001193805-15-001688
Filing Date
2015-10-07
Accepted
2015-10-07 18:03:37
Documents
2
Period of Report
2015-10-07

Document Format Files

Seq Description Document Type Size
1 OWNERSHIP DOCUMENT e614173_3-cytomx.html 3  
1 OWNERSHIP DOCUMENT e614173_3-cytomx.xml 3 11127
2 OWNERSHIP DOCUMENT e614173_ex99.htm EX-99 24939
  Complete submission text file 0001193805-15-001688.txt   40412
Mailing Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017 2125511600
DEERFIELD MANAGEMENT CO (Reporting) CIK: 0001009258 (see all company filings)

State of Incorp.: DE
Type: 3 | Act: 34 | File No.: 001-37587 | Film No.: 151149759

Mailing Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017 2125511600
Deerfield Mgmt L.P. (Reporting) CIK: 0001010823 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-37587 | Film No.: 151149760

Mailing Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017
Business Address
Flynn James E (Reporting) CIK: 0001352546 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-37587 | Film No.: 151149761

Mailing Address 780 3RD AVENUE 37TH FLOOR NEW YORK NY 10017
Business Address 780 3RD AVENUE 37TH FLOOR NEW YORK NY 10017 212-551-1600
Deerfield Special Situations Fund, L.P. (Reporting) CIK: 0001354395 (see all company filings)

State of Incorp.: DE
Type: 3 | Act: 34 | File No.: 001-37587 | Film No.: 151149758

Mailing Address 650 GATEWAY BLVD. SUITE 125 SOUTH SAN FRANCISCO CA 94080
Business Address 650 GATEWAY BLVD. SUITE 125 SOUTH SAN FRANCISCO CA 94080 650.515.3185
CytomX Therapeutics, Inc. (Issuer) CIK: 0001501989 (see all company filings)

IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations

Mailing Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017 212-551-1600
Deerfield Private Design Fund III, L.P. (Reporting) CIK: 0001603333 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-37587 | Film No.: 151149756

Mailing Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017 212-551-1600
Deerfield Mgmt III, L.P. (Reporting) CIK: 0001610540 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1214
Type: 3 | Act: 34 | File No.: 001-37587 | Film No.: 151149757