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Filing Details

Accession Number:
0000899243-17-008731
Form Type:
4
Zero Holdings:
No
Publication Time:
2017-03-27 19:28:16
Reporting Period:
2017-03-23
Filing Date:
2017-03-27
Accepted Time:
2017-03-27 19:28:16
SEC Url:
Form 4 Filing
Issuer
Cik Name Symbol Sector (SIC) IRS No
1501989 Cytomx Therapeutics Inc. CTMX () 4
Insiders
Cik Name Reported Address Insider Title Director Officer Large Shareholder Other
1180428 J Mark Levin 29 Newbury Street, 3Rd Floor
Boston MA 02116
No No Yes No
1192595 I Robert Tepper 29 Newbury Street, 3Rd Floor
Boston MA 02116
No No Yes No
1192603 P Kevin Starr 29 Newbury Street, 3Rd Floor
Boston MA 02116
No No Yes No
1408591 Third Rock Ventures Lp 29 Newbury Street, 3Rd Floor
Boston MA 02116
No No Yes No
1578973 Trv Gp, Llc 29 Newbury Street, 3Rd Floor
Boston MA 02116
No No Yes No
1578976 Third Rock Ventures Gp, L.p. 29 Newbury Street, 3Rd Floor
Boston MA 02116
No No Yes No
Reported Non-Derivative Transactions
Sec. Name Acquisiton - Disposition Date Amount Price Remaning Holdings Equity Swap Involved Form Type Code Nature of Ownership Explanation
Common Stock Disposition 2017-03-23 1,000,000 $17.00 5,820,348 No 4 S Direct
Common Stock Disposition 2017-03-27 650,000 $18.00 5,170,348 No 4 S Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 S Direct
No 4 S Direct
Reported Non-Derivative Holdings
Sec. Name Remaning Holdings Nature of Ownership Explanation
Common Stock 59,776 Direct
Common Stock 59,776 Direct
Common Stock 59,777 Direct
Footnotes
  1. These shares are directly held by Third Rock Ventures, L.P. ("TRV"). The general partner of TRV is Third Rock Ventures GP, L.P. ("TRV GP"). The general partner of TRV GP is TRV GP, LLC ("TRV GP LLC"). The individual managers of TRV GP LLC are Mark Levin ("Levin"), Kevin Starr ("Starr") and Dr. Robert Tepper ("Tepper"). Each of TRV GP, TRV GP LLC, Levin, Starr and Tepper disclaims beneficial ownership of the shares except to the extent of its or his pecuniary interest therein, if any, and this report shall not be deemed an admission that it or he is the beneficial owner of such shares.
  2. This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.00 to $18.45, inclusive. Each of the reporting persons undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2).
  3. These shares are directly held by Starr.
  4. These shares are directly held by Levin.
  5. These shares are directly held by Tepper.