PAGE 7 Exhibit 4.1 SECURITIES ISSUED UPON EXERCISE OF THIS OPTION HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 ("THE ACT"), AND ARE "RESTRICTED SECURITIES" AS THAT TERM IS DEFINED IN RULE 144 UNDER THE ACT. THE SECURITIES MAY NOT BE...Nonstatutory Stock Option Agreement • February 10th, 1998 • Rentech Inc /Co/ • Services-engineering services
PAGE 13 Exhibit 4.2 SECURITIES ISSUED UPON EXERCISE OF THIS OPTION HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 ("THE ACT"), AND ARE "RESTRICTED SECURITIES" AS THAT TERM IS DEFINED IN RULE 144 UNDER THE ACT. THE SECURITIES MAY NOT BE...Incentive Stock Option Agreement • February 10th, 1998 • Rentech Inc /Co/ • Services-engineering services
