FORM 15 [Adopted in Release No. 34-20784 (Paragraph 83,508), March 22, 1984, effective March 30, 1984, 49 F.R., 12688.] U. S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 ------- Certification and Notice of Termination of Registration under Section 12(g) of the Securities Exchange Act of 1934 or Suspension of Duty to File Reports Under Sections 13 and 15 (d) of the Securities Exchange Act of 1934. Commission File Number: 0-18076 PAINEWEBBER INSURED MORTGAGE PARTNERS 1-B, L.P. ----------------------------------------------- (Exact name of registrant as specified in its charter) 265 Franklin Street, Boston, Massachusetts 02110 (617) 439-8118 - ------------------------------------------------------------------------------ (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) Units of Limited Partnership Interest ------------------------------------- (Title of each class of securities covered by this Form) Titles of all other classes of securities for which a duty to file reports under section 13 (a) or 15 (d) remains: None Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports: Rule 12g-4(a) (1) (i) [ x ] Rule 12h-3(b) (1) (ii) [ ] Rule 12g-4(a) (1) (ii) [ ] Rule 12h-3(b) (2) (i) [ ] Rule 12g-4(a) (2) (i) [ ] Rule 12h-3(b) (2) (ii) [ ] Rule 12g-4(a) (2) (ii) [ ] Rule 15d-6 [ ] Rule 12h-3(b) (1) (i) [ x ] Approximate number of holders of record as of the certification or notice date: None Pursuant to the requirements of the Securities Exchange Act of 1934 PaineWebber Insured Mortgage Partners 1-B, L.P. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person. DATE: August 25, 2000 PAINEWEBBER INSURED MORTGAGE PARTNERS 1-B, L.P. By: FIRST INSURED MORTGAGE PARTNERS, INC. ------------------------------------- Managing General Partner By: /s/ Walter V. Arnold -------------------- Name: Walter V. Arnold Title: Senior Vice President and Chief Financial Officer