UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549

~~SECURITIES~~FORM ~~AND EXCHANGE COMMISSION~~10‑K

~~WASHINGTON,~~ANNUAL ~~D.C.~~REPORT ~~20549~~PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FORM 10-K

For the fiscal year ended:		Commission File Number:
December 31, 2015		001-32124

	STRUCTURED PRODUCTS CORP.,
	on behalf of

	TIERS Corporate Bond-Backed Certificates Trust IBM 1997-4

	(Exact name of registrant as specified in its charter)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended:		Commission File Number:
December 31, 2014		001-32124
	STRUCTURED PRODUCTS CORP.,
	on behalf of
	TIERS Corporate Bond-Backed Certificates Trust IBM 1997-4
	(Exact name of registrant as specified in its charter)

Delaware		13-3692801
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

	390 Greenwich Street
	New York, New York 10013
	(Address of principal executive offices) (zip code)

Registrant's telephone number including area code:

	212-723-4070

Securities registered pursuant to Section 12(b) of the Act:

None

Title of Each Class			Name of Each Exchange on Which Registered
TIERS Corporate Bond-Backed Certificates, Series IBM			New York Stock Exchange
1997-4, Amortizing Class Certificates
Securities registered pursuant to Section 12(g) of the Act:
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.
	Yes	¨☐	No	ý
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
	Yes	¨☐	No	ý

Indicate by check mark whether the Registrant has (1) filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to have filed such reports) and (2) has been subject to such filing requirements for the past 90 days.
	Yes	ý1	No		¨☐
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S‑T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
				Yes			ý	No	¨☐
				[Rule 405 of Regulation S-T is not applicable.]
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10‑K.
				ý					ý
				[Item 405 of Regulation S-K is not applicable.]
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer ¨
Large accelerated filer ☐
Accelerated filer ¨
Accelerated filer ☐
Non-accelerated filer ý (Do not check if a smaller reporting company)
Smaller reporting company ¨
Smaller reporting company ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).
						Yes	¨☐	No	ý

State the aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant’'s most recently completed second fiscal quarter. Not Applicable.

Not Applicable.

As of the date of this report, all of the common stock of the Registrant is held by Citigroup Global Markets Holdings Inc.

Documents Incorporated by Reference

The distribution reports to security holders filed on Form 8-K during the fiscal year in lieu of reports on Form 10-‑Q, which includes the reports filed on Form 8-K listed in Item 15(b) hereto.

1Pursuant to staff administrative positions established in the no-action letter Corporate Asset Backed Corporation (“"CABCO”") (available August 9, 1995), the Depositor is not required to respond to various items of Form 10-K. Such items are designated herein as “"Not Applicable”".

Introductory Note

Structured Products Corp. (the “"Depositor”") is the depositor under the Base Trust Agreement dated as of June 16, 1997, as supplemented by the Series IBM 1997-4 Supplement dated as of June 16, 1997, by and between the Depositor and U.S. Bank Trust National Association, as Trustee (the “"Trustee”"), providing for the issuance of the TIERS Corporate Bond-Backed Certificates, Series IBM 1997-4, Amortizing Class Certificates (the “"Certificates”") and is the depositor for the Certificates (the “"Registrant”"). The Certificates do not represent obligations of or interests in the Depositor or the Trustee.

The issuer(s) of the underlying securities, or guarantor thereof, or successor thereto, as applicable, is subject to the information reporting requirements of the Securities Exchange Act of 1934, as amended (the “"Exchange Act”"). For information on the issuer(s) of the underlying securities, or guarantor thereof, or successor thereto, as applicable, please see its periodic and current reports filed with the Securities and Exchange Commission (the “"Commission”"). Such reports and other information required to be filed pursuant to the Exchange Act, by the issuer(s) of the underlying securities, or guarantor thereof, or successor thereto, as applicable, may be inspected and copied at the public reference facilities maintained by the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549. The Commission also maintains a site on the World Wide Web at “"http://www.sec.gov”" at which users can view and download copies of reports, proxy and information statements and other information filed electronically through the Electronic Data Gathering, Analysis and Retrieval system, or “"EDGAR.”" Neither the Depositor nor the Trustee has participated in the preparation of such reporting documents, or made any due diligence investigation with respect to the information provided therein. Neither the Depositor nor the Trustee has verified the accuracy or completeness of such documents or reports. There can be no assurance that events affecting the issuer(s) of the underlying securities, or guarantor thereof, or successor thereto, as applicable, or the underlying securities have not occurred or have not yet been publicly disclosed that would affect the accuracy or completeness of the publicly available documents described above. The chart below lists each trust, the issuer(s) or guarantor, or successor thereto, of the related underlying security, and its respective Exchange Act file numbers, if applicable.

	Underlying Securities Issuer(s) or Guarantor, or successor thereto	Exchange Act File Number
	International Business Machines Corporation	001-02360

PART I

Item 1.	Business

	None.

Item 1A.	Risk Factors

	None.

Item 1B.	Unresolved Staff Comments

	None.

Item 2.	Properties

	None.

Item 3.	Legal Proceedings

	None.

Item 4.	Mine Safety Disclosures

	None.

PART II

Item 5.	Market for Registrant’'s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
	The Certificates representing investors’ interest in the Trust are represented by one or more physical Certificates registered in the name of Cede & Co., the nominee of The Depository Trust Company.
	The Certificates representing investors' interest in the Trust are represented by one or more physical Certificates registered in the name of Cede & Co., the nominee of The Depository Trust Company.
	The Certificates are listed on the New York Stock Exchange.
Item 6.	Selected Financial Data
	None.
Item 7.	Management’'s Discussion and Analysis of Financial Condition and Results of Operations
	Not Applicable.
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk
	None.
Item 8.	Financial Statements and Supplementary Data
	None.
Item 9.	Changes In and Disagreements With Accountants on Accounting and Financial Disclosure
	None.

Item 9A.	Controls and Procedures

	Not applicable.

Item 9B.	Other Information

	None.

PART III

Item 10.	Directors, Executive Officers and Corporate Governance

	None.

Item 11.	Executive Compensation

	Not Applicable.

Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

	Information required by Item 201(d) of Regulation S-X: Not applicable.
	Information required by Item 403 of Regulation S-X: None.

Item 13.	Certain Relationships and Related Transactions, and Director Independence

	None.

Item 14.	Principal Accounting Fees and Services

	Not Applicable.

PART IV

Item 15.		Exhibits, Financial Schedules and Reports on Form 8-K

(a)	The following documents are also filed as part of this Report:

	3.	Exhibits:

		31.1	Certification by Vice President and Finance Officer of the Registrant pursuant to 15 U.S.C. Section 7241, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

		99.1	Annual Compliance Report by Trustee.

		99.2	Report of Aston Bell & Associates.

(b)	The following reports on Form 8-K were filed during the period covered by this report and are hereby incorporated by reference:

	1.	Trustee’'s Distribution Statement for the June 21, ~~2014~~2015 Distribution Date filed on Form 8-K on June 38, ~~2014~~2015.
	2.	Trustee’'s Distribution Statement for the December 1, ~~2014~~2015 Distribution Date filed on Form 8-K on December 89, ~~2014~~2015.

(c)	See item 15(a)(3) above.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Structured Products Corp., as Depositor
Dated: March 26, 2015	By:	/s/ Stanley Louie
Dated: March 28, 2016	By:	/s/ Jee-Won Yang
	Name:	~~Stanley~~Jee-Won ~~Louie~~Yang
	Title:	Vice President, Finance Officer (senior officer in charge of securitization function of the Depositor)

EXHIBIT INDEX

Exhibit		Page
31.1	Certification by Vice President and Finance Officer of the Registrant pursuant to 15 U.S.C. Section 7241, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

99.1	Annual Compliance Report by Trustee pursuant to 15 U.S.C. Section 7241.

99.2	Report of Aston Bell & Associates.

Exhibit 31.1

CERTIFICATION

I, Jee-Won Yang, certify that:

1. I have reviewed this annual report on Form 10-K, and all reports on Form 8-K containing distribution or servicing reports filed in respect of periods included in the year covered by this annual report, of Structured Products Corp., on behalf of TIERS Corporate Bond-Backed Certificates Trust IBM 1997-4;

2. Based on my knowledge, the information in these reports, taken as a whole, does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading as of the last day of the period covered by this annual report;

3. Based on my knowledge, the distribution or servicing information required to be provided to the depositor by the trustee under the pooling and servicing, or similar, agreement for inclusion in these reports is included in these reports;

4. I am responsible for reviewing the activities performed by the depositor and the trustee under the pooling and servicing, or similar, agreement and based upon my knowledge and the annual compliance review required under that agreement, and except as disclosed in the reports, the depositor and trustee have each fulfilled its obligations under that agreement; and

5. The reports disclose all significant deficiencies relating to the compliance by the trustee and the depositor with the minimum servicing or similar standards based upon the report provided by an independent public accountant, after conducting a review in compliance with the Uniform Single Attestation Program for Mortgage Bankers or similar procedure, as set forth in the pooling and servicing, or similar, agreement, that is included in these reports.

In giving the certifications above, I have reasonably relied on information provided to me by the following unaffiliated parties: U.S. Bank Trust National Association.


	By:	/s/ Jee-Won Yang
	Name:	Jee-Won Yang
	Title:	Vice President, Finance Officer (senior officer in charge of securitization function of the Depositor)
	Date:	March 28, 2016

Exhibit 99.1

ANNUAL COMPLIANCE REPORT

The undersigned, being an officer of U.S. Bank Trust National Association, as trustee (the "Trustee"), with respect to TIERS Corporate Bond-Backed Certificates Trust IBM 1997-4, on whose behalf Structured Products Corp. has prepared this annual report on Form 10-K for the fiscal year ended December 31, 2015 (the "Annual Report"), certifies as follows:

1. The Trustee is the trustee under the trust agreement.

2. Based on my knowledge, for the periods included in the year covered by the Annual Report, the Trustee has fulfilled its obligations, including any servicing obligations, under the trust agreement.


	/s/ William H. Hall
	Name:	William H. Hall
	Title:	Vice President
	Date:	February 17, 2016

Exhibit 99.2

Independent Accountant's Report

Structured Products Corp., as Depositor

390 Greenwich Street

New York, New York 10013

U.S. Bank Trust National Association, as Trustee

Corporate Trust Department

100 Wall Street

New York, NY 10005

Re:

TIERS Corporate Bond-Backed Certificates, Trust IBM 1997-4 (the "Trust")

Ladies and Gentlemen:

We have examined management's assertions that the Depositor and the Trustee have complied, in all material respects, with the provisions of the Base Trust Agreement dated as of June 16, 1997, as supplemented by the TIERS Corporate Bond-Backed Certificates Supplement Trust IBM 1997-4, dated as of June 16, 1997 (together, the "Trust Agreement"), during the period covered by the annual report on Form 10-K filed by the Depositor on behalf of the Trust for the year ended December 31, 2015 (the "Annual Report"). Management is responsible for compliance with the Trust Agreement. Our responsibility is to express an opinion on management's assertions based on our examination.

Our examination was made in accordance with standards established by the American Institute of Certified Public Accountants and, accordingly, included examining, on a test basis, evidence about the Depositor's and the Trustee's compliance with the Trust Agreement and performing such other procedures as considered necessary in the circumstances. We believe that our examination provides a reasonable basis for our opinion.

In our opinion, the Depositor and the Trustee have complied, in all material respects, with the Trust Agreement during the period covered by the Annual Report and management's assertions with respect to such compliance are fairly stated, in all material respects, for the year ended December 31, 2015.

/s/ Aston Bell, CPA

New York, New York

March 18, 2016

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