Respirerx Pharmaceuticals Inc. (Exact Name of Registrant As Specified in Its Charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K [X] Annual Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2016 OR [ ] Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission file number 1-16467 RespireRx Pharmaceuticals Inc. (Exact name of registrant as specified in its charter) Delaware 33-0303583 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification Number) 126 Valley Road, Suite C Glen Rock, New Jersey 07452 (Address of principal executive offices, including zip code) (201) 444-4947 (Registrant’s telephone number, including area code) Securities registered under Section 12(b) of the Act: None Securities registered under Section 12(g) of the Act: Common Stock, $0.001 par value (Title of Class) Indicate by check mark whether the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES [ ] NO [X] Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. YES [ ] NO [X] Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days. YES [X] NO [ ] Indicate by check mark whether the registrant has submitted electronically and posted on its corporate web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). YES [X] NO [ ] 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 the 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 whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of “accelerated filer,” “large accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. Large accelerated filer [ ] Accelerated filer [ ] Non-accelerated filer [ ] Smaller reporting company [X] (Do not check if a smaller reporting company) Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2). YES [ ] NO [X] The aggregate market value of the voting stock held by non-affiliates as of June 30, 2016 was approximately $8,234,000 (based on the closing sale price of the common stock as reported by the OTC QB) on June 30, 2016. As of March 27, 2017, there were 2,169,045 shares of the registrant’s common stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE: NONE TABLE OF CONTENTS Page PART I Item 1. Business 2 Item 1A. Risk Factors 11 Item 1B. Unresolved Staff Comments 17 Item 2. Properties 17 Item 3. Legal Proceedings 17 Item 4. Mine Safety Disclosures 17 PART II Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities 18 Item 6. Selected Financial Data 18 Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations 18 Item 7A. Quantitative and Qualitative Disclosures About Market Risk 42 Item 8. Financial Statements and Supplementary Data 42 Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 42 Item 9A. Controls and Procedures 42 Item 9B. Other Information 44 PART III Item 10. Directors, Executive Officers and Corporate Governance 45 Item 11. Executive Compensation 50 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 56 Item 13. Certain Relationships and Related Transactions, and Director Independence 59 Item 14. Principal Accountant Fees and Services 60 PART IV Item 15. Exhibits and Financial Statement Schedules 61 Item 16. Form 10-K Summary 61 Consolidated Financial Statements F-1 Signatures S-1 In this Annual Report on Form 10-K, the terms “RespireRx,” the “Company,” “we,” “us” and “our” refer to RespireRx Pharmaceuticals Inc. (f/k/a Cortex Pharmaceuticals, Inc.), a Delaware corporation, and, unless the context indicates otherwise, its consolidated subsidiaries. INTRODUCTORY NOTE REGARDING FORWARD-LOOKING STATEMENTS This Annual Report on Form 10-K contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 (the “Exchange Act”) and the Company intends that such forward-looking statements be subject to the safe harbors created thereby. These forward-looking statements are contained principally in the sections entitled “Business,” “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” These might include statements regarding the Company’s future plans, targets, estimates, assumptions, financial position, business strategy and other plans and objectives for future operations, and assumptions and predictions about research and development efforts, including, but not limited to, preclinical and clinical research design, execution, timing, costs and results, future product demand, supply, manufacturing, costs, marketing and pricing factors are all forward-looking statements. In some cases, forward-looking statements may be identified by words including “anticipates,” “believes,” “intends,” “estimates,” “expects,” “plans,” “contemplates,” “targets,” “continues,” “budgets,” “may,” and similar expressions include, but are not limited to, statements regarding (i) future research plans, expenditures and results, (ii) potential collaborative arrangements, (iii) the potential utility of the Company’s proposed products, and (iv) the need for, and availability of, additional financing. The forward-looking statements included herein are based on current expectations that involve a number of risks and uncertainties. These forward-looking statements are based on assumptions regarding the Company’s business and technology, which involve judgments with respect to, among other things, future scientific, economic and competitive conditions, and future business decisions, all of which are difficult or impossible to predict accurately and many of which are beyond the Company’s control. Although the Company believes that the assumptions underlying the forward-looking statements are reasonable, actual results may differ materially from those set forth in the forward-looking statements. In light of the significant uncertainties inherent in the forward-looking information included herein, the inclusion of such information should not be regarded as a representation by the Company or any other person that the Company’s objectives or plans will be achieved. For more information about the risks and uncertainties the Company faces, see “Item 1A. Risk Factors” of this Annual Report on Form 10-K. Forward- looking statements speak only as of the date they are made. The Company does not undertake and specifically declines any obligation to update any forward- looking statements or to publicly announce the results of any revisions to any statements to reflect new information or future events or developments. 1 PART I Item 1. Business Since its formation in 1987, the Company has engaged in the discovery, development and commercialization of innovative pharmaceuticals for the treatment of neurological and psychiatric disorders. In 2011, however, we conducted a re-evaluation of our strategic focus and determined that clinical development in the area of respiratory disorders, particularly sleep apneas and respiratory depression produced by drugs and neural damage, provided the most cost-effective opportunities for potential rapid development and commercialization of our compounds. As a result of our scientific discoveries and the acquisition of strategic, exclusive license agreements, we believe we are now a leader in the discovery and development of innovative pharmaceuticals for the treatment of respiratory disorders. Saying that there exists an unmet need for new drug treatments for breathing disorders is an understatement. According to a study commissioned by the American Academy of Sleep Medicine, published in August 2016 (“AASM Commissioned Study”), there are approximately 29.4 million adults with obstructive sleep apnea, of which 5.9 million are diagnosed. Sleep apnea places a considerable burden on society and the health care system because of its association with co- morbidities and adverse events ranging from loss of productivity to increased risk of cardiopulmonary illness and related death. According to the AASM Commissioned Study, the estimated overall cost of obstructive sleep apnea in the United States in 2015 was $162 billion, of which $12.4 billion relates to the diagnosed/treated population and the balance to the undiagnosed population. No drugs currently are approved for the treatment of sleep apnea. Even in patients without sleep apneas, the use of drugs such as propofol, used as an anesthetic during surgery, and opioid analgesics such as morphine

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