Filed Pursuant to Rule 424(b)(3)
Registration No. 333-196302

AMERICAN REALTY CAPITAL HEALTHCARE TRUST III, INC.

SUPPLEMENT NO. 6, DATED DECEMBER 18, 2014,
TO THE PROSPECTUS, DATED AUGUST 20, 2014

This prospectus supplement, or this Supplement No. 6, is part of the prospectus of American Realty Capital Healthcare Trust III, Inc., or the Company, dated August 20, 2014, or the Prospectus, as supplemented by Supplement No. 1, dated September 23, 2014, or Supplement No. 1, Supplement No. 2, dated October 20, 2014, or Supplement No. 2, Supplement No. 3, dated October 22, 2014, or Supplement No. 3, and Supplement No. 4, dated November 6, 2014, or Supplement No. 4, and Supplement No. 5, dated November 21, 2014, or Supplement No. 5. This Supplement No. 6 supplements, modifies or supersedes certain information contained in the Prospectus and Supplement Nos. 1 through 5 and should be read in conjunction with the Prospectus and Supplement Nos. 1 through 5. This Supplement No. 6 will be delivered with the Prospectus and Supplement Nos. 1 through 5. Unless the context suggests otherwise, the terms “we,” “us” and “our” used herein refer to the Company, together with its consolidated subsidiaries.

The purposes of this Supplement No. 6 are to, among other things:

• include disclosure relating to the engagement of Deloitte & Touche, LLP to provide internal audit services to us;

• update certain investor suitability standards;

• update our prior performance information;

• replace Appendix C-1 — American Realty Capital Healthcare Trust III, Inc. — Subscription Agreement; and

• replace Appendix C-2 — Multi-Offering Subscription Agreement.

OPERATING INFORMATION

Engagement of Deloitte & Touche, LLP

On December 11, 2014, AR Capital, LLC, the parent of our sponsor, announced that it will engage Deloitte & Touche, LLP, or Deloitte, to provide outsourced internal audit services on behalf of the publicly registered, nontraded companies that AR Capital, LLC directly or indirectly sponsors, including us. Pursuant to the engagement, Deloitte will work with our management to develop an annual risk-based internal audit work plan and budget which will be presented to our audit committee for approval, provide our audit committee with a quarterly update on its work and formally report the results of its work to our audit committee.

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PROSPECTUS UPDATES

Investor Suitability Standards

The disclosure under the section entitled “Investor Suitability Standards — Nebraska” as added by Supplement 5 is hereby replaced with the following.

“Nebraska

• Nebraska investors must have either (a) a minimum net worth of at least $70,000 and a minimum annual gross income of not less than $100,000, or (b) a minimum net worth of $350,000. A Nebraska investor’s investment in us and in other non-publicly traded real estate investment trusts and other non-publicly traded direct participation programs (including oil and gas programs, equipment leasing programs, business development companies (BDCs) and commodity pools) may not exceed ten percent (10%) of his or her net worth. An investment by a Nebraska investor that is an accredited investor within the meaning of the Federal securities laws is not subject to the foregoing limitations.”

The disclosure under the section entitled “Investor Suitability Standards — Tennessee” on page iii of the Prospectus is hereby replaced with the following disclosure.

“Tennessee

• A Tennessee resident’s investment in us must not exceed 10% of his or her liquid net worth (exclusive of home, home furnishings and automobile). In addition to: either (i) having a net worth (excluding home, home furnishings, and automobiles), of at least $70,000 and a gross income of at least $70,000; or (ii) having a net worth (excluding home, home furnishings, and automobiles) of at least $250,000, a Tennessee resident’s maximum investment in us shall not exceed 10% of his or her liquid net worth (excluding home, home furnishings, and automobiles).”

Management

The ninth sentence of Mr. Schorsch’s biography as added by Supplement No. 3 is hereby replaced with the following disclosure.

“Mr. Schorsch also served as the chairman of ARCP since its formation in December 2010 until December 2014, and as the chief executive officer of ARCP since its formation in December 2010 until October 2014.”

Prior Performance Summary

The following disclosure hereby replaces in its entirety the disclosure under the sub-heading “— Programs of Our Sponsor” appearing prior to the sub-heading “Liquidity of Prior Programs” which remains unchanged, as included in Supplement Nos. 3 and 4.

“Programs of Our Sponsor

American Realty Capital Trust, Inc.

American Realty Capital Trust, Inc., or ARCT, incorporated on August 17, 2007, was a Maryland corporation that qualified as a REIT. ARCT was formed to acquire a diversified portfolio of commercial real estate, primarily freestanding single-tenant properties net leased to credit worthy tenants on a long-term basis. In January 2008, ARCT commenced an initial public offering on a “best efforts” basis to sell up to 150.0 million shares of common stock, excluding 25.0 million shares issuable pursuant to a distribution reinvestment plan, offered at a price of $10.00 per share, subject to certain volume and other discounts. In March 2008, ARCT commenced real estate operations. ARCT’s initial public offering closed in July 2011, having raised $1.7 billion in gross proceeds from the sale of 179.4 million shares of common stock and incurred, cumulatively to that date, $198.0 million in offering costs, commissions and dealer manager fees for the sale of its common stock. ARCT operated as a non-traded REIT through February 29, 2012. Effective as of March 1, 2012, ARCT internalized the management services previously provided by American Realty Capital Advisors, LLC and its affiliates, as a result of which ARCT became a self-administered REIT managed

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full-time by its own management team, or the Internalization. Concurrent with the Internalization, ARCT listed its common stock on The NASDAQ Global Select Market under the symbol “ARCT,” or the Listing. In connection with the Listing, ARCT offered to purchase up to $220.0 million in shares of common stock from its stockholders, pursuant to a modified “Dutch Auction” cash tender offer, or the Tender Offer. As a result of the Tender Offer, in April 2012, ARCT had purchased 21.0 million shares of its common stock at a purchase price of $10.50 per share, for an aggregate cost of $220.0 million, excluding fees and expenses relating to the Tender Offer. On September 6, 2012, ARCT entered into an Agreement and Plan of Merger with Realty Income Corporation, a Maryland corporation and its subsidiary, which was subsequently amended on January 6, 2013. The merger was approved by both companies’ boards of directors and was subsequently approved by both companies’ stockholders on January 16, 2013. The merger closed on January 22, 2013, pursuant to which ARCT merged with and into a subsidiary of Realty Income Corporation and trading of ARCT’s shares was suspended at market close on that date. As of December 31, 2012, ARCT had total real estate investments, at cost, of $2.2 billion, comprised of 515 properties.

New York REIT, Inc.

New York REIT, Inc., or NYRT, a Maryland corporation, is the second publicly offered REIT sponsored by American Realty Capital. NYRT was incorporated on October 6, 2009 and qualified as a REIT beginning with the taxable year ended December 31, 2010. On November 12, 2009, NYRT filed its initial registration statement with the SEC, which became effective on September 2, 2010. NYRT had received aggregate gross offering proceeds of $17.0 million from the sale of 2.0 million shares from a private offering to “accredited investors” (as defined in Regulation D as promulgated under the Securities Act). On December 15, 2011, NYRT exercised its option to convert all its outstanding preferred shares into 2.0 million shares of common stock on a one-to-one basis. As of April 14, 2014, the day prior to NYRT’s listing on the New York Stock Exchange (“NYSE”), NYRT had received aggregate gross proceeds of $1.7 billion which includes the sale of 169.8 million shares of common stock in its public offering, $17.0 million from its private offering and $41.5 million from its distribution reinvestment plan. On April 15, 2014, NYRT listed its common stock on the NYSE under the symbol “NYRT,” or the NYRT Listing. In connection with the NYRT Listing, NYRT commenced an offer to purchase up to 23,255,814 shares of its common stock at a price equal to $10.75 per share or an aggregate of $250.0 million in shares of common stock from its stockholders. This offer closed on May 12, 2014 and NYRT purchased 14.2 million shares of its common stock at a purchase price of $10.75 per share, for an aggregate cost of $152.2 million, excluding fees and expenses relating to the offer. As of November 30, 2014, NYRT had 162.2 million shares of NYRT common stock outstanding, including restricted stock, converted preferred shares and shares issued under its distribution reinvestment plan. As of November 30, 2014, NYRT had total real estate-related assets of $2.5 billion, comprised of 24 properties and real estate-related assets. As of September 30, 2014, NYRT had incurred, cumulatively to that date, $174.9 million in selling commissions, dealer manager fees and offering costs for the sale of its common stock and $42.6 million for acquisition costs related to its portfolio of properties. On December 17, 2014, the closing price per share of NYRT was $10.77.

Phillips Edison Grocery Center REIT I, Inc.

Phillips Edison Grocery Center REIT I, Inc., or PECO, a Maryland corporation, is the third publicly offered REIT co-sponsored by American Realty Capital. PECO was incorporated as Phillips Edison — ARC Shopping Center REIT Inc. on October 13, 2009 and qualified as a REIT beginning with the taxable year ended December 31, 2010. On January 13, 2010, PE-ARC filed its registration statement with the SEC, which became effective on August 12, 2010. PECO invests primarily in necessity-based neighborhood and community shopping centers throughout the United States with a focus on well-located grocery-anchored shopping centers that are well occupied at the time of purchase and typically cost less than $20.0 million per property. On December 3, 2014, PECO and American Realty Capital II Advisors, LLC, which is wholly owned by AR Capital, LLC, terminated their advisory agreement, effective immediately. Such termination was “without cause.” As of November 30, 2014, PECO had received aggregate gross offering proceeds of $1.8 billion, which includes the sale of 181.6 million shares of common stock in its public offering and $77.9 million from its distribution reinvestment program. As of November 30, 2014, PECO had acquired 136 properties and had total real estate investments at cost of $2.1 billion. As of September 30, 2014, PECO had incurred, cumulatively to that date, $186.6 million in offering costs for the sale of its common stock and $38.5 million for acquisition costs related to its portfolio of properties.

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American Realty Capital Healthcare Trust, Inc.

American Realty Capital Healthcare Trust, Inc., or ARC HT, a Maryland corporation, is the fourth publicly offered REIT sponsored by American Realty Capital. ARC HT was organized on August 23, 2010 and qualified as a REIT beginning with the taxable year ended December 31, 2011. On August 27, 2010, ARC HT filed its registration statement with the SEC, which became effective on February 18, 2011. As of April 6, 2014, the day prior to ARC HT’s listing on the NASDAQ Global Select Market (“NASDAQ”), ARC HT had received aggregate gross offering proceeds of $1.8 billion, which includes the sale of 174.3 million shares in its public offering and $80.0 million from its distribution reinvestment plan. On April 7, 2014, ARC HT listed its common stock on the NASDAQ under the symbol “HCT,” or the HCT Listing. In connection with the HCT Listing, ARC HT commenced an offer to purchase up to 13,636,364 shares of its common stock at a price equal to $11.00 per share or an aggregate of $150.0 million in shares of common stock from its stockholders. The offer closed on May 2, 2014 and ARC HT purchased 13.6 million of its common stock at a purchase price of $11.00 per share, for an aggregate cost of $150.0 million, excluding fees and expenses related to the offer. On June 1, 2014, HCT entered into an Agreement and Plan of Merger with Ventas, Inc., a Delaware corporation and its subsidiary. The merger has been approved by both companies’ boards of directors but is subject to stockholder approval and satisfaction of customary closing conditions. As of November 30, 2014, ARC HT had 169.3 million shares of its common stock outstanding, including restricted stock and shares issued under its distribution reinvestment plan. As of November 30, 2014, ARC HT owned 154 healthcare-related properties and one preferred equity investment, with an aggregate purchase price of $2.2 billion. As of September 30, 2014, ARC HT had incurred, cumulatively to that date, $197.5 million in offering costs for the sale of its common stock and $62.6 million for acquisition costs related to its portfolio of properties. On December 17, 2014, the closing price per share of ARC HT was $12.03.

American Realty Capital — Retail Centers of America, Inc.

American Realty Capital — Retail Centers of America, Inc., or ARC RCA, a Maryland corporation, is the fifth publicly offered REIT sponsored by American Realty Capital. ARC RCA was organized on July 29, 2010 and qualified as a REIT beginning with the taxable year ended December 31, 2012. On September 14, 2010, ARC RCA filed its registration statement with the SEC, which became effective on March 17, 2011. As of November 30, 2014, ARC RCA had received aggregate gross proceeds of $936.3 million, which includes the sale of 92.9 million shares in its public offering and $12.6 million from its distribution reinvestment plan. As of November 30, 2014, ARC RCA owned 17 properties with an aggregate purchase price of $525.8 million. As of September 30, 2014, ARC RCA had incurred, cumulatively to that date, $93.2 million in offering costs for the sale of its common stock and $7.2 million for acquisition costs related to its portfolio of properties.

American Realty Capital Daily Net Asset Value Trust, Inc.

American Realty Capital Daily Net Asset Value Trust, Inc. (formerly known as American Realty Capital Trust II, Inc.), or ARC DNAV, a Maryland corporation, is the sixth publicly offered REIT sponsored by American Realty Capital. ARC DNAV was incorporated on September 10, 2010 and has elected to be taxed as a REIT beginning with the taxable year ended December 31, 2013. On October 8, 2010, ARC DNAV filed its registration statement with the SEC, which became effective on August 15, 2011. As of November 30, 2014, ARC DNAV had received aggregate gross proceeds of $24.6 million, which includes the sale of 3.7 million shares in its public offering and $1.0 million from its distribution reinvestment plan. As of November 30, 2014, ARC DNAV owned 14 properties with an aggregate base purchase price of $34.8 million. As of September 30, 2014, ARC DNAV had incurred, cumulatively to that date, $7.3 million in offering costs from the sale of its common stock and $0.9 million for acquisition costs related to its portfolio of properties.

American Realty Capital Trust III, Inc.

American Realty Capital Trust III, Inc., or ARCT III, a Maryland corporation, was the seventh publicly offered REIT sponsored by American Realty Capital. ARCT III was incorporated on October 15, 2010 and qualified as a REIT beginning with the taxable year ended December 31, 2011. On November 2, 2010, ARCT III filed its registration statement with the SEC, which became effective on March 31, 2011. As of February 28, 2013, ARCT III had received aggregate gross proceeds of $1.8 billion which included the sale of 174.0 million shares in its public offering and $31.9 million from its distribution reinvestment plan. As of February 28, 2013, ARCT III owned 533 single-tenant, freestanding properties and had total real estate

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investments, at cost, of $1.7 billion. As of December 31, 2012, ARCT III had incurred, cumulatively to that date, $196.5 million in offering costs for the sale of its common stock and $40.8 million for acquisition costs related to its portfolio of properties. On December 17, 2012, ARCT III and ARCP entered into an Agreement and Plan of Merger under which ARCP acquired all of the outstanding shares of ARCT III. The merger was approved by the independent members of both companies’ boards of directors and was subsequently approved by both companies’ stockholders on February 26, 2013. On February 26, 2013, ARCP stockholders approved the issuance of common stock in connection with the merger and ARCT III stockholders approved the merger. The merger closed on February 28, 2013, pursuant to which ARCT III merged with and into a subsidiary of ARCP. On March 1, 2013, in connection with the merger, ARCT III stockholders received their respective cash or stock consideration from ARCP, as elected, pursuant to terms of the Agreement and Plan of Merger.

American Realty Capital Properties, Inc.

American Realty Capital Properties, Inc., or ARCP, a Maryland corporation, is the eighth publicly offered REIT sponsored by American Realty Capital. ARCP was incorporated on December 2, 2010 and qualified as a REIT beginning with the taxable year ended December 31, 2011. On September 6, 2011, ARCP completed its initial public offering of 5.6 million shares of common stock. ARCP’s common stock is traded on The NASDAQ Global Select Market under the symbol “ARCP.” On November 2, 2011, ARCP completed an underwritten follow-on offering of 1.5 million shares of common stock. In addition, on November 7, 2011, ARCP closed on the underwriters’ overallotment option of an additional 0.1 million shares of common stock. On June 18, 2012, ARCP closed a follow on offering of 3.3 million shares of common stock. In addition, on July 9, 2012, ARCP closed on the underwriters’ overallotment option of an additional 0.5 million shares of common stock. On January 29, 2013, ARCP completed an underwritten public follow-on offering of 1.8 million shares of common stock and an additional 270,000 shares of common stock for the overallotment option of the underwriters. In January 2013, ARCP commenced its “at the market” equity offering under which ARCP has issued 553,300 shares of common stock. On February 28, 2013, ARCT III merged with and into a subsidiary of ARCP, pursuant to the Agreement and Plan of Merger entered into on December 17, 2012, under which ARCP acquired all of the outstanding shares of ARCT III. On March 1, 2013, in connection with the merger, ARCT III stockholders received, pursuant to terms of the Agreement and Plan of Merger, their respective cash or stock consideration from ARCP, as elected. On June 7, 2013, ARCP completed two private placement transactions through which it issued approximately 29.4 million shares of common stock and approximately 28.4 million shares of Series C convertible preferred stock. On November 12, 2013, ARCP closed on the two previously announced private placement transactions for the sale and issuance of approximately 15.1 million shares of common stock and approximately 21.7 million shares of a new Series D Cumulative Convertible Preferred Stock.

In aggregate, through December 31, 2013, ARCP had received $1.1 billion of proceeds from the sale of common and convertible preferred stock. As of December 31, 2013, ARCP owned 1,328 buildings, including properties purchased by ARCT III, freestanding properties and real estate investments, at a purchase price of $5.2 billion. On May 28, 2013, ARCP and CapLease, Inc., or CapLease, entered into an Agreement and Plan of Merger under which ARCP subsequently acquired all of the outstanding shares of CapLease. The merger was approved by both companies’ boards of directors and CapLease’s stockholders and closed on November 5, 2013. Following the closing of ARCP’s merger with CapLease, Inc., ARCP converted all outstanding Series C Shares into shares of common stock. Pursuant to the limit in the Series C Articles Supplementary on the number of shares of its common stock that could be issued upon conversion of Series C Shares, on November 12, 2013, ARCP converted 1.1 million Series C Shares into 1.4 million shares of its common stock. On July 1, 2013, ARCT IV and ARCP entered into an Agreement and Plan of Merger under which ARCP subsequently acquired all of the outstanding shares of ARCT IV. The merger was approved by the independent members of both companies’ boards of directors and ARCT IV's stockholders and closed on January 3, 2014. Effective as of January 8, 2014, ARCP internalized the management services previously provided by American Realty Capital Advisors, LLC and its affiliates, as a result of which ARCP became a self-administered REIT managed full-time by its own management team. On October 22, 2013, ARCP entered into an Agreement and Plan of Merger with Cole Real Estate Investments, Inc., or Cole, under which ARCP subsequently acquired all of the outstanding shares of Cole. The merger was approved by both companies’ boards of directors and stockholders and closed on February 7, 2014.

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On October 29, 2014, ARCP announced that its audit committee had concluded that the previously issued financial statements and other financial information contained in certain public filings should no longer be relied upon. This conclusion was based on the preliminary findings of an investigation conducted by ARCP’s audit committee which concluded that certain accounting errors were made that were not corrected after being discovered, resulting in an overstatement of AFFO and an understatement of ARCP's net loss for the three and six months ended June 30, 2014. ARCP also announced the resignation of its chief financial officer, who is one of the non-controlling owners of the parent of our sponsor, but does not have a role in the management of our sponsor’s or our business. Although ARCP was previously sponsored by the parent of our sponsor, ARCP is a separate company that is no longer sponsored by the parent of our sponsor. We and ARCP have independent accounting teams as well as separate and unique accounting systems, and no shared accounting resources.

American Realty Capital Global Trust, Inc.

American Realty Capital Global Trust, Inc., or ARC Global, a Maryland corporation, is the ninth publicly offered REIT sponsored by American Realty Capital. ARC Global was incorporated on July 13, 2011 and qualified as a REIT beginning with the taxable year ended December 31, 2013. On October 27, 2011, ARC Global filed its registration statement with the SEC, which was declared effective by the SEC on April 20, 2012. As of November 30, 2014, ARC Global had received aggregate gross proceeds of $1.8 billion which includes the sale of 173.2 million shares in its public offering and $40.5 million from its distribution reinvestment plan. As of November 30, 2014, ARC Global owned 296 properties with an aggregate base purchase price of $1.4 billion. As of September 30, 2014, ARC Global had incurred, cumulatively to that date, $188.7 million in offering costs for the sale of its common stock and $61.9 million for acquisition costs related to its property acquisitions.

American Realty Capital Trust IV, Inc.

American Realty Capital Trust IV, Inc., or ARCT IV, a Maryland corporation, was the tenth publicly offered REIT sponsored by American Realty Capital. ARCT IV was incorporated on February 14, 2012 and qualified as a REIT beginning with the taxable year ended December 31, 2012. On March 22, 2012, ARCT IV filed its registration statement with the SEC, which was declared effective by the SEC on June 8, 2012. As of December 31, 2013, ARCT IV had received aggregate gross proceeds of $1.8 billion, which included the sale of 70.2 million shares in its public offering and $21.0 million under its distribution reinvestment plan. As of December 31, 2013, ARCT IV owned 1,231 freestanding properties at an aggregate purchase price of $2.2 billion. As of December 31, 2013, ARCT IV had incurred, cumulatively to that date, $197.1 million in offering costs for the sale of its common stock and $55.7 million for acquisition costs related to its portfolio of properties. On July 1, 2013, ARCT IV and ARCP entered into an Agreement and Plan of Merger under which ARCP subsequently acquired all of the outstanding shares of ARCT IV. The merger was approved by the independent members of both companies’ boards of directors and was subsequently approved by ARCT IV's stockholders on January 3, 2014. The merger on January 3, 2014, pursuant to which ARCT IV merged with and into a subsidiary of ARCP.

American Realty Capital Healthcare Trust II, Inc.

American Realty Capital Healthcare Trust II, Inc., or ARC HT II, a Maryland corporation, is the eleventh publicly offered REIT sponsored by American Realty Capital. ARC HT II was incorporated on October 15, 2012 and qualified to be taxed as a REIT beginning with the taxable year ended December 31, 2013. On October 31, 2012, ARC HT II filed its registration statement with the SEC, which was declared effective by the SEC on February 14, 2013. As of November 30, 2014, ARC HT II received aggregate gross proceeds of $2.1 billion, which includes the sale of 82.0 million shares in its public offering and $36.5 million from its distribution reinvestment plan. As of November 30, 2014, ARC HT II owned 98 properties with an aggregate purchase price of $1.2 billion. As of September 30, 2014, ARC HT II had incurred, cumulatively to that date, $229.1 million in offering costs for the sale of its common stock and $21.6 million for acquisition costs related to its portfolio of properties.

ARC Realty Finance Trust, Inc.

ARC Realty Finance Trust, Inc., or ARC RFT, a Maryland corporation, is the twelfth publicly offered REIT sponsored by American Realty Capital. ARC RFT was incorporated on November 15, 2012 and

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qualified to be taxed as a REIT beginning with the taxable year ended December 31, 2013. On January 22, 2013, ARC RFT filed its registration statement publicly with the SEC, which was declared effective by the SEC on February 12, 2013. As of November 30, 2014, ARC RFT received aggregate gross proceeds of $356.1 million, which includes the sale of 14.2 million shares in its public offering and $4.2 million from its distribution reinvestment plan. As of November 30, 2014, ARC RFT had 42 real estate mortgage debt investments with a total carrying value of $385.5 million and CMBS investments with a fair value of $50.6 million. As of September 30, 2014, ARC RFT had incurred, cumulatively to that date, $31.4 million in offering costs for the sale of its common stock.

American Realty Capital Trust V, Inc.

American Realty Capital Trust V, Inc., or ARCT V, a Maryland corporation, is the thirteenth publicly offered REIT sponsored by American Realty Capital. ARCT V was incorporated on January 22, 2013 and elected to qualify to be taxed as a REIT beginning with the taxable year ended December 31, 2013. On March 6, 2013, ARCT V filed its registration statement publicly with the SEC, which was declared effective by the SEC on April 4, 2013. On November 24, 2014, ARCT V announced an estimated per share net asset value for its common stock of $23.50. As of November 30, 2014, ARCT V received aggregate gross proceeds of $1.6 billion from the sale of 62.0 million shares in its public offering and $76.4 million from its distribution reinvestment plan. As of November 30, 2014, ARCT V owned 463 freestanding properties with an aggregate purchase price of $2.2 billion. As of September 30, 2014, ARCT V had incurred, cumulatively to that date, $173.7 million in offering costs for the sale of its common stock and $49.8 million for acquisition costs related to its portfolio of properties.

Phillips Edison Grocery Center REIT II, Inc.

Phillips Edison Grocery Center REIT II, Inc., or PECO II, a Maryland corporation, is the fourteenth publicly offered REIT sponsored by American Realty Capital. PECO II was incorporated as Phillips Edison — ARC Grocery Center REIT II, Inc. on June 5, 2013 and intends to elect and qualify as a REIT beginning with the taxable year ending December 31, 2014 or its first year of material operations. On August 13, 2013, PECO II filed its registration statement with the SEC, which was declared effective by the SEC on November 25, 2013. As of November 30, 2014, PECO II received aggregate gross proceeds of $533.9 million from the sale of 21.5 million shares in its public offering and 5.7 million from its distribution reinvestment plan. As of November 30, 2014, PECO II owned 16 properties at an aggregate purchase price of $255.3 million. As of September 30, 2014, PECO II had incurred, cumulatively to that date, $52.3 million in offering costs for the sale of its common stock and $2.1 million in acquisition costs related to its portfolio of properties.

American Realty Capital Hospitality Trust, Inc.

American Realty Capital Hospitality Trust, Inc., or ARC HOST, a Maryland corporation, is the fifteenth publicly offered REIT sponsored by American Realty Capital. ARC HOST was incorporated on July 25, 2013 and intends to elect and qualify as a REIT beginning with the taxable year ending December 31, 2014 or its first year of material operations. On August 16, 2013, ARC HOST filed its registration statement with the SEC, which was declared effective by the SEC on January 7, 2014. As of November 30, 2014, ARC HOST received aggregate gross proceeds of $216.2 million from the sale of 8.7 million shares in its public offering and $1.6 million from its distribution reinvestment plan. As of November 30, 2014, ARC HOST owned six properties at an aggregate purchase price of $112.0 million. As of September 30, 2014, ARC HOST had incurred, cumulatively to that date, $15.8 million in offering costs for the sale of its common stock and $7.6 million in acquisition costs related to its portfolio of properties.

Business Development Corporation of America

The American Realty Capital group of companies also has sponsored Business Development Corporation of America, or BDCA, a Maryland corporation. BDCA was organized on May 5, 2010 and is a publicly offered specialty finance company which has elected to be treated as a business development company under the Investment Company Act. As of November 30, 2014, BDCA had raised gross proceeds of $1,691.0 million which includes the sale of 149.7 million shares in its public offering and $56.2 million from its distribution

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reinvestment plan. As of November 30, 2014, BDCA’s investments, at amortized cost, were $1.9 billion. As of September 30, 2014, BDCA had incurred, cumulatively to that date, $158.8 million in offering costs for the sale of its common stock.

American Energy Capital Partners, LP

The American Realty Capital group of companies also has sponsored American Energy Capital Partners, LP, or AEP, a Delaware limited partnership. AEP is American Realty Capital’s first oil and gas limited partnership and was organized on October 30, 2013. AEP was formed to acquire, develop, operate, produce and sell working and other interests in producing and non-producing oil and natural gas properties located onshore in the United States. AEP filed a registration statement with the SEC on December 13, 2013, which was declared effective on May 8, 2014. As of November 30, 2014, AEP had raised gross proceeds of $4.6 million which includes the sale of 0.2 million shares in its public offering. As of November 30, 2014, AEP had made no investments. As of September 30, 2014, AEP had incurred, cumulatively to that date, $2.6 million in offering costs relating to the sale of its limited partner interests.

American Realty Capital New York City REIT, Inc.

American Realty Capital New York City REIT, Inc., or ARC NYCR, a Maryland corporation, is the sixteenth publicly offered REIT sponsored by American Realty Capital. ARC NYCR was incorporated on December 19, 2013 and intends to elect and qualify to be taxed as a REIT beginning with the taxable year ending December 31, 2014 or its first year of material operations. On February 26, 2014, ARC NYCR filed its registration statement with the SEC, which became effective on April 24, 2014. As of November 30, 2014, ARC NYCR received aggregate gross proceeds of $469.8 million from the sale of 18.8 million shares in its public offering and $3.4 million from its distribution reinvestment plan. As of November 30, 2014, ARC NYCR owned four properties at an aggregate purchase price of $262.5 million. As of September 30, 2014, ARC NYCR had incurred, cumulatively to that date, $36.7 million in offering costs for the sale of its common stock and $2.2 million for acquisition costs related to its portfolio of properties.

United Development Funding Income Fund V

United Development Funding Income Fund V, or UDF V, a Maryland corporation, is the seventeenth publicly offered REIT sponsored by American Realty Capital and is co-sponsored by UDF Holdings, L.P. UDF V was incorporated on October 1, 2013 and intends to elect and qualify to be taxed as a REIT beginning with the taxable year ending December 31, 2014 or the first year during which UDF V commences real estate operations. On February 26, 2014, UDF V filed its registration statement with the SEC, which became effective on July 25, 2014. UDF V was formed to generate current interest income by investing in secured loans and producing profits from investments in residential real estate. As of November 30, 2014, UDF V received aggregate gross proceeds of $6.4 million from the sale of 0.3 million shares in its public offering. As of November 30, 2014, UDF V had made no investments. As of September 30, 2014, UDF V had incurred, cumulatively to that date, $4.9 million in offering costs from the sale of its common shares of beneficial interest.

American Realty Capital Global Trust II, Inc.

American Realty Capital Global Trust II, Inc., or ARC Global II, a Maryland corporation, is the nineteenth publicly offered REIT sponsored by American Realty Capital. ARC Global II was incorporated on April 23, 2014 and intends to elect and qualify to be taxed as a REIT beginning with the taxable year ending December 31, 2014 or its first year of material operations. On June 6, 2014, ARC Global II filed its registration statement with the SEC, which became effective on August 26, 2014. As of November 30, 2014, ARC Global II received aggregate gross proceeds of $19.3 million from the sale of 0.8 million shares in a private placement. As of November 30, 2014, ARC Global II had not acquired any properties. As of September 30, 2014, ARC Global II had incurred, cumulatively to that date, $1.8 million in offering costs for the sale of its common stock.

American Realty Capital — Retail Centers of America II, Inc.

American Realty Capital — Retail Centers of America II, Inc., or ARC RCA II, a Maryland corporation, is the twentieth publicly offered REIT sponsored by American Realty Capital. ARC RCA II was incorporated on April 23, 2014 and intends to elect and qualify to be taxed as a REIT beginning with the taxable year

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ending December 31, 2014 or its first year of material operations. On June 9, 2014, ARC RCA II filed its registration statement with the SEC, which became effective on September 25, 2014. As of November 30, 2014, ARC RCA II received aggregate gross proceeds of $0.2 million from the sale of 8,888 shares in a private placement. As of November 30, 2014, ARC RCA II had not acquired any properties. As of September 30, 2014, ARC RCA II had incurred, cumulatively to that date, $1.8 million in offering costs for the sale of its common stock.

Business Development Corporation of America II

The American Realty Capital group of companies also has sponsored Business Development Corporation of America II, or BDCA II, a Maryland corporation. BDCA II was organized on April 17, 2014 and is a publicly offered specialty finance company which has elected to be treated as a business development company under the Investment Company Act. On July 15, 2014, BDCA II filed its registration statement with the SEC, which became effective on September 8, 2014. As of November 30, 2014, BDCA II received aggregate gross proceeds of $0.2 million from the sale of 22,222 shares in a private placement. As of November 30, 2014, BDCA II had not made any investments. As of September 30, 2014, BDCA II had incurred, cumulatively to that date, $1.5 million in offering costs for the sale of its common stock.”

Subscription Agreements

The form of subscription agreement included as Appendix C-1 to this Supplement No. 6 hereby replaces Appendix C-1 to the Prospectus.

The form of multi-offering subscription agreement included as Appendix C-2 to this Supplement No. 6 hereby replaces Appendix C-2 to the Prospectus.

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APPENDIX C-1

 

C-1-1

 

C-1-2

 

C-1-3

 

C-1-4

 

C-1-5

 

C-1-6

 

C-1-7

 

C-1-8

 

C-1-9

 

C-1-10

 

C-1-11

APPENDIX C-2

 

C-2-1

 

C-2-2

 

C-2-3

 

C-2-4

 

C-2-5

 

C-2-6

 

C-2-7

 

C-2-8

 

C-2-9

 

C-2-10

 

C-2-11

 

C-2-12

 

C-2-13

 

C-2-14

 

C-2-15

 

C-2-16

 

C-2-17

 

C-2-18

 

C-2-19

 

C-2-20

 

C-2-21

 

C-2-22