OPINION OF THE COURT
Graffeo, J.In this proceeding, we hold that the Martin Act applies to the proposed privatization of a Mitchell-Lama cooperative apartment complex. Based on the circumstances of this case, we also conclude that a vote to determine whether the cooperative withdraws from the Mitchell-Lama program must be counted on a per-apartment basis rather than a per-share basis.
L
Petitioner East Midtown Plaza Housing Company, Inc. (East Midtown) has been a limited-profit housing company organized under the Mitchell-Lama Law since 1968.1 It operates a 746-unit cooperative housing project located in six buildings in *167Manhattan. Ownership shares in East Midtown are not allocated equally among the apartment units; larger units are allotted more shares. East Midtown’s certificate of incorporation specifies that each shareholder is entitled to one vote at shareholder meetings, regardless of the number of shares owned. In 2004, East Midtown’s cooperative shareholders held a vote to decide whether to withdraw from the Mitchell-Lama program and become a private cooperative apartment complex, as permitted by Private Housing Finance Law § 35.2 Under the proposed privatization plan, East Midtown would dissolve and all its assets would be transferred to a newly incorporated private cooperative, accompanied by a formal issuance of new shares in the entity. If the votes were counted on a per-share basis, the 2004 proposal achieved the requisite two-thirds supermajority for passage, but if the votes were counted on a per-apartment basis, the proposal did not garner sufficient votes for privatization.
After the vote was taken, respondents, the New York City Department of Housing Preservation and Development (HPD) and the New York State Attorney General, informed East Midtown that a new vote was required because East Midtown had improperly held the privatization vote without first filing a cooperative offering plan with the Attorney General’s office pursuant to the Martin Act. The Attorney General also notified East Midtown that, in accordance with the voting rights provision in East Midtown’s certificate of incorporation, passage by two thirds of East Midtown’s dwelling units, rather than two thirds of the outstanding shares, would be necessary for approval.
*168East Midtown subsequently revised its privatization proposal and in 2008 the Attorney General accepted the offering plan. Unlike the 2004 proposal, the 2008 plan did not contemplate a transfer of property or a physical exchange of shares. Rather, the privatization was to be effectuated by an amendment to East Midtown’s certificate of incorporation. The proponents of the new plan informed shareholders that HPD had taken the position that the privatization vote was to “be conducted on an apartment-by-apartment basis (i.e., one vote per apartment) without regard to the number of shares held by each shareholder.” East Midtown further advised the shareholders that it was reserving the right to challenge the voting requirement directing a count on a per-apartment basis.
A second vote was held in 2009, resulting in the same outcome as the original 2004 vote: the proposal would have been approved if the votes were tallied using a one-vote-per-share rule, but not if counted under a one-vote-per-household formula as directed by the certificate of incorporation and HPD. Following the vote, East Midtown filed a proposed second amendment to the offering plan with the Attorney General. This amendment sought to declare the privatization plan “effective,” stating that the 2008 plan had been adopted by “the affirmative vote of at least two thirds of the outstanding shares of East Midtown . . . by counting one vote per share.” The Attorney General refused to accept the amendment.
East Midtown responded by commencing this CPLR article 78 proceeding seeking to compel the Attorney General to accept the second amendment declaring the plan effective and to direct HPD to recognize that the plan achieved the necessary two-thirds shareholder vote under the one-vote-per-share formula. The petition also sought a declaration that the Attorney General lacked jurisdiction over East Midtown’s efforts to exit the Mitchell-Lama program on the theory that the Martin Act did not apply to the transaction. Two tenant organizations intervened in the litigation—East Midtown Plaza Tenant-Cooperator Association, which supported East Midtown, and East Midtown Plaza Mitchell-Lama Organization, a group that opposed privatization.
Supreme Court denied the petition and dismissed the proceeding (2010 NY Slip Op 30532[U] [2010]). The Appellate Division, with one Justice dissenting, affirmed (85 AD3d 485 [1st Dept 2011]). We granted East Midtown and East Midtown Plaza Tenant-Cooperator Association leave to appeal (18 NY3d 803 [2012]), and now affirm.
*169IL
With respect to the jurisdictional reach of the Martin Act, East Midtown argues that it should not have been required to file an offering plan because the Attorney General lacks authority over its withdrawal from the Mitchell-Lama program. East Midtown contends that the Martin Act—the statutory predicate for the Attorney General’s oversight—does not apply here because its 2008 privatization plan did not involve the “offering or sale” of securities as required by the statute. It emphasizes that, although the original 2004 proposal would have resulted in a transfer of assets and/or exchange of shares, the 2008 plan merely called for an amendment to East Midtown’s certificate of incorporation, with no conveyance of shares. The Attorney General disagrees, asserting that, however it is packaged, the privatization of a Mitchell-Lama cooperative complex comfortably falls within the parameters of the Martin Act.
The Martin Act (General Business Law art 23-A) regulates the offer and sale of securities within or from New York (see Kralik v 239 E. 79th St. Owners Corp., 5 NY3d 54, 58 [2005]). The Attorney General is responsible “for implementing and enforcing the Martin Act, which grants both regulatory and remedial powers aimed at detecting, preventing and stopping fraudulent securities practices” (id. at 58-59). As relevant here, the Martin Act makes it illegal for a person to make or take part in “a public offering or sale” of securities consisting of participation interests in real estate, including cooperative apartment buildings, unless an offering statement is filed with the Attorney General (General Business Law § 352-e [1] [a]).3 The purpose of the disclosures required in an offering plan is to safeguard the purchasers of cooperatives and condominiums by mandating “full disclosure of risks” and promoting “unit purchasers’ self-protection by analysis of risks” (Kerusa Co. LLC v W10Z/515 Real Estate Ltd. Partnership, 12 NY3d 236, 243 [2009] [internal quotation marks and citation omitted]).
We have emphasized that General Business Law § 352-e (1) (a) “should be liberally construed to give effect to its remedial purpose of protecting the public from fraudulent exploitation in *170the offer and sale of securities” (All Seasons Resorts v Abrams, 68 NY2d 81, 86-87 [1986]). In our application of the Martin Act we have repeatedly found it appropriate to be guided by the decisions of federal courts interpreting federal blue sky laws (see id. at 87; see also People v Landes, 84 NY2d 655, 660 [1994] [“Although the Martin Act was enacted in 1921, its present form generally tracks the Federal securities acts of 1933 and 1934. Accordingly, we have looked to Federal court decisions construing those statutes when interpreting our own”]; State of New York v Rachmani Corp., 71 NY2d 718, 726 [1988] [observing that the remedial purposes of the state and federal statutes are the same and that General Business Law § 352-e (1) (a) “makes specific reference to the Federal Securities Act of 1933”]). We therefore turn to the federal precedents.
Federal courts have recognized that changes in the rights of the holders of existing securities can amount to a “purchase or sale” within the meaning of the federal securities laws. The Second Circuit has explained that the test is whether there has been such a “significant change in the nature of the investment or in the investment risks as to amount to a new investment” (Gelles v TDA Indus., Inc., 44 F3d 102, 104 [2d Cir 1994] [internal quotation marks and citation omitted]; see also Abrahamson v Fleschner, 568 F2d 862, 868 [2d Cir 1977], cert denied sub nom. Harry Goodkin & Co. v Abrahamson, 436 US 905 [1978] [same]; 3 Hazen, Securities Regulation § 12.6 [1] at 557 [6th ed 2009] [“Concepts of purchase and sale are to be construed flexibly in order to accomplish the purpose of the securities laws. The courts will consider the economic reality of the transaction and whether it lends itself to fraud in the making of an investment decision”]). The pertinent inquiry focuses on “the economic reality of the transaction” (Keys v Wolfe, 709 F2d 413, 417 [5th Cir 1983] [internal quotation marks and citation omitted]). We have applied a similarly adaptable standard in ascertaining whether an interest qualifies as a “security” within the meaning of the Martin Act, recognizing that substance and economic actuality will control over form (see All Seasons Resorts, 68 NY2d at 88).
Here, the privatization of East Midtown’s cooperative apartment complex would result in a number of substantial changes to the nature of its shareholders’ interests. Most fundamentally, privatization would enable residents to sell their shares at market rates. In stark contrast, the resale price of shares in a Mitchell-Lama cooperative apartment is set by law at an amount *171that permits a seller to recover paid-in capital, not earn a profit (see Private Housing Finance Law § 31-a). Indeed, East Midtown acknowledges that the ability to sell shares at market prices is the primary reason why it desires to exit the Mitchell-Lama program.
Furthermore, privatization would result in East Midtown’s loss of eligibility for government-subsidized financing and property tax reductions available under Mitchell-Lama. Other significant alterations upon privatization would include the imposition on shareholders of a 45% transfer fee or “flip tax” to be paid to East Midtown from the proceeds of the first sale of shares; the possibility that individual shareholders would become disqualified for government programs for persons in need; and potential increases in maintenance charges. In short, the changes affecting shareholders are substantial enough to constitute a different investment such that the proposed privatization can fairly be characterized as an “offering or sale” of securities under the Martin Act.
We do not accept East Midtown’s argument distinguishing the 2004 and 2008 privatization plans since it elevates form over substance. Mindful of the economic realities of the transaction, it matters not that the 2008 plan envisioned an amendment to the certificate of incorporation rather than a physical exchange of shares, as contemplated by the earlier plan (see 3 Hazen, Securities Regulation § 12.6 [3] at 558-559 [6th ed 2009] [“Amendments to a corporation’s articles of incorporation may result in the alteration of existing shareholder rights and thus change the nature of the shares. Alterations in the rights of securities holders can constitute a sale of the old securities and a purchase of the new”]). The end result under either proposal is the same—privatization and market value resale potential. Hence, the Attorney General properly required East Midtown to file an offering statement under the Martin Act to allow existing shareholders to make an informed decision regarding the pros and cons of withdrawal from the Mitchell-Lama program.
IIL
East Midtown also contends that the courts below erred in holding that the shareholder vote to privatize had to be counted on a one-vote-per-apartment basis. It claims that the Business Corporation Law and an HPD regulation both require that the vote be calculated using a one-vote-per-share formula, regardless of the language in the certificate of incorporation. Under *172this formulation, the 2009 vote resulted in sufficient votes for approval of the 2008 privatization plan. HPD and the Attorney General counter that the courts below properly concluded that the vote was governed by a one-vote-per-apartment rule and, under this methodology, the 2009 vote did not achieve the necessary supermajority margin to exit Mitchell-Lama.
Our analysis focuses on East Midtown’s certificate of incorporation, which expressly provides that its shareholders “shall be entitled to one vote at any and all meetings of stockholders for any and all purposes regardless of the number of shares held by such holder, except as otherwise provided by statute.” In other words, as East Midtown acknowledges, the certificate generally establishes a one-vote-per-apartment formula. East Midtown relies on the final clause of the voting provision, asserting that Business Corporation Law § 1001 “otherwise provides” a different method—it directs that a privatization vote be conducted on a one-vote-per-share basis.
Business Corporation Law § 1001 generally governs the dissolution of a corporation.4 As relevant to this case, section 1001 provides that dissolution may be authorized at a shareholder meeting by “two-thirds of the votes of all outstanding shares entitled to vote thereon” (Business Corporation Law § 1001 [a] [ii]). East Midtown interprets this language to mandate a per-share vote for corporate dissolution, regardless of any contrary language that may be found in the corporation’s certificate of incorporation. We are not persuaded for three reasons. First, section 1001 requires a two-thirds vote of “all outstanding shares entitled to vote” to approve dissolution (emphasis added). In substance, the one-vote-per-apartment rule set forth in East Midtown’s certificate of incorporation entitles the holder of shares to one vote at stockholder meetings.5 Second, the reference to “all outstanding shares” in section 1001 clarifies that a dissolution vote must be passed not merely by two thirds of those voting at the shareholder meeting *173(see Business Corporation Law § 614 [b] [unless otherwise specified in the Business Corporation Law, votes are to be calculated by reference to those present and voting at a quorum meeting]), but by a supermajority of all shareholders in the company. Finally, the thrust of section 1001 is directed to how corporate shareholders may authorize dissolution; the statute does not purport to calculate the relative weight to be given to each share entitled to vote.
Instead, a different provision of the Business Corporation Law specifically addresses shareholder voting rights. Business Corporation Law § 612 (a) states that “[e]very shareholder of record shall be entitled at every meeting of shareholders to one vote for every share standing in his name on the record of shareholders, unless otherwise provided in the certificate of incorporation” (emphasis added). Section 612 therefore establishes a default rule of one vote per share. But it allows corporations to adopt a different vote-count methodology in their certificates of incorporation. And East Midtown did just that, it selected a one-vote-per-household voting formula in its certificate of incorporation. Because the Business Corporation Law does not mandate any specific method of vote calculation, we believe that East Midtown’s certificate of incorporation controls.6
East Midtown further asserts that an HPD regulation in effect at the time of the 2009 vote required that the votes be counted on a per-share basis. That regulation provided: “Dissolution and/or reconstitution of the mutual housing company requires approval of two-thirds (2/s) of the outstanding shares of the corporation as mandated by the Business Corporation Law” (28 RCNY 3-14 [i] [former (7)]).7 Although the regulation may have been inartfully worded, it incorporated by reference and tracked Business Corporation Law § 1001 (a) (ii). For the same reasons that lead us to conclude that no conflict exists between the Business Corporation Law and East Midtown’s certificate of incorporation, the HPD regulation can be read compatibly with the certificate of incorporation.
Consequently, the courts below correctly held that the 2009 vote should be calculated using the one-vote-per-apartment *174formula contained in East Midtown’s certificate of incorporation. Because the necessary two-thirds approval was not met under this methodology, the Attorney General properly refused to accept East Midtown’s second amendment declaring an effective vote to privatize. East Midtown therefore remains subject to the Mitchell-Lama Law until such a time as two thirds of the households agree to a privatization plan.
Accordingly, the order of the Appellate Division should be affirmed, with costs.
Chief Judge Lippman and Judges Cipakick, Read, Smith and Pigott concur.
Order affirmed, with costs.
. The legislature adopted the Mitchell-Lama Law (Private Housing Finance Law art II) in 1955 to offer private housing companies financial incentives to develop low and moderate income housing (see Matter of KSLM*167Columbus Apts., Inc. v New York State Div. of Hous. & Community Renewal, 5 NY3d 303, 308 [2005]). The program “encourages such housing by offering State and municipal assistance to developers in the form of long-term, low-interest government mortgage loans and real estate tax exemptions. In return for these financial benefits, developers agree to regulations concerning rent, profit, disposition of property and tenant selection” (Matter of Columbus Park Corp. v Department of Hous. Preserv. & Dev. of City of N.Y., 80 NY2d 19, 23 [1992]).
. Plainly, the Martin Act applies to the conversion of a rental apartment building into a cooperative building (see 511 W. 232nd Owners Corp. v Jennifer Realty Co., 98 NY2d 144 [2002]; Richards v Kaskel, 32 NY2d 524 [1973]). The question posed by this appeal is whether the act further applies to the privatization of an already-existing Mitchell-Lama cooperative apartment complex.
. The Mitchell-Lama Law contemplates the dissolution and reconstitution of a limited-profit housing company that desires to privatize (see Private Housing Finance Law § 35 [2], [3]).
. East Midtown’s certificate of incorporation permits only one class of shares. The one-vote-per-apartment voting method is compatible with the certificate’s requirements because East Midtown has but one class of shares and the certificate specifies how votes are counted within that class—a holder is entitled to one vote.
. We note that the parties do not address the applicability, if any, of the Not-for-Profit Corporation Law.
. HPD subsequently amended 28 RCNY 3-14 (i) (7) to require approval by two thirds of the dwelling units in the housing company. The parties all agree that the revised regulation, promulgated after the 2009 vote, does not apply to this case.