OPINION OF THE COURT
In this appeal we consider a question of first impression under Pennsylvania law: whether a shareholder/director may be compelled to arbitrate her civil rights claims pursuant to corporate bylaws to which she has not explicitly assented. When first presented with this issue, we petitioned the Pennsylvania Supreme Court to certify the question because we found that it exposed tension between corporate law principles and arbitration contract principles. The Pennsylvania Supreme Court denied the petition, so we shall answer the question.
I.
Alyson J. Kirleis practices law with the Pittsburgh firm of Dickie, McCamey & Chilcote, P.C. (Firm). She worked at the Firm as a summer associate in 1987 and became a full-time associate the following year. In 1998, Kirleis became a Class B shareholder and was promoted to Class A shareholder/director in 2001. Since she became a shareholder/director, Kirleis’s relationship with the Firm has been governed by the Firm’s corporate bylaws.
Kirleis filed two complaints against the Firm in the United States District Court for the Western District of Pennsylvania alleging sex discrimination, retaliation, and hostile work environment in violation of *159 federal and state law. 1 The Firm filed a motion to compel arbitration pursuant to 9 U.S.C. § 4, citing a mandatory arbitration provision in its bylaws. The District Court denied the motion and the Firm filed this timely appeal. 2
II.
The District Court had jurisdiction under 28 U.S.C. § 1331. We have jurisdiction pursuant to 9 U.S.C. § 16(a)(1)(B). Our review of the District Court’s order denying the motion to compel arbitration is plenary.
First Liberty Inv. Group v. Nicholsberg,
III.
The Firm’s motion to compel arbitration was based on the following provision of its bylaws:
Section 9.01. ARBITRATION.
(a) General Rule: Any dispute arising under these By-Laws including disputes related to the right to indemnification, contribution or advancement of expenses as provided under these By-Laws, shall be decided only by arbitration in Pittsburgh, Pennsylvania, in accordance with the commercial arbitration rules of the American Arbitration Association, before a panel of three arbitrators, one of whom shall be selected by the corporation, the second of whom shall be selected by the shareholder, director, officer, or indemnified representative and the third of whom shall be selected by the other two arbitrators.
As relevant to this appeal, Kirleis averred in her affidavit:
15. I was never provided with a copy of the By-Laws of defendant Firm at the time that I was made a Class B shareholder or at anytime thereafter. In fact, I only saw the documents which Mr. Wiley purports to be Firm’s By-Laws for the first time when I received Mr. Wiley’s Affidavit in connection with this case, approximately 9 years after being made a Class B shareholder-employee and 19 years after commencing the practice of law with the firm.
16. I was never informed of the presence of the arbitration provision in the By-Laws which Firm is now seeking to enforce against me.
17. I never signed any agreement or document which refers to or incorporates the arbitration provision in the By-Laws.
*160 18. I never agreed to arbitrate my claims against Firm.
At this stage of the litigation, the Firm has not challenged the veracity of Kirleis’s averments. Instead, the Firm argues that her status as a shareholder/director charged Kirleis with constructive knowledge of the terms of the bylaws and manifested her acceptance of the arbitration provision. In support of this argument, the Firm notes that Kirleis accepted compensation and perquisites pursuant to the bylaws. For example, Section 3.08(g) of the bylaws provided Kirleis with, inter alia, a ear allowance of $600 per month, a parking lease at the Firm’s PPG Place office complex, an annual trip to a legal seminar or convention with airfare included, 4 reimbursement of 70% of her annual dues at St. Clair Country Club, and a life insurance policy with a death benefit of $800,000. In addition, Kirleis accepted: (1) compensation pursuant to Section 4.03(h) of the bylaws; (2) a position on the Board of Directors pursuant to Section 2.02; and (3) a right to vote on all Firm matters reserved to the Board, pursuant to Section 1.03(b). Finally, Kirleis held various management positions, including: chairperson of the Associate Review Committee, member of an ad hoc committee charged with administering an Executive Committee election, and member of the Shareholder Review Committee.
In sum, the Firm argues, as it did before the District Court, that Kirleis “cannot have it both ways” by selectively accepting the benefits of the bylaws under Sections 1, 2, 3, and 4 while refusing to be bound by the arbitration clause of Section 9.
IV.
To determine whether the parties agreed to arbitrate, we turn to “ordinary state-law principles that govern the formation of contracts.”
First Options of Chic., Inc. v. Kaplan,
It is well established that the Federal Arbitration Act (FAA), reflects a “strong federal policy in favor of the resolution of disputes through arbitration.”
Alexander v. Anthony Int'l L.P.,
Under Pennsylvania law, contract formation requires: (1) a mutual manifestation of an intention to be bound, (2) terms sufficiently definite to be enforced, and (3) consideration.
Blair,
In support of her argument that no arbitration contract was formed, Kirleis relied heavily on the Pennsylvania Superior Court’s decision in Quiles, which held:
Because [the employee] was never given the handbook that included the information explaining the company’s policy to exclusively arbitrate any workplace disputes, she was unable to accept the terms of the agreement to arbitrate. Without her acceptance, there was no agreement formed between the parties and, thus, no grounds to compel arbitration.
The Firm claims that the District Court erred by: (1) finding Kirleis’s “self-serving and conclusory affidavit” sufficient to establish a genuine issue of fact as to the existence of an agreement to arbitrate; (2) ignoring the “well-settled” corporate law principle that members of the corporation are “presumed to know and understand” the bylaws; (3) relying on Quiles; and (4) allowing Kirleis to accept benefits of the bylaws without honoring her responsibilities thereunder. We consider these arguments seriatim.
A.
The Firm first argues that Kir-leis’s “self-serving and conclusory” affidavit cannot create a genuine issue of material fact regarding the existence of an arbitration agreement.
It is true that “conclusory, self-serving affidavits are insufficient to withstand a motion for summary judgment.”
Blair,
Contrary to the Firm’s assertion, Kir-leis’s affidavit satisfies this standard. Far from a conclusory statement that she never agreed to arbitrate, Kirleis details the specific circumstances that rendered the formation of an agreement to arbitrate impossible. For example, she swore under oath that she “was never provided with a copy of the By-Laws of defendant Firm,” “never signed any agreement or document which refers to or incorporates the arbitration provision in the By-Laws,” and “never agreed to arbitrate ... claims against Firm.” Not only are these allegations sufficiently specific, they are uncontested by the Firm. Had the Firm submitted contradictory evidence showing that Kirleis had received the bylaws or had signed them,
*162
its argument regarding the sufficiency of Kirleis’s affidavit would merit further discussion. Even then, the task of weighing the evidence and choosing which side to believe would have been for a jury.
Par-Knit Mills,
The cases cited by the Firm do not suggest a different conclusion. The Firm cites a Southern District of Indiana case for the proposition that an employee’s own “self-serving affidavit” attesting to the fact that she “was not given the opportunity to read [an arbitration] agreement” before signing it was not “sufficient evidence to show a triable issue as to the validity and enforceability of [that] agreement.” Firm Br. 14-15 (citing
Ortiz v. Winona Mem. Hosp.,
Here, the averments in Kirleis’s affidavit go well beyond those alleged by the employee in
Ortiz.
For example, Kirleis alleges that she was neither aware of nor received the arbitration provision contained in the Firm’s bylaws.
A fortiori,
she was never given the opportunity to read or consent to it. Moreover, Kirleis was never asked to sign any document that included an arbitration agreement.
Cf. Ortiz,
The Firm also relies on a case in which an employer distributed to its employees in paycheck envelopes a brochure entitled “Pinkerton’s Arbitration Program.”
Tinder v. Pinkerton Sec.,
This appeal differs significantly from
Tinder.
First, Kirleis averred that she “was never provided with a copy of the By-Laws of defendant Firm,” not that she merely could not “recall seeing or reviewing” them. Second, the material issue here is whether Kirleis agreed to be bound by the Firm’s arbitration provision, not whether a document containing that provision was ever distributed to her. Even had she received such a document — which the uncontroverted evidence indicates she did not — -a mere offer is insufficient to create a triable issue as to the existence of a contract to arbitrate.
See Blair,
Kirleis submitted specific, undisputed evidence that she never agreed to arbitrate her claims against the Firm. The District Court did not err in finding that this evidence creates a genuine issue of material fact.
B.
The Firm next argues that Kirleis’s status as a shareholder/director of the Firm put her on constructive notice of the arbitration provision in the bylaws and implied her intent to be bound thereby. This argument has persuasive force as it highlights the tension between corporate law principles — which generally impute to
*163
members of the corporation knowledge and acceptance of corporate bylaws — and the law of contracts, which requires consent to be bound.
Compare Morris v. Metalline Land Co.,
Seizing on this tension, the Firm cites two cases for the proposition that a court may compel arbitration because of “arbitration provisions contained within corporate bylaws.” Firm Br. 15 (citing
Bercovitch v. Baldwin Sch., Inc.,
In
Bercovitch,
plaintiffs sued a private school for discrimination pursuant to the Americans with Disabilities Act. The school moved to compel arbitration because plaintiffs signed an agreement that manifested them intention to “abide by the By-Laws of the School ... [cjopies [of which] [were] available for review at the school main office.”
Bercovitch,
Bercovitch
is distinguishable for two reasons. First, unlike the plaintiffs in that case, Kirleis never signed any arbitration agreement or other document that incorporated the arbitration provision in the bylaws. Even more fundamentally, the
Bercovitch
plaintiffs never challenged the existence of an agreement to arbitrate between themselves and the school.
Bercovitch,
The Firm’s reliance on
Rushing
is likewise misplaced. Apart from the fact that it is an out-of-jurisdiction intermediate state court decision, the party seeking to avoid arbitration in that case signed an agreement in which he “expressly consented to be bound by the [cooperative’s] ByLaws” and any By-Laws “hereafter in effect.”
Rushing,
In sum, under Pennsylvania law, explicit agreement is essential to the formation of an enforceable arbitration contract.
Eltz,
C.
The Firm next argues that the District Court erred in relying on
Quiles v. Financial Exchange Co.,
In Quiles, Dollar Financial Group petitioned to compel its former employee, Luz Quiles, to arbitrate her defamation claim as required by the company’s employee handbook. Id. at 283. Quiles claimed that *164 she never received the handbook, although she admitted to signing an employee acknowledgment form that required her to affirm that she “carefully read the Handbook” and the “DISPUTE RESOLUTION PROGRAM and provisions relating to arbitration” contained therein. Id. at 283-84. The handbook further provided that by accepting employment, all employees agreed to be bound by the dispute resolution program. Id. at 284. The Court of Common Pleas denied Dollar’s petition to compel arbitration, concluding that “because Quiles never received the Handbook, she could not have been fully informed of the arbitration policy and provisions.” Id. at 284.
On appeal, the Pennsylvania Superior Court framed the question as “whether an employee is bound to arbitration provisions found in an employee handbook (when that employee was never given a copy of the handbook containing the actual arbitration provisions and had signed an acknowledgment form stating she read such handbook under suspect circumstances).”
Id.
at 285. Beginning with the general rule that arbitration agreements are presumptively enforceable if they are “specific enough” and “the employee has
expressly
agreed to abide by [their] terms,” the court turned to the specifics of the case.
Id.
at 285 (emphasis added) (citing
Cohn v. Penn Beverage Co.,
The court declined to apply case law suggesting that “a party’s failure to
read
a contract will not justify nullification or avoidance,” because “without a copy of the Handbook, Quiles was not even given the opportunity to read the terms of the arbitration agreement; there was no arbitration clause in the [employee acknowledgment form] signed by Quiles.”
Id.
at 286,
The Firm attempts to distinguish Quiles on two principal grounds: (1) the arbitration provision in Quiles was set forth in an employee handbook while the provision here was in the corporate bylaws, which Kirleis is “presumed to know and understand,” and (2) the employee in Quiles “was from Puerto Rico, had difficulty with the English language, had never completed high school and was unfamiliar with the term ‘arbitration.’ ” Firm Br. 17.
The Firm claims that employee handbooks are different from corporate bylaws because members of a corporation are presumed to understand bylaws in a way that employees are not presumed to understand handbooks. We find this argument persuasive to a point. A shareholder/director of a professional corporation who has had the benefit of advanced education and training and who has been involved in law firm management typically would be more knowledgeable regarding corporate bylaws than an entry-level worker would be likely to know about an employee handbook. But this factual distinction, as cogent as it may be, is immaterial to the fact that Pennsylvania law requires arbitration agreements to be explicit. To the extent the Firm argues that this rule of law does not apply to a corporate share *165 holder/director, we have rejected that argument in Part IV.B., supra.
We also note that Quiles signed an employee acknowledgment form that expressly bound her to arbitrate under her company’s terms. By accepting employment with Dollar, Quiles “agree[d] to be bound by the terms of the [dispute resolution procedures].”
Quiles,
The Firm’s second distinction is even less persuasive because the Superior Court’s observations about Quiles’s background were classic dicta. After concluding that “Quiles could not validly agree to arbitrate her claims without first having been given a copy of the Handbook,” the court wrote: “[i]n addition ... the facts that Quiles was unfamiliar with the English language and had not even received a high school diploma, further invalidated any such agreement to arbitrate.” Id. at 288 (emphasis added). These observations cannot fairly be read as essential to the court’s holding in Quiles.
Contrary to the Firm’s arguments, Quiles is analogous to the present case in at least one critical respect: like Quiles, Kirleis never received a copy of the only document containing the firm’s arbitration provision. Without this document, Enriéis could not have explicitly agreed to arbitrate her claims.
D.
Finally, the Firm argues that Kirleis should be estopped from arguing that she is not bound to arbitrate pursuant to the bylaws because she has availed herself of other benefits provided thereunder.
Equitable estoppel precludes a party from doing an act differently than the manner in which he induced another party to expect.
Zitelli v. Dermatology Educ. & Research Found.,
The Firm cites numerous cases that stand for the unremarkable proposition that a party to a contract cannot enforce favorable terms while disavowing others. Firm Br. 19-21. These cases miss the mark. As we have explained, Kirleis could not have explicitly agreed to arbitrate her claims because she never received a copy of the bylaws and was unaware of the existence of the arbitration provision contained therein. To the extent the Firm argues that Kirleis impliedly agreed to arbitrate, this is a legal impossibility under Quiles for the reasons we explained in Section IV.C., supra. Accordingly, the District Court did not err in rejecting the Firm’s equitable estoppel argument.
V.
We conclude by citing the Pennsylvania Supreme Court’s Order denying our petition to certify the question presented in this case. Therein, the Court chose not to decide the issue, but indicated clearly enough that we have chosen the proper course in resolving the tension between Pennsylvania corporate law and arbitration contract law. The Pennsylvania Supreme Court reasoned:
*166 With regard to the corporate law principle, the Third Circuit quotes a statement in Morris that a member of a corporation “is subject to its constitution, and bound by its by-laws ... which he is presumed to know and understand[.]” On its face, that statement could be seen as being in conflict with the arbitration law precept that an agreement to arbitrate cannot rise by implication. A close review of Morris, however, reveals that the brief passage quoted by the Third Circuit is obiter dicta. Morris did not address the issue of whether a shareholder is bound by bylaws even when that shareholder has no actual knowledge of the bylaws. Rather, the specific relevant question that concerned the Morris Court was whether the company had provided the notice required by the bylaws prior to taking action to the shareholders’ detriment. The phrase stating that a shareholder is presumed to know and understand the bylaws is part of a lengthy quote of an 1877 New Jersey Court of Errors and Appeals decision .... The ‘presumed to know and understand’ phrase which concerns the Third Circuit, on the other hand, had no bearing on the resolution in Morris .... Morris has been quoted only three times and not for the proposition that shareholders are presumed to know the contents of the bylaws.
Kirleis v. Dickie, McCamey & Chilcote, P.C., No. 50 WM 2008 (Pa. Oct. 22, 2008) (internal citations omitted; emphasis in original).
For all the foregoing reasons, we will affirm the judgment of the District Court.
Notes
. Kirleis’s claims arose under the Civil Rights Act of 1964, 42 U.S.C. § 2000e et seq., the Fair Labor Standards Act of 1938, 29 U.S.C. § 201 et seq., and the Pennsylvania Human Relations Act, 43 Pa. Stat. Ann. § 951 ef seq.
. The Firm also filed a motion to dismiss for lack of jurisdiction pursuant to Rule 12(b) of the Federal Rules of Civil Procedure. Therein, the Firm challenged Kirleis’s averment that she is an employee of the Firm. The District Court denied the motion without prejudice to the Firm’s ability to raise it following discovery and this decision is not at issue on appeal.
.The standard for determining whether a genuine issue of material fact exists regarding the existence of an agreement to arbitrate is "quickly recognized as the standard used by district courts in resolving summary judgment motions pursuant to Fed.R.Civ.P. 56(c).”
Par-Knit Mills,
. Kirleis traveled to Rome, Italy in 2006 for a continuing legal education seminar sponsored by Duquesne University Law School. The Firm paid for her conference registration and airfare and provided her with $2,000 in spending money.