OPINION OF THE COURT
Tom, J.P.At issue is whether a letter received by an insured constitutes a “claim” within the meaning of a claims-made insurance policy. Although the term is undefined in the insurance contract, defendant Superintendent of Insurance, as Ancillary Receiver for Reliance Insurance Company, contends that case law dictates that the letter be treated as a claim. Since there is an ambiguity as to what constitutes a claim under the Reliance policy, such ambiguity must be construed against the insurer under the doctrine of contra proferentem. In the context of ongoing attempts by the union representing the insured’s employees to resolve the parties’ dispute, the letter, which neither makes any demand for payment nor advises that legal action will be forthcoming, is insufficient to state a claim.
Plaintiff Yale Club of New York was the insured under two “claims-made” insurance policies issued by Lloyds, London and Reliance, providing directors and officers liability coverage for the years ending on November 23, 1993 and November 23, 1994, respectively. In August 1993, while plaintiff was insured under the Lloyds policy, it received a letter from an attorney representing certain waiters and other employees at the Yale Club who alleged to have been “deprived of tips and bonuses.” The letter requested information to enable compliance with counsel’s stated “obligation to make a reasonable inquiry into the facts before filing a pleading with the courts.” There is no evidence *45that plaintiff ever notified Lloyds about the letter. In February 1994, after coverage had commenced under the Reliance policy, the attorney instituted an action against plaintiff on behalf of 13 Yale Club employees represented by his firm.1 Plaintiff notified the insurer of the claim the following month. Reliance disclaimed coverage in April 1994 on the ground that the August 1993 letter (which defendant terms “The Originating Letter”) constituted notice of a claim made. After Reliance went into liquidation, defendant, as Ancillary Receiver on behalf of the Liquidation Bureau of the New York State Insurance Department (Insurance Law § 7404), resisted payment of plaintiff’s claim for indemnification of its litigation expenses.
The issue of the August 1993 letter’s effect on the insurer’s liability to plaintiff was submitted to a Referee, who found that “the letter was merely a request for information; the claim was properly filed after the Reliance coverage began.” In opposition to plaintiffs motion to confirm the Referee’s report, defendant took the same position as he does on appeal: “The waiters’ claims against The Club here were first made in The Originating Letter, three months prior to and completely outside of the policy period and were therefore clearly outside of the policy coverage.” Defendant relied on the limitation contained in section I of the Reliance policy and in a notice printed at the top of the policy endorsements, which states, “Except as may be otherwise provided herein, the coverage of this policy is limited to liability for acts for which claims are first made against the insured while the policy is in force.” Defendant also invoked section VII of the policy, entitled “Notice of Claim,” which provides:
“A. If, during the Policy Period . . . the Company or the Directors and Officers:
“(1) shall receive written or oral notice from any party that it is the intention of each [sic] party to hold the Directors and Officers, or any of them, responsible for a Wrongful Act; or
“(2) shall become aware of any occurrence which may subsequently give rise to a claim being made against the Directors and Officers, or any of them, for a Wrongful Act;
*46“and if the Company or Directors and Officers shall in either case during such period give written notice as soon as practicable to, the Insurer . . . then any claim which may subsequently be made against the Directors or Officers arising out of such Wrongful Act, shall, for the purpose of this policy, be treated as a claim made during the Policy Year.”
Defendant contended that the August 1993 letter constitutes a claim made against the Yale Club’s officers and directors. Noting that, at the time counsel’s letter was received by plaintiff, the employees’ union had accused the Club of financial improprieties, defendant argued that in context the letter “could not have been viewed in any other light than as a claim.” Defendant concluded that because the letter was received prior to the date the policy commenced, the claim arose outside the policy period, and the insurer was under no obligation to reimburse plaintiff for its defense and settlement costs.
As the Court of Appeals has observed, “The best evidence of what parties to a written agreement intend is what they say in their writing” (Slamow v Del Col, 79 NY2d 1016, 1018 [1992]). Where the meaning of the contract language is clear and unambiguous, it is determined by the court as a matter of law (Hartford Acc. & Indem. Co. v Wesolowski, 33 NY2d 169, 171-172 [1973]). Courts must neither add, excise nor modify the terms of an agreement; nor may a court distort the meaning of an agreement under the guise of interpretation (see Vermont Teddy Bear Co. v 538 Madison Realty Co., 1 NY3d 470, 475 [2004]). Where the contract at issue is an insurance policy, any exclusion from coverage must be stated unambiguously (see Oot v Home Ins. Co. of Ind., 244 AD2d 62, 69 [1998]), and any ambiguity must be resolved against the insurer as drafter of the policy’s language (see Matter of Mostow v State Farm Ins. Cos., 88 NY2d 321, 326 [1996]).
The operative question before this Court is the meaning to be ascribed to the word “claim,” a term that defendant concedes is undefined in the Reliance policy. While the disputed letter certainly conveys the suggestion that a lawsuit was being contemplated, it also states unequivocally that counsel was seeking information in connection with his obligation to determine whether legal action was warranted. Moreover, the letter does not even state that the purpose of any such action would be the recovery of civil damages, merely alleging that the Yale Club’s actions variously “constitute criminal violations, as well as civil *47violations of RICO and the New York State Labor Law, and fraud and conversion.”
The failure of the Reliance policy to provide any definition of “claim” presents an ambiguity that defendant invites this Court to resolve by speculating as to the parties’ intent. This approach must be rejected because New York law ascribes no generally accepted meaning to the term in the context of a claims-made policy (see Andy Warhol Found. for Visual Arts, Inc. v Federal Ins. Co., 189 F3d 208, 215 [1999] [purporting to resolve the ambiguity by formulating a definition “gleaned” from federal case law]). In those New York cases involving the issue of when a claim arose for the purposes of coverage, the term has been defined in the policy as, for instance, “a demand received by the Insured ... for money or services” (Evanston Ins. Co. v GAB Bus. Servs., 132 AD2d 180, 185 [1987]; see also Purcigliotti v Risk Enter. Mgt. Ltd., 240 AD2d 205, 206 [1997]; Heen & Flint Assoc. v Travelers Indem. Co., 93 Misc 2d 1, 4 [1977] [“ ‘Claim’ includes a judgment, arbitration award or any demand for money or services resulting from an actual or alleged act or omission covered hereunder”]).
Counsel’s letter to plaintiff falls far short of a demand for money or services {Retirement Fund of Fur Mfg. Indus, by Foner v Republic Ins. Co., 755 F Supp 625 [SD NY 1991], affd 948 F2d 1275 [2d Cir 1991]), or even the expression of a present intent to initiate legal proceedings (see In re Ambassador Group, Inc. Litig., 830 F Supp 147, 155 [ED NY 1993]). Any action that might have been contemplated in pursuit of the employees’ claim is implicitly conditioned upon the outcome of counsel’s investigation of its merit. Thus, the letter received by plaintiff is not “an assertion of legally cognizable damage, ... a type of demand that can be defended, settled and paid by the insurer” (Evanston Ins. Co., 132 AD2d at 185).
Supreme Court properly confirmed the Referee’s finding that section VII of the Reliance policy is immaterial to the question of whether the letter constitutes a claim. Since the notice of claim provision of section VII (A) (1) is expressly limited to “written or oral notice” received “during the Policy Period,” and it is undisputed that the letter was received prior to the effective date of the policy, subsection (1) is inapposite by its express terms.
Arguably, the letter was sufficient to make plaintiff aware of “occurrence [s] which may subsequently give rise to a claim being made,” thereby obliging plaintiff to give Reliance notice *48of the potential claim “as soon as practicable.” Thus, as the dissenters argue, it could be said that plaintiff, having been in possession of purported notice of the potential claim at the inception of the policy period on November 23, 1993, but having failed to give notice of the claim to Reliance until March 1994, defaulted on its obligation to give the insurer notice “as soon as practicable” under section VII (A) (2) of the notice provision. However, defendant did not advance this basis for avoiding liability under the policy before Supreme Court; nor does defendant raise it on appeal, confining his argument in both instances to the assertion that the claim arose outside the policy period. Thus, the issue of the timeliness of the notice of claim is not preserved for appellate review (see Telaro v Telaro, 25 NY2d 433, 438 [1969]; Recovery Consultants v Shih-Hsieh, 141 AD2d 272, 276 [1988], citing Huston v County of Chenango, 253 App Div 56, 60-61 [1937], affd 278 NY 646 [1938]), and defendant is barred from raising it (see Oot, 244 AD2d at 71).
Defendant does not contend that coverage is precluded by any exclusion contained in the Reliance policy. As pertinent to this dispute, section V excludes any loss “which is insured by another valid policy” or “for which the Directors and Officers are entitled to indemnity and/or payment by reason of having given notice of any circumstances which might give rise to a claim under any policy or policies the term of which has expired prior to the inception date of this policy.” Since there is no indication that plaintiff gave notice to Lloyds of the employees’ claim and since neither the Lloyds policy nor any other affords coverage, these exclusions are inapplicable. Defendant’s sole basis for seeking reversal of the judgment against the Liquidation Bureau is his contention that the claim arose prior to the inception of the Reliance policy and, thus, outside the scope of its coverage.
Defendant’s contention lacks a sound factual predicate. To sustain his attack on the judgment would require this Court to assign an expansive meaning to the term “claim” under uncertain and contentious circumstances. It is uncontested that the workers on whose behalf the letter sought information were represented by a union, and it is apparent that the union was engaged in efforts to resolve the dispute on their behalf and on behalf of the rest of its members employed at the Yale Club. Plaintiffs mere awareness that an action was being contemplated by the attorney for the 13 Yale Club employees was hardly tantamount to notice that an action would be brought, since his investigation could have revealed that suit was unwarranted or *49subsequent events could have rendered an action unnecessary. The mere awareness of alleged wrongdoing is not a “claim” within the meaning of the typical claims-made policy (see Purcigliotti, 240 AD2d at 206).
Defendant’s contention that the letter is a claim relies on the happenstance that an action was ultimately commenced, and it depends wholly on post hoc ergo propter hoc reasoning.2 Without the advantage of hindsight, defendant’s contention that the “letter must be recognized as containing a claim first made prior to the policy period, rendering subsequent pleading of that claim outside the coverage of the policy” must be rejected as speculative.
While, at the time of the August 1993 letter, plaintiff was aware of facts that might possibly have led to litigation, it was equally aware of, and participating in, ongoing negotiations with the employees’ union, which included alternative dispute resolution. As defendant conceded in opposition to plaintiffs motion, the claim purportedly communicated in counsel’s letter was asserted only on behalf of certain Yale Club employees who “did not want to be represented by Local 6,” the Hotel, Restaurant & Club Employees and Bartenders Union. In view of the union’s participation in efforts to resolve the dispute, it was by no means clear that independent legal action by some of its members would be necessary, appropriate or even permissible under the terms of the governing collective bargaining agreement.3 Even if plaintiff could be said to have been aware of the viability of an action limited to those employees disaffected by the union’s representation of their interests, a fact not in evidence, settlement of the dispute or legal action undertaken by the union itself would have obviated any such independent lawsuit. Under these circumstances, the subject letter requesting documents and information in support of counsel’s “inquiry into the facts” does not suffice to state a demand for payment so as to warrant the conclusion that a claim arose at such time (Evanston Ins. Co., 132 AD2d at 185).
*50American Ins. Co. v Fairchild Indus., Inc. (56 F3d 435 [2d Cir 1995]), relied upon by the dissenters, does not require a contrary result. In that case, involving insurance coverage for an environmental violation, discussions conducted well before the manufacturer received the letter alleged to constitute a claim made it clear that the New York State Department of Environmental Conservation intended to require Fairchild Industries to remedy the environmental hazard. The court specifically declined to hold the letter to be a “claim” (a term similarly undefined in the policy) “because no New York case has as of yet addressed that precise issue” (id. at 440).
The Circuit Court presumed to draw a distinction between the effect of a notice of “claim” and a notice of “occurrence” with respect to the insured’s obligation to notify the carrier. This approach was specifically rejected in Reynolds Metal Co. v Aetna Cas. & Sur. Co. (259 AD2d 195 [1999] [involving primary liability insurance policies]), in which the Third Department stated:
“we perceive no reason why a failure to give a timely notice of claim should not be excused by an insured’s good-faith belief in nonliability or noncoverage. It appears illogical that insureds should be required to promptly notify insurers of every claim no matter how remote the possibility of liability or coverage but be excused from doing so if a reasonable evaluation of an occurrence yields the same conclusion” (id. at 201).
As a final point, the language of the Reliance policy’s notice of claim provision does not assist defendant’s attempt to exclude plaintiffs loss from coverage. The provision only applies if the insured “during the Policy Period . . . shall become aware of any occurrence which may subsequently give rise to a claim being made” (emphasis added). It does not by its terms exclude a claim of which the insured had become aware prior to the effective date of the policy (cf. Fogelson v Home Ins. Co., 129 AD2d 508, 509 [1987] [explicitly excluding “any acts or omissions occurring prior to the effective date of this policy if the Insured at the effective date knew or could have reasonably foreseen that such acts or omissions might be expected to be the basis of a claim or suit”]). “To negate coverage by virtue of an exclusion, an insurer must establish that the exclusion is stated in clear and unmistakable language, is subject to no other reasonable interpretation, and applies in the particular case” (Continental *51Cas. Co. v Rapid-American Corp., 80 NY2d 640, 652 [1993]). The notice of claim provision is not an exclusion, does not apply by its express language and is therefore subject to a contrary interpretation.
Accordingly, the order and judgment (one paper) of the Supreme Court, New York County (Michael D. Stallman, J.), entered February 23, 2007, which confirmed a Referee’s report finding coverage under the subject policy and awarded damages in favor of plaintiff insured and against defendant, should be affirmed, without costs.
. Counsel also commenced a 1996 action in Bronx Supreme Court and a 1999 action in Federal District Court for the Southern District of New York.
. In fact, several actions were commenced asserting most of the grounds mentioned in the letter. The merit of the various causes of action was never judicially determined since the parties entered into a stipulation resolving the litigation.
. A federal lawsuit was brought by the union alleging deficiencies in plaintiff’s contribution to various union funds. It was discontinued with prejudice by stipulation dated August 4, 1993 in favor of alternative dispute resolution.