DECISION AND ORDER ON.TRUSTEE’S MOTION TO AMEND THE CAPTION, AND MOTION OF DIANE CURRIER,.,AS EXECUTOR OF THE ESTATE OF RICHARD FLOOR (DECEASED), TO DISMISS
ROBERT E. GERBER; UNITED STATES BANKRUPTCY JUDGE:
In late-December 2007, Basell AF S.C.A, (“Basell”), a Luxembourg entity controlled by Leonard Blavatnik (“Blavatnik”),, acquired Lyondell Chemical Company (“Lyondell”), a Delaware corporation headquartered in Houston — forming a new company after a merger (the “Merger”), LyondellBasell .Industries ÁF S.C.A. (as used by the parties, “LBI,” or here, the “Resulting Company”),1 LyondeE’s parent — by means of a leveraged buyout (“LBO”). The LBO was 100% financed by debt, which, as is typical in LBOs, was secured " 'not by the acquiring company’s assets, but rather by the assets of the [404]*404company to be acquired. Lyondell took on approximately .$21 billion of securéd indebtedness in the LBO, of which $12.5 billion was paid out to Lyondell stockholders. .
In the first week of January 2009, less than 13 months later, a financially strapped Lyondell filed a petition for chapter 11 relief in this Court.2 Lyondell’s unsecured creditors then found themselves behind that $21 billion in secured'debt,, with Lyondell’s .assets effectively having been depleted by payments of $12.5 billion in loan proceeds to stockholders. Lyon-dell’s assets were allegedly also depleted by payments incident to the LBO and the Merger — of approximately $575 million in transaction fees and expenses, and another $337 million in payments to Lyondell officers and employees in change-of control payments and other management benefits.
Those events led to the filing of what are now five adversary proceedings — three against shareholder recipients of that $12.5 billion, one dealing with unrelated issues,3 and one other — this action, which was originally the first of the five — against Blavatnik and companies he controlled; Lyon-dell’s officers and directors; and certain others.
In his Amended Complaint (the “Com-’ plaint”) in this adversary proceeding (brought, like the others, under the umbrella of the jointly administered chapter 11 cases of Lyondell, the Resulting Company and their affiliates (the “Debtors”)), Edward S. Weisfelner (the “Trustee”), the trustee of the LB Litigation Trust (one of two trusts formed to prosecute the Debtors’ claims), asserts a total of 21 claims against the defendants in this action. The 21 claims variously charge breaches of fiduciary duty; the aiding and abetting of those alleged breaches; intentional and constructive fraudulent conveyances, unlawful dividends, and a host of additional bases for recovery under state law, the Bankruptcy Code, and the laws of Luxembourg, under which several of the Basell entities were organized.4 The Complaint also seeks to equitably subordinate defendants’ claims that might otherwise be allowed.
The Trustee’s complaint, in turn, engendered a large number.of motions to dismiss. This is one of several opinions ruling on those motions.5
Here the Court considers the motion of Diane Currier (“Currier”), as Executor of the Estate of Richard Floor, to dismiss the claims asserted against the estate for whom she acts pursuant to Fed.R.Civ.P. 12(b)(2), 12(b)(6), and 25(a). The Trustee opposes Currier’s motion to dismiss and moves, by separate motion, to amend the caption pursuant to Fed.R.Civ.P. 25(a), or in the alternative to extend the time for substitution pursuant to Fed.R.Civ.P. 6(b)(2).
The Court determines that the Trustee’s motion to amend the caption was filed about 23 weeks late. But the Court further determines that the reasons underlying that — delays by Floor’s probate court [405]*405in docketing Currier’s appointment; inaccurate information provided to the Trustee by the probate court; and the withholding of information as to Currier’s appointment by counsel for Currier and Floor — provide more than sufficient basis for finding excusable neglect. The Trustee’s motion.to extend the time to amend the caption is granted, as is the Trustee’s motion to amend the caption itself. Currier’s motion to dismiss, to the extent based on failure by the Trustee to comply with Civil Rule 25(a), is denied.
The Court’s Findings of Fact, Conclusions of Law, and bases for the exercise of its discretion on these motions follow.
Facts
The relevant facts, insofar as they relate to these motions, are undisputed. The original complaint in this adversary proceeding, dated July 22, 2009, named Floor as a defendant. Before the Merger, Floor was a representative of Basell AF GP 5.a.r.l. (a parent of Basell), and became a representative of LBI LyondellBasell Industries AF GP S.a.r.l. (a parent of the Resulting Company) and a member of the supervisory board of the Resulting Company after the Merger.
Floor “died on or about February 18, 2010.”6 On March 8, 2010, about three weeks later, the law firm representing Floor and Currier (“Floor-Currier Counsel”) served and filed a Suggestion of Death notifying the parties of Floor’s death. By order dated April 9, 2010 (but as noted below, not docketed until July 23, 2010), of a Massachusetts probate court (the “Probate Court”), 'Currier was appointed Executor of Floor’s Estate.7 Floor-Currier Counsel acknowledges that it learned that an executor had been appointed sometime before June 7, 20108 — a date of significance for reasons appearing below.9
On or about Juné 10, 2010 — a date after Floor-Currier Counsel knew that an executor had been appointed (but the Trustee’s counsel did not) — a paralegal (the “Paralegal”) from the law firm representing the Trustee was asked to determine if an executor for Floor’s estate had been appointed.10 The Paralegal contacted the Probate Court by phone “at least on July 1, 2010 and July 22,” 2010 and was informed that Currier had not yet been appointed.
On July 2, 2010 (a date by which Floor-Currier Counsel knew that.an executor had been appointed, but the Trustee’s [406]*406counsel did not), the Trustee circulated a draft amended complaint to counsel for defendants, including Floor-Currier Counsel, which draft replaced “Floor” with “The Legal Representative of the Estate of Richard Floor (deceased).”12 Further drafts of the amended complaint, sent to the parties on July 9 and July 22, referenced Currier by name, but not as a defendant in the caption.13 On each of those July 9 and 22 dates, Floor-Currier Counsel, once again, knew that an executor had been appointed, but the Trustee’s counsel did not.
Beginning on July 9 and throughout July 2010, drafts of an amended case management order were circulated among the parties listing “the Estate of Richard Floor” as a member of the “Based. D & 0 Defendant Group.”14 On July'21, 2010, a law firm acting as liaison for the defendants told the Trustee by e-mail that all défendants listed in the amended case management order had 'agreed to its terms.15
On July 23, 2010, the Trustee filed the amended Complaint. Instead of naming, as defendants Floor (who was known to be deceased) or Currier (who the Paralegal had been told, on July 1 and again On July 22, had not yet' been' appointed), the amended Complaint named as a defendant “The Legal' Representative of the Estate of Richard Floor (deceased).”16 On August 2, 2010, the Paralegal learned from a colleague that Currier had been appointed executor for Floor’s estate back on April 9, 2010, but that it “had not been docketed in the system until July 23, 2010.”17
Obviously, what the Paralegal had been told by--the Probate Court on July 1 and July 22 was incorrect, misleading, or both.
On September 24, 2010, Floor-Currier Counsel moved 'to dismiss the Amended Complaint 1 pursuant to Fed.R.Civ.P. 12(b)(2), 12(b)(6), and 25(a). On October 26, 2010, Floor-Courier Counsel consented to a stipulation to further amend the case management order.18 On November 16, 2010, the Trustee filed a motion to substitute the executor Currier pursuant to Fed. R.Civ'.P. 25(a), or in the alternative, to extend the time, for substitution under Fed.R.Civ.P. 6(b)(2).
Discussion
I.
The Applicable Rules and Caselaw
A. Civil Rule %5
Fed.R.Civ.P. 25, applicable in this adversary proceeding by Fed. R; Bankr.P. 7025, provides, in relevant part: ■ '
[i]f a party dies and the claim is not extinguished, the court may order substitution of the proper party. A motion [407]*407for substitution may be made by any party or by the decedent’s successor or representative. If the motion is not made within 90 days after service of a statement noting the death, the, action by or against the decedent must be dismissed.19
But dismissal is not mandatory, despite the Rule’s use of the word “shall,” where the motion is made after the prescribed period.20 “[T]he history of Rule 25 makes clear that the 90-day period was not intended to act as a bar to otherwise meritorious actions.”21 And where there is a showing that failure to act within the 90-day period was the result of excusable neglect, the court has discretion to enlarge the substitution period.22
As the Court’s quotation of Fed.R.Civ.P. 25 makes clear, Civil Rule 25 is silent on what happens when—
• the plaintiff, doesn’t know who to name (or names the defendant’s successor as best he or she can) within the time period prescribed by the Rule, and compliance- with the Rule — at least in the technical sense upon which Currier relies here — is impossible;
• the plaintiffs counsel is given incor- . rect information by a probate court; or . , , .
• the 'defendant’s counsel knows the true facts (and knows of the plaintiffs intention-to proceed against the original defendant’s estate), and elects not-to tell the plaintiffs counsel.23
But these matters can be considered incident to a consideration of excusable neglect, discussed above and below.24 “Excusable neglect is intended and has proven to be quite elastic in its application. In essence it is an equitable concept that must take account of all relevant circumstances of the party’s failure to act within the required time.”25 Excusable neglect doctrine works with .Rule- 25(a)(1) to provide the intended flexibility in enlarging the time for substitution.26
B., Bankruptcy Rule. 9006
Fed. R. Bankr.P. 9006 — applicable in bankruptcy cases (and hence adversary [408]*408proceedings) — applies “in computing any time period specified in these rules, in the Federal Rules of Civil Procedure, !in any local rule or court order or any statute that does not specify a method of computing time.” Thus, like- Civil Rule 6(b), which does likewise in ordinary plenary litigation,27 Bankruptcy Rule 9006 covers the time period specified in Civil Rule 25.28 Bankruptcy Rule 9006(b)(1), captioned “Enlargement,” provides in relevant part, with exceptions not relevant herd: '
[W]hen an act is required or allowed to be done at or within a specified period by these rules or by a notice given thereunder or by order of court, the court for cause shown may at any time in its discretion
(1) with or without “motion or notice order the period enlarged if the request therefor is made before the expiration of the period originally préscribed or as extended by a previous order or
(2) 'on motion made after the expiratión of the specified period permit the act to be done where the failure to act was the result of excusable neglect.29
The Trustee did not request an enlargement of time to move to substitute Currier before the 90-day period under Civil Rule 25(a) expired. Thus the Court must determine the motions under the second clause of Civil Rule ' 9006(b)(1) — on motion and upon1 a showing that “the failure to act was the result of excusable neglect.”
The burden of proof regarding excusable neglect rests with the party seeking to enlarge time.30
C. The Pioneer Factors
Pioneer is the seminal case interpreting Bankruptcy Rule '9006(b)(1) and addressing the meaning' of excusable neglect.31 There, a creditor had failed to [409]*409timely file a proof of claim. Notice of the bar date had taken the unusual form of a “Notice for Meeting of Creditors.” Twenty days after the bar date had passed, the creditor filed his proof of claim, and with it a motion to permit the late filing based on excusable neglect — arguing that he should be permitted to file a late proof of claim because his attorney had suffered a major disruption in his professional life.
The Pioneer Court explained that neglect could be the result of “inadvertence, mistake, or carelessness, as well as by intervening circumstances beyond the party’s control.” To determine whether neglect is excusable, the Pioneer Court held, courts should evaluate “all relevant circumstances surrounding the party’s omission” including “the danger of prejudice to the debtor, the length of the delay and its potential impact on judicial proceedings, the reason for the delay, including whether it was within the reasonable control of the movant, and whether the movant $cted in good faith.”32
After noting no challenges to the creditor’s good faith and “the absence of any danger of prejudice to the debtor or of disruption to efficient judicial administration posed by the late filings,” the Pioneer Court focused' on the reason for delay, explaining:
[W]e give little weight to the fact that counsel was experiencing upheaval in his law'practiee at the time of the bar date. We do, however, consider significant that the notice of the bar date provided by the Bankruptcy Court in this case was outside the ordinary course in bankruptcy cases.33
Because the unusual form of notice provided an adequate reason for delay, and because 'the other factors weighed in the creditor’s favor, the Court found the neglect excusable.34
The Pioneer test has been consistently applied by courts in this Circuit.35
The Pioneer factors are not given equal weight. Because the first, second, and fourth factors “usually weigh in favor of. the party seeking the extension,”.36 the third factor — reason for delay — is “the predominant factor.”37
Notwithstanding increased emphasis on the reason for delay, "the slightest indication of bad faith, prejudice, or adverse impact on the administration of the case” is a reason to find the neglect inexcusable. Keene, -188 B.R. at 908 (discussing factors that the Pioneer Court stated could have plausibly led to a determination that the neglect was inexcusable).
[410]*410The first Pioneer fáctor, danger of prejudice to the nonmoving party, “is a more flexible and-complex concept than, a simple dollar-for-dollar depletion of assets otherwise available for timely filed claims.”38 When analyzing this factor, courts should, also consider “the adverse impact that a late claim may have on the judicial administration of the case.”39
With respect to the second factor, the length of delay and its potential impact on judicial proceedings, the Second Circuit has stated, “neither we nor — as far as our research discloses — any other -court has established a bright-line rule governing when the lateness of a claim will b,e, considered ‘substantial.’ ”40 The length of delay in time is only given meaning by its effect on the administration of the case41
As stated aboye, the third factor, reason for delay, is “the predominant factor.” To satisfy this factor, the proffered reason must have actually caused the neglect.42 In addition, a “failure to follow the clear dictates of a court rule will generally not constitute such excusable neglect.”43
The fourth Pioneer factor is good faith, though “rarely in the decided cases is the absence of good.faith at issue.”44 There is no formal presumption of good faith, but courts have indicated that a record lacking bad faith provides appropriate grounds for a finding of good faith.45
a'
' Application to the Facts Here
On March 8, 2010, Floor-Currier Counsel filed and served the Suggestion of Death. Under the language of Civil Rule 25, that would begin the 90-day period to substitute, a successor for Floor. This period closed on June 7, 2010 — a date by which Floor-Currier- Counsel knew that Currier had been appointed, but the Trustee’s counsel did not. The Trustee’s motion to substitute pursuant to Civil Rule 25(a) was filed on November 16, 2010.
That was 163 days after the, 90-day period had lapsed. Thus, were it not for the potential effect of Bankruptcy Rule 9006, the similar Civil Rule 6(b), and caselaw,46 [411]*411the Trustee’s motion to amend the caption would be untimely, and Currier would be entitled to dismissal.,.
But as noted above, the time to take action under Civil Rule 25, as with other deadlines in adversary proceedings under the umbrella of cases under the Bankruptcy Code, can be extended if requirements under Bankruptcy Rule 9006 or Civil Rule 6(b) are satisfied.47 Thus the Trustee’s action would be timely if, but only if, the requirements of Bankruptcy Rule 9006(b)(1) (or the substantively' identical requirements of Civil Rule 6(b)) are satisfied. That, in turn, rests on the Trustee’s showing that his neglect was excusable, under the standards articulated by Pioneer and its progeny, or the lesser requirements under cases like Thebaud.48
Three of the four Pioneer factors easily tip in the Trustee’s favor.. The first does so because Currier, the “nonmoving party,” would not be prejudiced in- the slightest from the amendment in the caption. She has been represented by the. same- counsel as Floor was, and has been on notice of the claims against Floor (and now her) from either the outset or near outset of this litigation. She has had the opportunity to participate in the litigation since her appointment. And- even if,the Trustee, didn’t know that she -was already appointed and was “the Executrix of the Estate of Richard Floor,”, she did, and her counsel did. , Importantly, a footnote in the later drafts of the amended complaint (and the version ultimately filed) that was delivered to Floor-Currier counsel stated:
Upon information and belief, although not yet formally appointed, Dianne [sic] Currier will be named as the Executrix of the Estate of Richard Floor. It is the intention of the LB Litigation Trust to name as defendant the person who shall be appointed the legal representative of the Estate of Richard Floor.49
Qf course, if the Trustee’s motion were granted, Currier would lose the windfall of a victory without judicial consideration of the claims against her on the, merits; That, however, is not legally cognizable prejudice.50
The second factor also weighs in the Trustee’s favor. Although the length of delay in Pioneer was only 20 days while the length of the delay here is 168 days, the length of the delay must be evaluated in .light of its effect on the administration of the case rather than in absolute terms. Unlike many cases in which a movant seeks an extension of time to file a proof of claim,51 the extension here would have no [412]*412effect whatever on the administration- of the Lyondell bankruptcy cases. Here the Debtors have already confirmed a- plan, and the claims at issue here are being asserted against a-third party, rather than against the bankruptcy estate. In fact, the need to focus on case administration matters was one of the reasons underlying the delay.52 For the- same, reasons that granting the Trustee an extension of time to move to substitute would result in little prejudice to Currier or the .Floor Estate, it also would have little effect on the administration of the litigation in this adversary proceeding.
The fourth factor, good faith, also weighs in the Trustee’s favor. There is no indication that the Trustee acted with b'ad faith. To the contrary, to the extent anyone acted with bad -faith, it was Floor-Currier Counsel, which remained mum on Currier’s formal designation.
Requiring moré' discussion, howevér, is the issue of how the Court should address the remaining factor, the reasons for the delay — in a situation involving a perfect storm of a late filing accompanied by wrong information provided by the Probate Court and the knowledge by the defendant’s counsel of the true facts and its actions in keeping the facts to itself. Here, where the latter two circumstances appear in combination, the Court determines that the neglect in .the Trustee’s delay in changing the defendant from the “Estate of Richard Floor” to “Dianné Currier, as Executrix of the Estate of Richard Floor” was excusable.53
With the benefit of hindsight, we now know that Currier was apparently appointed on April 9, but that fact was unknowable to the public,54 with the appointment not having been docketed.. Floor-Currier Counsel knew by the July 7th 90-day mark that Currier’s appointment was approved (though the record , does not reflect how much before that day it knew), but it failed to advise the Trustee’s counsel, and the Trustee’s counsel did not know that the formal designation had been made. And when the Paralegal inquired on July 1, she was told, by the Probate Court, that Currier had not yet been appointed — possibly, though not clearly, because the appointment had not been docketed. Obviously, what the Paralegal was then told was false, misleading, or both. If the appointment was effective when approved (as contrasted to when it was docketed), one must ask how the public was supposed to know. If the appointment was not effective until it was docketed, one must ask how it would be insufficient for the Trustee to name, as a defendant, “Legal Representative of the Estate of Richard Floor (deceased)” — particularly after advising Currier and Floor-Currier Counsel that:
Upon information and belief, although not yet formally appointed, Dianne [sic] Currier will be named as the Executrix of the Estate of Richard Floor. It is the intention of the LB Litigation Trust to name as defendant the person who shall be appointed the legal representative of the Estate of Richard Floor.
Of course, the Court is aware that when the Paralegal was asked to inquire as to [413]*413Currier’s status, on June 10, the 90-day marked had passed by 3 days, and when she apparently first followed through on the request, on July 1, that was another 21 days after that. But when the Paralegal did inquire, she was told that Currier had not yet been appointed, and she was told the same thing again on July 22. So she was given wrong information twice — at two separate times when Floor-Currier Counsel knew the true facts, and had kept mum. If the Paralegal had inquired on June 6, before the 90-day period had passed, there is no reason to believe that she would have been told the true facts then, when she was given wrong information twice thereafter.
Secondly, while the Court is troubled by Floor-Currier Counsel’s conduct, this is not about imposing sanctions. It is only about determining whether, following Floor-Currier Counsel’s actions, the Trustee’s counsel’s neglect was excusable. The Court finds that it was.
Floor-Currier Counsel (i) stayed mum when told by the Trustee of the Trustee’s belief that Currier was “not yet formally appointed”; (ii) consented to the filing of an amended Complaint naming as a defendant the “Legal Representative of Estate of Richard Floor”; (iii) consented to amendments in the Case Management Order including that estate as a defendant; and (iv) participated in a Court conference at which Floor-Currier Counsel raised no objections as to how the estate was named in the amended Complaint. But Floor-Currier Counsel now contends that Currier should be let out of the litigation because naming her as the “Legal Representative of Estate of Richard Floor” wasn’t good enough. The Court will not reward that gamesmanship. The Court finds the Trustee’s neglect, in light of the Probate Court’s actions, and Floor-Currier Counsel’s conduct, to be excusable.
Currier also seems to argue that faced with all of this, the Trustee should have requested an extension of time before it expired. Best practices would favor such a practice. And if they had been followed, the Trustee’s motion would have been granted in a heartbeat, and the Court would not be called upon to determine whether excusable neglect had been shown. But in the exercise of its discretion, the Court is still of a mind to find the Trustee’s actions to be excusable, given the combination of the circumstances at the Probate Court and Floor-Currier Counsel’s actions in staying mum while continuing to participate in the litigation while time passed. The Court expects better of the counsel appearing before it, and it is not at all pleased with the conduct of Floor-Currier Counsel.55 But once again, the Court is not imposing sanctions, nor even expressing a view as to whether conduct of this character would ever be sanctionable. The Court is ruling only, in the exercise of its discretion — as in Pioneer, where the unusual form of notice provided an adequate reason for the delay, and where there was no indication of any intentional effort to withhold information from the claimant — that the neglect of the Trus[414]*414tee, whose counsel encountered the circumstances described in detail above, is excusable.56
Conclusion
For the foregoing reasons, the Trustee’s miotion to extend time to move to amend the caption is granted, and the caption is hereby amended. Currier’s motions to dismiss (as premised on procedural grounds and Rule 25(a) defects) are denied. The claims asserted in the Complaint against Currier, as the executor to the Floor Estate, remain alive except insofar as they have been dismissed by reason of the Court’s other rulings.
SO ORDERED.
APPENDIX A
[415]*415APPENDIX A*
Count Claim Defendant Parlies
Constructive fraudulent transfer under the Bankruptcy Cods and applicable state law Nell, Limited; AI Chemical Investments LLC; and Leonard Blavatnik
Intentional fraudulent transfer under the Bankruptcy Code and applicable state law Nell, limited; AI Chemical Investments LLC; and Leonard Blavatnik
Constructive fraudulent transfer under the Bankruptcy Code and applicable state law Lyondell Pre-Merger Directors and Lyondell Pre-Merger Officers1
Intentional fraudulent transfer raider the Bankruptcy Code and applicable state law Lyondell Pre-Merger Directors and Lyondell Pre-Merger Officers
Breach of fiduciary duty Lyondell Pre-Merger Directors
Mismanagement and breach of duty under Luxembourg law Leonard Blavatnik2
Toit under Luxembourg law Blavatnik;3 the GP Managers; the Nominees; and the Successors4
[416]*416APPENDIX A*
Count Claim Defendant Parlies
Breach of fiduciary duty Subsidiary Directors5
Avoidance preference under the Bankruptcy Code and applicable state law Access Industries Holdings LLC
10 Equitable subordination under the Bankruptcy Code AI International, S.ii.r.l.
11 Constructive fraudulent transfer under the Bankruptcy Code and applicable state law Nell Limited; Deutsche Bank Securities Inc.; and Perella Weinberg Partners LP
12 Breach of contract Access Industries Holdings LLC; and AI International. S.a.r.l,
13 Illegal dividends or redemption Lyondell Pre-Merger Directors
14 Unlawful distribution and extra-contractual tort under Luxembourg law Leonard Blavatnik; the GP Managers: BI S.a.r.l: Alan Bigman: Alex Blavatnik; Peter Thorén: Simon Baker: and the Nominees
15 Declaratory judgment for characterization of purported loan advances under the Access Revolver as capital contributions Access Industries Holdings LLC; and the Lyondell Post-Merger Directors6
16 Illegal dividends Lyondell Post-Merger Directors '
7T Constructive fraudulent transfer under the Bankruptcy Code and applicable state law Access Industries Holdings LLC
18 Aiding and abetting breach of fiduciary duty under applicable slate law and Luxembourg law Nell Limited; Access Industries Holdings, LLC; Access Industries, Inc.; AI International S.a.r.l; AI Chemical Investments LLC
[417]*417APPENDIX A*
Count Claim Defendant Parties
19 Constructive fraudulent transfer under the Bankruptcy Code B1 S.ii.r.l.
20 Breach of fiduciary duly Dan Smith; T. Kevin DeNicoia; Edward Diueeir. Kerry Galvin; and W. Nonnatt Phillips s '
21 Aiding and abetting breach of fiduciary duty T. Kevin DeNicoia; Edward Dineen; Kerry' Galvin; and W. Norman Phillips
Except as to Count 6, (we m2, infra), counts and claims listed below are based on the amended complaint dated July 23,2010 [Dkt, 3S1J (the "Complaint”), This table does not teilect subsequent dismissal"! uf claims or defendants by stipulation of the parties or by order of the Court.