OPINION
Gagik Urutyan (“Urutyan”) challenges his conviction for bank fraud, conspiracy to commit bank fraud, and aggravated identity theft. 1 Urutyan’s sole claim on appeal is that the district court deprived him of *681 his Sixth Amendment right to counsel by disqualifying one of his attorneys. Because the district court did not abuse its discretion in concluding that continued representation by the attorney in question posed a serious potential for conflict of interest, we affirm.
I.
Urutyan was convicted of participation in a bank fraud scheme that involved the theft of personal identity information. The evidence adduced at trial reflects the following sequence of events. In August 2006, Urutyan took a job at a gas station in Mechanicsville, Virginia, in order to gain access to the gas station’s Verifone Pin Pad 2000, the device on which customers swipe their debit cards and enter their pin numbers. Urutyan was able to compromise the device and use it to steal the debit card and pin numbers of hundreds of customers. On December 12, 2006, Urutyan quit his job at the gas station and, along with at least five coconspirators, utilized the stolen data to conduct fraudulent withdrawals from ATMs in Virginia, Maryland, Delaware, Pennsylvania, and New Jersey. Over a sixteen-day period, Urutyan and his coconspirators stole more than $600,000 from the accounts of more than 500 victims, all of whom had used their debit cards at the Mechanicsville gas station. The stolen money was wired to recipients in Russia and Armenia.
Urutyan was arrested on January 12, 2007, and a federal public defender was appointed to represent him. On February 6, 2007, Urutyan replaced his appointed counsel with attorney Elliot Bender. On March 7, 2007, William Graysen, a California attorney, was admitted pro hac vice to represent Urutyan.
On June 5, 2007, a federal grand jury returned a second superseding indictment naming Urutyan and five coconspirators. Urutyan was charged with one count of conspiracy to commit bank fraud in violation of 18 U.S.C. §§ 1344 and 1349, two counts of bank fraud in violation of 18 U.S.C. § 1344, and two counts of aggravаted identity theft in violation of 18 U.S.C. § 1028A.
On August 2, 2007, the government sent a letter to Graysen asking for information about his fee arrangement with Urutyan and the source of funds for Urutyan’s representation. Graysen responded that he was retained on or about February 1, 2007, with a fee of $25,000. JA at 1022. Gray-sen said the fee was paid in cash by a man named David who declined to give his last name, phone number, or address. Id. Graysen said that there was no written fee agreement and that, rather than deposit the cash in any bank acсount, he kept it for “personal use.” Id. Graysen said that he intended to include the income on his tax return and to report receipt of the cash with the Internal Revenue Service on or before January 31, 2008 (approximately one year after receipt). Id. 2
On August 24, 2007, the government filed a Motion for Conflict of Interest Inquiry to determine whether Graysen was being paid by a third party to represent Urutyan. In support of its motion, the government provided transcripts of several telephone conversations between Urutyan and a female coconspirator who had not yet been arrested at the time of the call, but who later became a codefendant. The calls had been recorded January 22, 2007, and were translated from Russian. During one call, the codefendant told Urutyan, *682 “Well, they said to write you and let you know that you have a lawyer.... Someone from California.” JA at 965. In another call, Urutyan asked, “So what, is it an expensive lawyer? ... More than forty?” JA at 980. The codefendant replied, “Yes. It will be even more than that.” Id. And, in yet another call, the codefendant said she “gave it all to them ... [a]nd that they will sort of pay for the lawyer ... they will give it back to you and the remains will be paid to the lawyer.” JA at 978.
The district court held a hearing on September 17, 2007, to determine whether Graysen could continue as counsel for Urutyan. In addition to the foregoing facts, the district court heard evidence that, although Graysen had previously stated his intention to file a Form 8300 with the IRS, he failed timely to do so. It also emerged that David paid Graysen an additional $60,000 in cash to secure representation for three of Urutyan’s codefendants. Graysen said he used the money to hire separate counsel for the codefendants at a cost of $18,000 each and kept a $6,000 referral fee for himself.
Graysen offered several explanations for the somewhat unusual nature of the arrangements. Graysen said that David, like Urutyan, was Armenian and had raised the monеy from family and friends. Gray-sen suggested that it was not uncommon for members of the Armenian community to use only their first names when “dealing with the law, civil or criminal.” JA at 997. Regarding his failure to deposit the initial $25,000 in a bank account, 3 Graysen argued that he was not required to deposit the cash in a bank account because, under California’s so-called “true retainer” rule, 4 the cash constituted a fee earned upon receipt. JA at 1044. Regarding his failure timely to file a Form 8300 with the IRS, Graysen said he was mistaken аbout the applicable deadline. And when asked by the district court why there had been no written retainer agreement with David, Graysen replied, “I have an explanation for that, too. Where two Armenians trust each other, or two people, one being Armenian and one being American, trust each other, there is no need for a retainer. It is something of an insult. They believe a man’s word is his bond.” JA at 1043.
During the hearing, the government informed the district court that Graysen was a “subject” of its ongoing criminal investigation. Although Graysen had not been indicted, the government argued that Graysen’s status as a “subject” of investigation created a potential conflict of interest separate from any conflict arising from Graysen’s being paid by a third party.
Based on this evidence, the district court disqualified Graysen as counsel on the ground that his continued representation of Urutyan would pose “a serious potential conflict based on two grounds[:] (1) the great likelihood that Mr. Graysen was paid by a third рarty who is a member of the alleged criminal enterprise and (2) the *683 Government’s characterization of Mr. Graysen as a subject in their investigation.” JA at 1070.
With respect to the third-party payment arrangement, the district court explained that the recorded telephone conversations “strongly indicate that Mr. Graysen was paid with proceeds illegally gained by a member of the alleged fraud conspiracy.” JA at 1071. Further, the district court found that the “facts that Mr. Graysen did not deposit the $25,000 ... nоr file the appropriate IRS forms and that ‘David’ refuses to give his last name all support the inference that David is a member of the alleged fraud scheme and that the cash received by Mr. Graysen is the fruit of the alleged illegal activity.” JA at 1071. The district court reasoned that “not only is it possible that Mr. Graysen is acting as an agent of a third party who has interests which are potentially in conflict with those of his client, but this fee arrangement may also discourage Urutyan from considering a plеa because more than likely a co-conspirator has paid his legal fees.” JA at 1072. Further, the district court noted the possibility that “the Government may choose to establish the fraud conspiracy by showing the payment of $85,000 in cash to Mr. Graysen, which would result in Mr. Graysen becoming a potential witness against his client.” Id.
With respect to Graysen’s having been characterized as a “subject” of the government’s ongoing investigation, the district court noted the potential conflict of interest рosed by an attorney who is distracted from providing effective representation by “his concern to avoid his own incrimination.” JA at 1072-73 (citation omitted). The district court then evaluated the evidence, reasoning that “Mr. Graysen’s extensive interaction with David, the strong likelihood that the $25,000 Mr. Graysen received was proceeds from the alleged fraudulent scheme, and Mr. Graysen’s complete failure to deposit the funds and file the appropriate IRS forms are sufficient to support thе Government’s identification of Mr. Graysen as a subject in their investigation.” JA at 1075.
Graysen was thus disqualified, and Urutyan went to trial, still represented by Elliot Bender. 5 Urutyan was convicted by a jury on all counts. Judgment was entered against him on January 22, 2008. Urutyan filed a notice of appeal with the district court March 4, 2008. The notice was not timely. Appellate Rule 4(b)(1)(A) imposes a ten-day deadline on the filing of a notice of appeal in criminal cases, and Urutyan never requested an extension of that deadlinе. Prior to oral argument, the government expressly waived any objection based on the timeliness of Urutyan’s notice of appeal.
Urutyan’s sole argument on appeal is that his Sixth Amendment right to counsel was violated when the district court disqualified attorney William Graysen from representing him.
II.
We first consider whether we have subject-matter jurisdiction with respect to this appeal. Urutyan’s notice of appeal was untimely under Federal Rule of Appellate Procedure 4(b)(1)(A), which requires that “[i]n a criminal case, a defendant’s notice of appeal must be filed in the district court within ten days after ... the entry of either the judgment or the order being appealed.” Fed. RApp. P. 4(b)(1)(A).
*684
Urutyan’s judgment of conviction was entered on January 22, 2008, and his notice of appeal was not received by the district court until March 4, 2008, more than ten days later.
6
The government has expressly waived any objection on timeliness grounds. Nevertheless, we are obliged to satisfy ourselves of subject-matter jurisdiction, even where the parties concede it.
Bender v. Williamsport Area Sch. Dist.,
The Supreme Court in three recent decisions has clarified when a party’s failure to comply with a filing deadline deprives a lower federal court of subject-matter jurisdiction. In
Kontrick v. Ryan,
the Court held that a party’s failure to comply with a filing deadline in the Bankruptcy Rules did not deprive the bankruptcy court of subject-matter jurisdiction.
The
Kontrick
Court was careful to address an apparent inconsistency with prior cases such as
United States v. Robinson,
In
Eberhart v. United States,
the Court applied
Kontrick
to reverse a Seventh Circuit decision that held that a criminal defendant’s failure to meet a filing deadline under the Federal Rules of Criminal Procedure deprived the district court of subject-matter jurisdiction.
Acknowledging, as the
Kontrick
Court had, that prior cases like
Robinson
had characterized court-prescribed time deadlines as “mandatory and jurisdictional,” the
Eberhart
Court again lamented the “imprecision” of the earlier use of the term “jurisdictional” to describe time prescriptions that, however inflexible and unalterаble, nevertheless do not affect the subject-matter jurisdiction of lower federal courts.
Id.
at 18,
Most recently, the jurisdictional nature of
statutory
time constraints was reaffirmed in
Bowles v. Russell,
Here, Urutyan failed to comply with Appellate Rule 4(b), which sets filing deadlines for appeals in criminal cases. Like the Bankruptcy Rules at issue in
Kontrick
and the Federal Rules of Criminal Procedure at issue in
Eberhart,
Appellate Rule 4(b) is a court-prescribed, procedural rule. But, unlike Rule 4(a), which was at issue in
Bowles,
the rule is not backstopped by any federal statutory deadline. Therefore, in light of the Suрreme Court’s holding that “[i]t is axiomatic that court-prescribed rules of practice and procedure, as opposed to statutory time limits, do not create or withdraw federal jurisdiction,”
Kontrick,
We are cognizant that, like many federal courts in the years preceding the Supreme Court’s clarifying decisions in
Kontrick, Eberhart,
and
Bowles,
this court has been
*686
“less than meticulous” in our use of the term “jurisdictional” to describe timeliness requirements.
Kontrick,
Therefore, in light of Kontrick, Eberhart, and Bowles, we are satisfied that Urutyan’s failure to comply with the non-statutory time limitations of Rule 4(b) does not divest this court of subject-matter jurisdiction over his appeal. 8
III.
Having satisfied ourselves that we have subject-matter jurisdiction over this appeal, we now turn to Urutyan’s sole contention: that his Sixth Amendment right to counsel was denied when the district court disqualified one of his retained attorneys on conflict-of-interest grounds.
9
We review for abuse of discretion the district court’s decision to disqualify a defendant’s counsel of choice.
United States v. Williams,
In
Wheat v. United States,
the Supreme Court explained that “[wjhile the right to select and be represented by one’s preferred attorney is comprehended by the Sixth Amendment, the essential aim of the Amendment is to guarantee an effective advocate for each criminal defendant rather than to ensure that a defendant will inexorably be represented by the lawyer whom he prefers.”
In evaluating a district court’s exercise of discretion, we are mindful that “[t]he likelihood and dimensions of nascent conflicts of interest are notoriously hard to predict.”
Id.
at 162,
Here, the district court disqualified Graysen based оn “a serious potential conflict” arising from “the great likelihood that Mr. Graysen was paid by a third party who is a member of the alleged criminal enterprise.”
10
JA at 1070. Certainly, such an arrangement, if it existed, would create a serious potential for conflicts of interest. In
Wood v. Georgia,
the Supreme Court remarked on the “inherent dangers that arise when a criminal defendant is represented by a lawyer hired and paid by a third party, particularly when the third party is the operator of the alleged criminal enterprise.”
The only remaining question is whether there was a sufficient evidentiary basis from which to conclude that Graysen was hired and paid by a member of the alleged criminal conspiracy. We conclude that there was. The record shows that a codefendant informed Urutyan by telephone that “they said to write you and let you know that you have a lawyer ... someone from California” and that she “gave it all to them ... [and] they will sort of pay for *688 the lawyer ... they will give it back to you and the remains will be paid to the lawyer.” JA at 978. Graysen, a California lawyer, informed the district court that he was hired less than two weeks after the telephone conversations took place by a man who identified himself only as “David” and refused to provide a last name, address, or phone number. Graysen stated that David paid him $25,000 in cash to represent Urutyan and gave him an additional $60,000 in cash to hire representation for Urutyan’s three codefendants. The district court also considered evidence of Graysen’s questionable behavior, including his failure to deposit the $25,000 in a bank account, his failure timely to report receipt of the cash to the IRS, and his failure to enter a written retainer agreement. We agree with the district court that the telephone conversations “strongly indicate that Mr. Graysen was paid with proceeds illegally gained by a member of the alleged fraud conspiracy,” and that the dubious circumstances of the payment arrangement “all support the inference that David is a member of the alleged fraud scheme.” JA at 1071.
Having concluded that the district court had a sufficient evidentiary basis from which to conclude that Urutyan’s lawyer was hired and paid by a member of the alleged criminal conspiracy, and having further determined that such an arrangement posed a serious potential for conflict of interest, we hold that the district court did not abuse its discretion in disqualifying Graysen as counsel.
IV.
For the foregoing reasons, the decision below is
AFFIRMED.
Notes
. Although Urutyan's notice of appeal was not timely filed under Federal Rule of Appellate Procedure 4(b), the government has waived any objections on this ground. As discussed below, we conclude that Urutyan's failure to comply with Rule 4(b) does not deprive this court of subject-matter jurisdiction.
. IRS Form 8300, which is used to report cash payments over $10,000 received in a trade or business, generally must be filed within fifteen days of the date the cash was received. See 26 U.S.C. § 60501; IRS Form 8300.
. As the district court observed, Rule 4-100(A) of the California Rules of Professional Conduct requires that "[a]ll funds received or held for the benefit of clients by a member of a law firm, including advances for costs and expenses, shall be deposited in one or more identifiable bank accounts.”
.
See generally Baranowski v. State Bar,
. Although Graysen paid Bender’s fees, the district court did not disqualify Bender as counsel for Urutyan.
. Although Appellate Rule 4(b)(4) authorizes a district court to extend the deadline up to thirty additional days "[u]pon a finding of excusable neglect or good cause,” Fed. R.App. P. 4(b)(4), Urutyan never sought such an extension and the district court never granted one.
. Every other circuit to address the question
post-Kontrick
has come to the same conclusion.
See United States v. Mitchell,
. This court’s decision in
Brickwood Contractors, Inc. v. Datanet Engineering, Inc.,
. Although no written waiver of conflict of interest appears in the record, Urutyan asserts that he "had indicated his willingness to waive any potential future conflict of interest." Appellant's Br. at 13.
. The district court also identified a separate potential conflict based on Graysen's status as a “subject” of the government’s ongoing investigation. Because we conclude that there was sufficient evidence for the district court to infer that Graysen was being paid by a coconspirator, and because such an arrangement would create a serious potential conflict of interest, we need not address this separate potential conflict.
. In
Wood,
the defendants, who faced charges of distributing obscenity materials, were represented by a lawyer who was hired and paid by the defendants' employer, the operator of an adult bookstore and theater.
