EASTERLY, Associate Judge:
Mr. Simms appeals from his conviction for assault on a police officer (“APO”) on the ground of prosecutorial vindictiveness. Specifically, Mr. Simms contends that the government, having announced that it was ready to try its case against him, vindictively added an APO charge to a preexisting charge of possession of marijuana after Mr. Simms exercised his right to compulsory process and asked the trial court to enforce a subpoena, thereby prompting the trial court to continue the case. Mr. Simms argues that, under the circumstances, he should have received the benefit of a rebuttable presumption of ■vindictiveness, which would have shifted the burden to the government to explain its decision to add the APO charge. We agree.
We recognize that the Supreme Court and this court have made clear that a defendant cannot make out a claim of pros-ecutorial vindictiveness merely upon a showing that the prosecution filed additional charges after the defendant exercised, pretrial, a constitutionally or statutorily protected right. We acknowledge that pretrial litigation is by its very nature fluid, that jockeying for advantage is the [484]*484norm in our adversarial system,1 and that the government may reasonably reassess its case in the lead-up to trial. But the government’s announcement that it was ready to try Mr. Simms’s case on the scheduled trial date puts this case outside the typical pretrial paradigm. By announcing that it was ready to go to trial, the government communicated that this fluid pretrial period was over. This was an announcement on which Mr. Simms had a right to rely. Based on this announcement and the other accumulation of circumstances detailed below, we conclude Mr. Simms was entitled to a rebuttable presumption of vindictiveness when the government subsequently decided to charge Mr. Simms with APO. Accordingly, we remand to the trial court to give the government an opportunity to provide a benign explanation for its actions or, failing that, to vacate the APO conviction and dismiss this charge.
I. Facts and Procedural History
In the early morning hours of October 15, 2010, appellant, David Simms, was arrested for possession of marijuana and failure to obey a lawful order. Later that same day, Officer Pezzat signed an affidavit detailing the event. In her affidavit, Officer Pezzat stated that she and her partner, Officer Selby, approached Mr. Simms on the 1100 block of Vermont Ave., N.W., after observing him toss what she perceived to be three small bags of marijuana into a nearby tree box. According to Officer Pezzat, Mr. Simms ignored the officers’ orders to stop, and instead continued walking into the unit block of Thomas Circle, N.W. Officer Pezzat repeated the order to stop, and Mr. Simms “again refused and then picked up his speed as if to run.” Both officers “gave chase,” and Officer Pezzat was “able to grab the back of [Mr. Simms’s] t-shirt and coat as he tried to flee, struggle ... and resist.”
On the afternoon of October 15, 2010, Mr. Simms was arraigned and charged with unlawful possession of a controlled substance (marijuana), D.C.Code § 48-904.01(d) (2001). The Office of the Attorney General (“OAG”) declined to file charges for failure to obey a lawful order. At an initial status hearing on November 10, 2010, Mr. Simms elected to go to trial, and the court scheduled a bench trial for January 31, 2011.
On January 31, 2011, the scheduled trial date, the trial court called the case, and asked, “is the government ready?” The government responded unequivocally, “the government is ready, your honor.”2 The defense, however, informed the court that it was not ready to begin trial because the government had not yet provided it with a copy of the DEA-7 reflecting the results of the drug testing. The court passed the case. After recalling the case, the court noted, “the government did announce ready, and counsel had not received the DEA-7 which has been provided now, is the defense now ready to proceed to trial?” Again the defense said it was not ready, because the Department of Homeland Security (“DHS”) had not responded to a subpoena duces tecum for security video [485]*485footage of Vermont Avenue, N.W., the street upon which the DHS is located, for the time of the alleged encounter between Mr. Simms and the police; the defense asked the court to enforce the subpoena.3 The court passed the case again to see if the matter could be quickly resolved. When the court recalled the case again and determined that it could not be, the court informed the government that it would not hold a trial that day. The court then granted a continuance in order to give the government an opportunity to contact the DHS and scheduled a status hearing for February 10, 2011.
On February 4, 2011, four days after the initial trial date, the government informed the defense counsel that the surveillance camera tape had been erased. That same day, the government amended the information to include the additional charge of assaulting a police officer (“APO”) in violation of D.C.Code § 22^05(a) (2001).
On February 28,2011, Mr. Simms filed a motion to dismiss the information for vindictive prosecution. In his motion, Mr. Simms noted that the government had announced that it was ready to try his case on January 31, 2011, before it amended the information to add the APO charge. On April 7, 2001, without holding a hearing or directing a response from the government, the trial judge denied Mr. Simms’s motion. The court ruled that, “the addition of a single charge before trial d[id] not give rise to a realistic likelihood of prosecutorial vindictiveness in this case,” and stated that no other facts led it to believe that the government “vindictively amended the charges against the defendant as retaliation for either defendant’s exercise of compulsory process or his request for a new trial date.”
On April 12, 2011, following a bench trial,4 the trial court granted Mr. Simms’s motion for judgment of acquittal on the unlawful possession charge. The court then considered evidence on the remaining charge and found Mr. Simms guilty of APO “on a resisting or impeding theory.”
II. Standard of Review
The only issue raised by Mr. Simms on appeal is whether the trial court erred in denying his motion to dismiss for vindictive prosecution without acknowledging that the circumstances gave rise to a presumption of vindictiveness that required a response from the government. But before we begin our analysis of this issue, we must address an unresolved question in this jurisdiction: what standard of review to apply.
Both parties agree that whether circumstances give rise to a realistic likelihood of prosecutorial vindictiveness, and thus trigger a rebuttable presumption, is a mixed question of law and fact, but they disagree as to the appropriate standard of review. Mr. Simms argues that our review is de novo because whether a presumption of prosecutorial vindictiveness is warranted is predominantly a question of law. The government urges us to follow the lead of the United States Court of Appeals for the District of Columbia Circuit and to review both the factual and legal findings regarding vindictiveness for clear error. See United States v. Meyer, [486]*486810 F.2d 1242, 1244, reh’g en banc granted, opinion vacated 816 F.2d 695 (1987), and opinion reinstated on reconsideration sub nom. Bartlett ex rel. Neuman v. Bowen, 824 F.2d 1240 (D.C.Cir.1987).
In Davis v. United States, 564 A.2d 31 (D.C.1989) (en banc), we described the different ways courts had historically reviewed mixed questions, observing that they had been either “assigned, sometimes clumsily, either to the ‘clearly erroneous’ or to the ‘de novo’ category”; or the mixed question is “unmixed” so that the factual issue is reviewed under the clearly erroneous standard and the legal issue under the de novo standard. Id. at 36 (quoting United States v. Felder, 548 A.2d 57, 61 (D.C.1988)). We endorsed the “unmixing” approach, thereby “avail[ing] ourselves of the unique operational advantage of the trial judge in making a determination requiring intimate acquaintance with the facts of the particular case as they evolved at trial,” but also “maintaining our own role as primary expositor of the law by applying a sufficiently penetrating measure of review to a trial court decision that, in effect, construes a legal right by denying its remedy.” Id. at 34.
Since Davis, this court has established a practice of “unmixing” mixed questions, and we have consistently applied a dual standard of review when reviewing trial court rulings in criminal cases on issues other than the defendant’s guilt.5 Thus, for example, when we review motions to suppress suggestive identifications,6 motions to suppress on Fourth Amendment grounds,7 motions to suppress statements on Miranda8 or involuntariness grounds,9 conflict of interest claims,10 Batson claims,11 or ineffective assistance of counsel claims,12 we defer to the trial court’s findings of fact and review its conclusions of law de novo.
We see no reason to depart from this established practice when reviewing claims of prosecutorial vindictiveness. In this context as in others, the trial court is in the best position to resolve any factual disputes. But this court is best situated to determine whether a presumption of vindictiveness is warranted “through reasoning, comparison with like cases, and review of a trial court record.” Davis, 564 A.2d at 36. And this court is in the best position to determine ultimately whether the due process goals for the doctrine of vindictive prosecution, discussed below, are being fulfilled.
The D.C. Circuit’s decision in Meyer does not sway our analysis. Meyer is not [487]*487binding on this court. See M.A.P. v. Ryan, 285 A.2d 310, 313 (D.C.1971). The clear error standard of review for vindictiveness claims adopted in that case is out of step not only with our case law, but also with case law from other federal circuits. Indeed, the majority of federal circuits that have addressed the standard of review for claims of prosecutorial vindictiveness review the district court’s factual findings for clear error and its legal rulings de novo. See, e.g., United States v. Johnson, 171 F.3d 139, 140 (2d Cir.1999); United States v. Schoolcraft, 879 F.2d 64, 67 (3d Cir.1989); United States v. Johnson, 91 F.3d 695, 698 (5th Cir.1996); United States v. Bullis, 77 F.3d 1553, 1558 (7th Cir.1996); United States v. Sarracino, 340 F.3d 1148, 1177 (10th Cir.2003).13
Although we conclude that the appropriate standard of review is “mixed,” there are no factual disputes in this case to review for clear error. Thus we are left to review de novo the trial court’s legal ruling that, under the circumstances, Mr. Simms was not entitled to a pretrial presumption of vindictiveness. See Littlejohn v. United States, 705 A.2d 1077, 1082 (D.C.1997) (while the nature of the trial court’s ruling was typically a mixed question of law and fact that should be “unmixed,” because the facts were largely undisputed, the question before the court was predominantly a legal one appropriate for de novo review).
III. Prosecutorial Vindictiveness
A. Establishing Vindictiveness Pretrial
As the Supreme Court acknowledged in United States v. Goodwin, 457 U.S. 368, 102 S.Ct. 2485, 73 L.Ed.2d 74 (1982), and this court reaffirmed in United States v. Mahdi, 777 A.2d 814 (D.C.2001), “[t]o punish a person because he has done what the law plainly allows him to do is a due process violation of the most basic sort.” Id. (quoting Goodwin, 457 U.S. at 372, 102 S.Ct. 2485). Because “[m]otives are complex and difficult to prove,” 457 U.S. at 373, 102 S.Ct. 2485, however, “in certain cases in which the prosecution has taken actions against the defendant after the defendant exercised a protected statutory or constitutional right, the courts have presumed an improper vindictive motive which may warrant the dismissal of the prosecution’s charge.” Mahdi, 777 A.2d at 819. As we observed in Mahdi, the “rationale for the presumption is not grounded on the proposition that actual retaliatory motivation must inevitably exist, rather ... since the fear of such vindictiveness may unconstitutionally deter a defendant’s exercise of his or her rights, ... due process also requires that a defendant be freed of apprehension of such a retaliatory motivation on the part of the prosecutor.” Id. (quoting Blackledge v. Perry, 417 U.S. 21, 28, 94 S.Ct. 2098, 40 L.Ed.2d 628 (1974)) (internal quotation marks omitted). This presumption may be overcome “by objective evidence justifying the prosecutor’s action.” Id.
The Supreme Court’s decision in Goodwin and this court’s decisions in Shiel v. United States, 515 A.2d 405 (D.C.1986), and Mahdi are the most recent decisions explaining how to analyze claims of prose-[488]*488cutorial , vindictiveness raised pretrial. These cases control our analysis.14
The question confronted by the Supreme Court in Goodwin was whether a defendant raising a claim of prosecutorial vindictiveness pretrial should have the benefit of the presumption of vindictiveness developed in the post-trial context in cases where a defendant had exercised a legal right — the right to challenge a conviction — and then faced additional, more serious charges at a new trial. 457 U.S. at 369-70, 102 S.Ct. 2485. The Court noted that because of the potential “severity of such a presumption — which may operate in the absence of any proof of an improper motive and thus may block a legitimate response to criminal conduct” — it had limited the use of a presumption of vindictiveness to “cases in which a reasonable likelihood of vindictiveness exists.” Goodwin, 457 U.S. at 373, 102 S.Ct. 2485. Although the Court held that it was more difficult pretrial to establish the requisite “reasonable likelihood of vindictiveness,” id. at 373, 102 S.Ct. 2485, necessary to trigger the presumption, see id. at 380-84, 102 S.Ct. 2485, and that Goodwin himself had failed to carry this burden, it did not hold that the presumption was unavailable pretrial. It simply held that the presumption should not be “inflexibly” applied in this context. Id. at 381, 102 S.Ct. 2485.
The Court’s determination that a presumption of vindictiveness should not be applied pretrial in Goodwin was inextricably tied to the facts presented. Goodwin had been charged with several misdemeanors arising out of a traffic stop on the Baltimore-Washington Parkway where he had fled from police, striking an officer with his car. Id. at 370, 102 S.Ct. 2485. Goodwin absconded after his arraignment and was not located for three years. Id. After he was taken back into custody, his case was initially assigned to a prosecutor who was detailed from the Department of Justice to try misdemeanor cases and who did not have authority to present cases to the grand jury. Id. at 370-71, 102 S.Ct. 2485. After Goodwin declined a plea offer and demanded a jury trial, his case was transferred to an Assistant United States Attorney (“AUSA”), who reviewed the case and determined that more serious charges were warranted. Id. at 371, 102 S.Ct. 2485. The AUSA obtained a four-count indictment, including one felony count of forcibly assaulting a federal officer. Id. After he was convicted, Goodwin alleged that his indictment on new, more serious charges had been motivated by his request for a jury trial and unsuccessfully moved to set aside the verdict on the ground of prosecutorial vindictiveness. Id.
Reviewing these facts, the Supreme Court held that Goodwin was not entitled to a rebuttable presumption of vindictiveness. The Court’s reasoning was two-fold. First, the Court noted
At this stage of the proceedings, the prosecutor’s assessment of the proper extent of prosecution may not have crystallized. In contrast, once a trial [489]*489begins ... it is much more likely that the State has discovered and assessed all of the information against an accused and has made a determination, on the basis of that information, of the extent to which he should be prosecuted.
Id. at 381, 102 S.Ct. 2485 (emphasis added). Second, the Court observed that “a defendant before trial is expected to invoke procedural rights that inevitably impose some ‘burden’ on the prosecutor.” Id. Given that “[t]he invocation of procedural rights is an integral part of the adversary process in which our criminal justice system operates,” the Court deemed it “unrealistic to assume that a prosecutor’s probable response to such motions is to seek to penalize and to deter.” Id.
On the basis of this analysis, the Court found that the “timing of the prosecutor’s actions in this case suggests that a presumption of prosecutorial vindictiveness is not warranted.” Id. (emphasis added); id. at 382, 102 S.Ct. 2485 (again noting that “a presumption of vindictiveness is not warranted in this case”). In other words, the mere addition of a charge after a defendant was returned to custody after a long hiatus, rejected a plea offer, and opted to exercise his right to a jury trial (prompting reassignment of his case to another prosecutor who had authority to present cases to a grand jury), did not create the requisite “reasonable likelihood of vindictiveness,” id. at 373, 102 S.Ct. 2485, that would warrant the recognition of a rebuttable presumption. Rather it was to be expected that the prosecution in these circumstances might reassess “the extent of the societal interest in prosecution” and determine that additional charges were warranted. Id. at 382, 102 S.Ct. 2485.
This court first had occasion to examine and apply Goodwin in Shiel. In Shiel, demonstrators at the United States Capitol who opted to forgo a trial were permitted to plead guilty to unlawful assembly, whereas protestors who elected to stand trial faced the more serious charge of unlawful entry. 515 A.2d at 410. The latter group challenged their convictions on grounds of prosecutorial vindictiveness. Id. We affirmed, relying on Goodwin, which we held “stands for the proposition that ... no presumption of vindictiveness arises out of an upward modification of charges before trial. Such a modification, without more, proves only an opportunity for vindictiveness, not actual vindictiveness.” Id. at 411 (emphasis added). Looking at the facts of Shiel, we determined that “like the defendant in Goodwin, appellant can point to no more evidence of vindictiveness than the fact that a higher charge was instituted after he insisted on a trial.” Id. We also noted that there were “countervailing indications of a lack of prosecutorial intent to be vindictive,” among them, the fact that the demonstrators had been notified in advance that they would be offered an option to avoid an unlawful entry charge. Id.
Most recently, in United States v. Mahdi, we took the “opportunity to state the basis for the doctrine of vindictive prosecution and to clarify the procedure the court should employ to determine whether a defendant is entitled to relief’ in the pretrial context. 777 A.2d at 818. Referring back to pre-Goodwin precedent, we “h[e]ld that the test laid out in Schiller,15 which refined Wynn,16 most clearly lays out the appro[490]*490priate test for evaluating prosecutorial vindictiveness”:
The appropriate procedure is that, [t]he trial court should, upon motion, review the accumulation of circumstances of record and decide, without more, as a threshold matter whether the allegations as to a prosecutor’s actions give rise to a realistic likelihood of prosecutorial vindictiveness. If ... the examination results in an affirmative finding, the obligation is then on the government to answer or explain the allegations.
Id. at 820 (internal quotation marks omitted). In determining whether the government has met its burden to rebut a presumption of vindictiveness, we said that the trial court should consider “the nature of the case; status of the case, including the fact that a prosecutor should have broader leeway to add charges before an initial trial than in a case where a defendant is being a tried a second time; the nature of the right involved-as to which vindictiveness is alleged; and the nature of the harm involved, including the length of potential incarceration.” Id. at 820-21.
Applying this analysis in Mahdi we held that a pretrial presumption of vindictiveness was warranted where, after a drug charge against the defendant was dismissed and after the defendant filed a civil suit against the police, the government rebrought the previously dismissed drug charge with a newly added simple assault charge. Id. at 821. We ultimately concluded, however, that the claim of vindictiveness failed because the “government provided evidence, credited by the trial court, that aptly rebutted the presumption and showed that there was no actual pros-ecutorial vindictiveness.”17 Id.
We take from Goodwin, Shiel, and Mahdi the following. First, a presumption of vindictiveness is available pretrial. Second, although the fluidity of pretrial proceedings makes it more difficult as a practical matter to demonstrate that a presumption is warranted pretrial, the actual burden to obtain the presumption remains the low hurdle of demonstrating a reasonable likelihood of vindictiveness.18 This hurdle can be overcome with a demonstration of “an accumulation of circumstances”; no direct evidence of retaliatory intent is required. Third, where, as here, the factors in Goodwin motivating defer[491]*491ence to the prosecution pretrial are absent, the reasonable likelihood standard will not be out of reach.
B. Analysis
Under Goodwin, Shiel, and Mahdi, Mr. Simms was entitled to a presumption of vindictiveness upon a showing that there was an accumulation of circumstances giving rise to a reasonable likelihood of vindictive action by the government. We conclude that there was such an accumulation of circumstances in this case. Accordingly, the court should have afforded Mr. Simms the benefit of a rebuttable presumption and directed the government to respond to his motion and justify its actions.
First, the government knew from the date of Mr. Simms’s arrest that there were facts potentially supporting a charge of assault and resisting arrest. These facts were in the sworn affidavit of Officer Pez-zat, dated October 15, 2010. Indeed, Mr. Simms was initially charged with failure to obey an order, but the OAG decided to dismiss this charge. Relatedly, it appears the government developed no new facts between Mr. Simms’s arrest on October 15, 2010, and the amendment of the information. At Mr. Simms’s bench trial on April 12, 2011, the government relied exclusively on Officer Selby’s testimony to establish APO; her account of the incident conformed to Officer Pezzat’s affidavit.
Second, the timing of the amendment is suspect in that the government did not seek to amend the information in the almost four months prior to the first scheduled trial date on January 31, 2011; but after Mr. Simms sought to enforce his subpoena and trial was continued, the government acted swiftly to add the APO charge on February 4, 2011.
Third, there is no indication in the record that the government ever offered Mr. Simms a plea, much less that the amendment was the reasonably anticipated outcome of failed plea negotiations. Cf. Bordenkircher, 434 U.S. at 357, 98 S.Ct. 663. Rather, the record reflects that Mr. Simms announced his intention to go to trial on November 4, 2010, well before the amendment of the information.
Against this backdrop, there is one additional fact that tips the balance for us: the government’s announcement on January 31, 2011, that it was ready to try its case. If there is a moment when one can say that the government’s thoughts about its case have “crystallized,” Goodwin, 457 U.S. at 381, 102 S.Ct. 2485, it must be the one where the government announces to the court that it is ready to begin trial and present its evidence to the fact-finder. Moreover, the government’s announcement that it is ready to try a case is a clear signal that it believes that the back- and-forth of pretrial litigation is over. In other words, the very reasons the Supreme Court determined that the application of a presumption of vindictiveness should be limited pretrial, do not pertain here.19
[492]*492The concern we expressed in Shiel about creating incentives for prosecutors to overcharge cases at the outset, 515 A.2d at 411, likewise has no application. We create no incentive to overcharge where we defer to the government’s own assessment of the readiness of its case. Before the government announces this decision, it retains broad discretion to modify its case and augment the charges against a defendant. Indeed, this is precisely what happened in our pre-Goodwin decision in Washington, 434 A.2d at 395, where the prosecution did not announce it was ready but instead sought a continuance on the day of trial to gain more time to reflect about how the case should properly be charged.20
The government argues that Mr. Simms’s vindictiveness claim fails under Goodwin because it is based on “a mere sequence of pretrial events,” namely, the exercise of a statutory or constitutional right followed by an upward modification of charges. But for the reasons detailed above, we see this case differently.
The government also argues that continuances on the date of trial are commonplace, and that the events of January 31, 2011, should simply be considered a continuation of the normal lead-up to trial. But this argument misses the mark. The relevant inquiry is whether it is commonplace for the government to announce ready for trial and then, after the defense exercises a right and is granted a continuance, to bring additional charges. When asked this question at oral argument, the government could not say that such an upward modification of charges is commonplace. In the absence of such a representation, we presume it is not. The government’s post-ready addition of a charge is not conclusive proof of vindictiveness (Mr. Simms does not bear the burden of proving vindictiveness at this stage). But in combination with the other factors detailed above, it [493]*493was a sufficient foundation for the presumption.
Finally, the government argues that Mr. Simms never alleged that the individual prosecutor had a “personal stake in the outcome of the litigation” or that he possessed an animus toward defendant. Of course it is precisely because this would be virtually impossible for any defendant to prove at the outset that the Supreme Court created a presumption, Goodwin, 457 U.S. at 373, 102 S.Ct. 2485. Moreover, the government’s “personal stake” requirement unduly constricts the inquiry of prosecutorial vindictiveness, which is not limited to the motives of an individual proseeutor and may focus on the motivations of the government as an institution. Cf. Mahdi, 777 A.2d at 821 (presumption of vindictiveness was rebutted where “the government’s decision” to recharge the case was adequately explained).21
IV. Conclusion
Having determined that the trial court erred by failing to give Mr. Simms the benefit of a pretrial presumption of vindictiveness, we conclude that a remand is appropriate. On remand, the government will be given an opportunity to provide a benign explanation for its decision to add the APO charge after it announced ready [494]*494for trial on the possession of marijuana charge. Failing that, the trial court should vacate the APO conviction and dismiss this charge.
So ordered.