James Mayfield brought a qui tam action under the False Claims Act, 31 U.S.C. § 3729 (2000). On a motion for summary judgment, the district court concluded that (1) Mayfield was barred by the doctrine of res judicata from bringing the majority of his claims against Lockheed, and (2) the court lacked subject matter jurisdiction pursuant to the “public disclosure” provisions of the False Claims Act to consider the rest of Mayfield’s claims against Lockheed.
In determining that Mayfield did not qualify as an “original source” of the information publicly disclosed in his prior state court lawsuit, the district court aligned itself with a minority of the circuits interpreting the original source exception. As a matter of first impression for this court, we choose instead to follow the majority interpretation. We thus vacate the judgment of the district court and remand for findings under this test. We further hold that Mayfield’s prior state court lawsuit did not bar him from bringing the present claims under the False Claims Act.
I.
STATEMENT OF THE FACTS AND PROCEDURAL HISTORY
From November 1989 until his termination in March 1995, James Mayfield was *349 employed with Lockheed Martin Engineering & Sciences Company (“Lockheed”). From January 1994 until this termination, Mayfield worked with Lockheed as its project specialist and was responsible for, among other things, overseeing the contents, preparation, execution and delivery of National Aeronautics and Space Administration (“NASA”) Form 533 reports.
Pursuant to the Engineering, Test and Analysis Contract (“ETA Contract”) between Lockheed and NASA, Lockheed was required to file one version of the NASA Form 533 report — the 533M report — with NASA on a monthly basis and another version — the 533Q report — with NASA on a quarterly basis. Essentially, the NASA Form 533 reports provided a basis for reporting and evaluating Lockheed’s costs and expenses under the ETA Contract. The ETA Contract explicitly provided that payment of fees to Lockheed under the contract was contingent upon compliance with contractual provisions controlling Lockheed’s reporting of accurate cost overruns and cost at completion figures.
A. The State Court Action
On February 17, 1995, Mayfield filed a wrongful discharge suit in state court, alleging that Lockheed wrongfully terminated his employment in retaliation for internally inquiring into whether an act he was required to perform was illegal.
As alleged in Mayfield’s first amended petition, in December 1994, Mayfield became aware (through his supervisor, Ben Carroll) that Lockheed was knowingly failing to report excessive costs and anticipated cost overruns under the ETA Contract as required by the compliance provisions of the contract. After Carroll told May-field that the budgets being used to complete the NASA Form 533 reports for NASA understated the future costs of operations, Mayfield began to inquire into the legality of this conduct. Mayfield involved more of his supervisors and management level employees in the matter, but, as alleged, soon became “the victim of blatant retaliation.”
In August 1996, the state district court granted summary judgment in favor of Lockheed. Final judgment against Mayfield was subsequently affirmed by the state court of appeals.
See Mayfield v. Lockheed Eng’g & Scis. Co.,
B. The Federal Action
On April 24, 2000, Mayfield filed a second suit against Lockheed in federal court pursuant to the qui tarn, provisions of the False Claims Act, 31 U.S.C. §§ 3729-33 (“FCA”). 1
Mayfield alleged in his first amended complaint that Lockheed knowingly failed to report excessive costs and anticipated cost overruns as required by the compliance provisions of the ETA Contract and, indeed, knew that it could not perform in accordance with the costs specified in the initial bid to NASA for the ETA Contract but knowingly submitted a false bid for the contract anyway.
On February 13, 2002, the district court granted Lockheed’s motion for summary judgment.
United States ex rel. Mayfield v. Lockheed Martin Eng’g & Scis. Co.,
Mayfield timely filed a notice of appeal, requesting review of both aspects of this final judgment.
II.
STANDARD OF REVIEW
By its terms, the “public disclosure” bar is jurisdictional. Other circuit courts have specifically held that “[i]n a
qui tam
suit brought under the FCA, the jurisdictional issue of ‘public disclosure’ clearly arises out of the same statute that creates the cause of action .. Thus, a challenge under the FCA jurisdictional bar is necessarily intertwined with the merits” and should be resolved pursuant to either Federal Rule of Civil Procedure 12(b)(6) or 56.
See, e.g., United States ex rel. Ramseyer v. Century Healthcare Corp.,
The district court basically followed this procedure here. It styled Lockheed’s challenge to the court’s subject matter jurisdiction as a summary judgment motion and, presumably, utilized this standard. However, instead of first considering the “public disclosure” bar question (which goes to the subject matter jurisdiction of the court), it first considered Lockheed’s affirmative defense of
res judicata.
We believe the jurisdictional bar should have been considered by the district court before it moved to the merits of Lockheed’s affirmative defense.
United States ex rel. Fed. Recovery Servs., Inc. v. Crescent City E.M.S.,
III.
ANALYSIS OF THE PUBLIC DISCLOSURE BAR
A Presentation of the Disputed Issue — Whether Mayfield is the “Original Source” of Information
As we have discussed the procedure and the historical underpinnings of the
qui tam
provisions of the FCA in prior opinions, we need not repeat them here.
See Riley v. St. Luke’s Episcopal Hosp.,
The FCA, the 1863 Civil War statute under which these suits are permitted, has been amended only twice, once in 1943 and, more recently, in 1986 by the Grass-ley Amendments.
Id.
In 1943, interpreting the
qui tam
provisions as then written, the Supreme Court stated that a private plaintiff might bring a
qui tam
action even though his knowledge of fraud was gained second-hand from a government criminal indictment.
See United States ex rel. Marcus v. Hess,
In response, in 1986, Congress amended the Act (to its current form). Specifically, it repealed the “government knowledge” jurisdictional bar and replaced it with the “public disclosure” bar.
See United States ex rel. Rabushka v. Crane Co.,
Under § 3730(e)(4)(A), the jurisdictional provision for qui tam actions under the FCA now provides that:
No court shall have jurisdiction over an action under this section based upon the public disclosure of allegations or transactions in a criminal, civil, or administrative hearing, in a congressional, administrative, or Government Accounting Office report, hearing, audit, or investigation, or from the news media, unless the action is brought by the Attorney General or the person bringing the action is an original source of the information.
*352 31 U.S.C. § 3730(e)(4)(A) (2000). In the related subsection immediately following this bar, the statute further defines an “original source” as:
[A]n individual who has direct and independent knowledge of the information on which the allegations are based and has voluntarily provided the information to the Government before filing an action under this section which is based on the information.
Id. § 3730(e)(4)(B).
In
Federal Recovery Services, Inc.,
we drew from the plain language of § 3730(e)(4) to set forth the three questions to be asked in a § 3730 jurisdictional inquiry as: (1) whether there has been a “public disclosure” of allegations or transactions, (2) whether the
qui tam
action is “based upon” such publicly disclosed allegations, and (3) if so, whether the relator is the “original source” of the information.
Fed. Recovery Servs., Inc.,
Here, Mayfield does not dispute that Mayfield I served as a “public disclosure” of the information alleged in May-field II, nor does he challenge the finding that the allegations in this case are “based upon” the information disclosed in Mayfield I. 2 Instead, Mayfield contends that as the “original source” of the information, he is saved from the jurisdictional bar. The question before us on appeal thus turns on the statutory construction of the “original source” exception.
B. The Parameters of the “Original Source” Exception
The statutory construction of the “original source” exception is the subject of much disagreement amongst the courts of appeals that have addressed it. The exception explicitly requires the satisfaction of a two-part test: (1) the relator must demonstrate that he or she has “direct and independent knowledge of the information on which the allegations are based” and (2) the relator must demonstrate that he or she has “voluntarily provided the information to the Government before filing” his or her qui tam action. 31 U.S.C. § 3730(e)(4)(B).
Here, the district court found that: Mayfield clearly does not have direct knowledge of conduct occurring at Lockheed after he filed his state court action because he was laid off from Lockheed before that suit was filed. As such, Mayfield is not an “original source” with respect to any wrongful conduct occurring after the filing of his prior lawsuit.
Mayfield II,
A full understanding of the distinct definitions of “direct” knowledge and “independent” knowledge in the “original source” definition requires an analysis of the entire phrase “direct and independent knowledge of the information on which the allegations are based.” The courts of appeals are currently split regarding whether the phrase “the information on which the allegations are based” refers to information on which the allegations in the
qui tam
relator’s complaint are based or information on which the allegations in the public disclosure are based. The Fourth, Sixth, Eighth and D.C. Circuits have read “information” in subsection (B) of the “original source” definition in tandem with the term “information” in subsection (A) of the “public disclosure” bar immediately preceding the “original source” definition. This reading logically leads them to conclude that “information” in subsection (B) refers to the information on which the publicly disclosed allegations are based rather than the information contained in the relator’s
qui tam
complaint.
See Minn. Ass’n of Nurse Anesthetists,
In contrast, the Third, Ninth and Tenth Circuits have construed “the information” in the phrase “the information on which the allegations are based” to refer to the information contained in the
qui tam
complaint filed by the relator rather than the information contained in the public disclosure.
See United States ex rel. Hafter v. Spectrum Emergency Care, Inc.,
Based on the district court’s holding that it lacked jurisdiction because May-field did not have “direct and independent knowledge” of each separate NASA Form 533 submission claimed to constitute a false claim in the Mayfield II complaint, the district court apparently assumed the “direct and independent knowledge” requirement was tied to the “information” contained in the qui tam complaint rather than the “information” contained in the publicly disclosed material. In so assuming, it, without citation, followed the holdings of the Third, Ninth and Tenth Circuits. We disagree with this interpretation of § 3730(e)(4)(B).
Looking at the “public disclosure” bar under (e)(4)(A) and the “original source” definition under (e)(4)(B) together, it makes sense that the first element of the “original source” exception is satisfied if an individual has “direct and independent knowledge” of the “information” on which the allegations in the public disclosure are based. We see no logic in interpreting the word “information” in subparagraph (A) to refer to information publicly disclosed and then interpreting “information” in subpar-agraph (B) — a subparagraph clearly intended to define a term identified in sub-paragraph (A) — to refer to each false claim alleged in the relator’s
qui tam
complaint. This construction fails to harmonize the subparagraphs of § 3730(e)(4).
See also Atl. Cleaners & Dyers, Inc. v. United States,
[T]he fact that sub-paragraph (B) refers to “the information on which the allegations are based” confirms that the only possible reference of the word “information” in sub-paragraph (B) is to the information publicly disclosed — the exact same reference of the word in sub-paragraph (A).
Id. at 1352 (emphasis added).
As further support that this is the construction intended by Congress, we recognize that those courts which define “information” to refer to allegations contained in the
qui tam
complaint have difficulty distinguishing between the terms “direct” and “independent” — two discrete and necessary concepts under the “original source” definition.
See United States ex rel. Dick v. Long Island Lighting Co.,
In contrast, those courts that define “information” to refer to information publicly disclosed do not encounter as much resistance in formulating distinct definitions for the two separate terms “direct” and “independent.”
See, e.g., Findley,
As Mayfield is responsible for filing the publicly disclosed information in May-field I, it is beyond dispute that dismissal on the basis that his knowledge is not “independent” of the public disclosure as that term is defined in § 3730(e)(4)(B) would have been in error. However, we believe that remand is appropriate to allow the district court an opportunity to make factual findings regarding whether May-field also satisfies the “direct” knowledge requirement based on the construction of the statute cited above. To aid the district court in this endeavor, prudence dictates some discussion of the “direct” knowledge requirement.
The courts of appeals have used varying formulations to define the term “direct.”
See, e.g., Minn. Ass’n of Nurse Anesthetists,
We interpret the term “direct” by its plain meaning as knowledge derived from the source without interruption or gained by the relator’s own efforts rather than learned second-hand through the efforts of others. Webster’s New International DiCtionary 640 (3d ed.1961). In so defining, we note that Congress plainly and intentionally used the phrase
“an
original source” rather than
“the
original source” to craft the savings clause. ■ 31 U.S.C. § 3730(e)(4)(B). Thus, for a court in this circuit to have jurisdiction pursuant to this exception, it is not charged with the duty of finding “the” single one true whis-tleblower.
See Stinson,
We thus remand for the district court to make factual .findings regarding the “direct” knowledge requirement of the first element.
IV.
ANALYSIS OF THE CLAIM PRECLU-SIVE EFFECT OF MAYFIELD I ON MAYFIELD II
In additioh to finding that Mayfield did not qualify as an “original source” of information regarding claims submitted by Lockheed after he was terminated, the district court held that the doctrine of res judicata (claim preclusion) barred May-field from relitigating any claims arising out of conduct complained of in his prior state court action. As stated, we see it beneficial to remand this case for factual findings regarding the “direct” knowledge requirement. However, in the interest of *357 judicial efficiency, we now address the district court’s conclusion regarding Lockheed’s affirmative defense.
Assuming without deciding that the district court would find subject matter jurisdiction present on remand, we disagree with the district court’s determination that Mayfield I precludes Mayfield from raising his qui tam claims in Mayfield II.
When a federal court is asked to give claim preclusive effect to a state court judgment, the federal court must determine the preclusiveness of that state court judgment according to the principles of claim preclusion of the state from which the judgment was rendered.
See Semtek Int’l Inc. v. Lockheed Martin Corp.,
A. The Doctrine of Claim Preclusion under Texas Law
In Texas, “[r]es judicata or claim preclusion prevents the relitigation of a claim or cause of action that has been finally adjudicated, as well as related matters that, with the use of diligence, should have been litigated in the prior suit.”
Barr v. Resolution Trust Corp.,
B. Application of the Factors
Here, Mayfield does not contest the satisfaction of the first element — that a prior final judgment on the merits by a court of competent jurisdiction was rendered. However, he maintains that the district court erred in holding, in a footnote, that “Mayfield and Lockheed are the only two parties before the Court” and that because the government elected not to intervene, “the United States is
not
a party to this action.”
Mayfield II,
(1) Identity of Parties
In Texas, the “‘identity of parties’ [element] requires that both parties to the current litigation be parties to the prior litigation or in privity with parties to the prior litigation.”
Jones,
The district court’s statement that the United States is
not
a party in interest before the court is simply incorrect. As we stated in
Searcy,
“the United States is a real party in interest even if it does not control the False Claims Act suit.”
Sear-
*358
cy,
However, it would also be incorrect for us to state that Mayfield is not
a
party in interest in both actions
(Mayfield I
and
Mayfield II).
Where an FCA suit is initiated by a private person, as here, the text of the statute explicitly states that although the suit is “brought in the name of the Government,” the action is brought
“for the person
and for the Government.” 31 U.S.C. § 3730(b)(1) (emphasis added);
see also Russell,
Mayfield brings this action on behalf of the government at his own expense, 31 U.S.C. § 3730(f), by way of partial assignment that enables him to recover up to 30 percent of the proceeds recovered for the government.
Stevens,
(2) The Same Cause of Action
For
Mayfield I
to preclude Mayfield from raising claims against Lockheed in
Mayfield II
under Texas’s doctrine of claim preclusion, Lockheed must additionally prove an identity of claims between the two suits. To determine whether the same “claim” is involved in two actions, Texas courts employ the modern transactional test of the Restatement (Second) of Judgments, under which a judgment in an earlier suit precludes a second action by the parties and their privies not only on
*359
matters actually litigated, but also on causes of action or defenses which arise out of the same “subject matter” and which might have been litigated in the first suit.
Getty Oil,
The critical issue in determining whether the two actions arise out of the same “subject matter” is whether they are based on the “same nucleus of operative fact.”
Jones,
While there is factual overlap between those facts alleged in
Mayfield I
and those facts alleged in
Mayfield II,
we do not think the wrongful termination claim brought by Mayfield in his individual capacity in
Mayfield I,
and the FCA claims brought by Mayfield in his capacity as a relator on behalf of the United States here would form a convenient trial unit for purposes of claim preclusion under Texas law. As demonstrated from the Texas court of appeals’ opinion in
Mayfield I,
the subject matter of the state court suit revolved around the central question whether a certain exception to Texas’s doctrine of at-will employment should be extended to situations where an employee is allegedly terminated for inquiring into whether an act he is required to perform is illegal and, if so, whether Mayfield was terminated for so inquiring.
Mayfield I,
Further, as between Mayfield I and Mayfield II, the remedies sought and the measure of recovery for Mayfield are completely different. In Mayfield I, May-field sought general damages and lost wages, as well as mental anguish and exemplary damages, all in his personal capacity. In Mayfield II, Mayfieid, as relator, sought set statutory penalties under the FCA and pre- and post-judgment interest. Evidence related to Mayfield’s job performance record, qualifications, future earning capacity and personal damages have absolutely nothing to do with proof necessary for the FCA claims alleged in Mayfield II or for the damages sought. Moreover, as stated, in qui tarn actions, the largest portion of any recovery (at least 70%) goes to the government, not Mayfield. Finally, Mayfield’s motivation *360 in bringing his wrongful discharge suit in Mayfield I is different from his motivation for bringing a qui tam suit in Mayfield II. In Mayfield I, he wished to be compensated or made whole following what he saw as a wrongful discharge that was personal. In contrast, in this case, Mayfield sues to recover from Lockheed on behalf of the government and in the name of the government for alleged fraud on the government through Lockheed’s false submissions to NASA;
In sum, while the factual underpinnings of each suit are certainly related, we do not see convenience in trying the two cases together, especially given the procedural requirements related to filing a
qui tam
case under seal in order to give the government an opportunity to' intervene, 31 U.S.C. § 3730(b)(1), and the likely continued involvement of the government in the
qui tam
suit.
See id.
§ 3730(b)(4)(B). This case and the relation it has to May-field’s state law claim for wrongful discharge in an at-will employment state cannot easily be compared to those cases (cited by Lockheed in support of its assertion that
Mayfield I
and
Mayfield II
arise from the same subject matter) that involve relators asserting both
qui tam
and retaliation claims under the retaliation provisions
of the FCA. See, e.g., Ragsdale v. Rubbermaid, Inc.,
CONCLUSION
We VACATE the judgment of the district court and REMAND for further proceedings consistent with this opinion.
Notes
. In. accordance with 31 U.S.C. § 3730(b)(2), Mayfield filed his complaint under seal and served a copy on the United States Department of Justice. On February 22, 2001, the Department of Justice notified the district court of its decision to decline to intervene in the case; Mayfield thereafter proceeded as the qui tam relator.
. Mayfield does generally argue that the jurisdictional bar
is
inapplicable here because he is the one who made the public disclosure in the first place. However,
Federal Recovery Services
discusses the public disclosure bar in the context of a case where the information was disclosed by individuals who filed an initial state court action before filing, as rela-tors, their federal
qui tam
action in the name of their newly filed corporation.
. Our interpretation of the jurisdictional bar does not release the relator from the requirement that he plead all false claim allegations in his
qui tam
complaint with particularity as interpreted by our case law.
See, e.g., United States ex rel. Russell v. Epic Healthcare Mgmt. Group,
. A close read of the
Hindo
opinion reveals support for Mayfield rather than Lockheed. There, the plaintiff medical professor first brought an unsuccessful state court suit for state retaliatory discharge against the defendant university.
Hindo,
