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Official portrait of Markwayne Mullin

Markwayne Mullin

R Republican · Senator, Oklahoma · Former member
45
Elevated self-dealing
6/6 components have data

Markwayne Mullin (R-OK) served in the U.S. Senate from 2023 until his confirmation to a Trump administration post in March 2026; he previously served in the U.S. House (2013-2023). Public records show his household actively traded individual stocks and bonds, with the senator filing disclosures for more than 70 transactions worth between roughly $1.4 million and tens of millions of dollars, and repeatedly violating the STOCK Act's 45-day disclosure deadline (some filings up to 2.5 years late); his office attributes trading to a third-party manager. At least one trade — a July 2024 purchase of Stride, Inc., an education company — overlapped with his seat on the Senate HELP Committee, drawing conflict-of-interest scrutiny. His net worth grew from roughly $3.5 million (2013) to about $60-66 million by 2026, but reporting attributes this primarily to his family plumbing business and its sale, wealth that largely predates or is independent of his federal office. His leadership PAC (Boots PAC) spent roughly $1.4 million on categories that personally benefit him, including about $170,000 in chartered flights, a private chef, golf and hunting gear, while giving about one-third to other candidates. His campaign funding is heavily concentrated in oil and gas (about $1.3 million career), which correlates with his 2% lifetime League of Conservation Voters score, though no quid pro quo is established.

Public record

In Congress since
2013 · left Mar 23, 2026
Committees
—
Missed votes, 119th Congress
5.5% (40 of 723; median member 1.9%)
Campaign money, 2025–26 cycle
$3.2M raised · 35% from PACs & committees · $1.4M cash on hand FEC ↗

The stock-trading ban

Senate cloture on H.R. 7008, Sep 30, 2026
—
Cosponsored a ban bill
None

H.R. 7008 bans new stock purchases by members, spouses and dependents; it doesn't force sales of existing holdings. The Senate vote was on the version paired with the SAVE Act, which is why no Democrat voted yes. Full breakdown →

Disclosed stock trades

217trades since Jan 2025
126buys
91sells
0filed past 45 days
$5.4M–$14Mdisclosed value range

Most-traded: LRN ×8 · GS ×7 · MTZ ×6 · IRM ×6 · DELL ×6 · CRDO ×6 · COHR ×6 · AIT ×6

TradedFiledOwnerAssetTypeAmount
Feb 25, 2026Mar 10, 2026JointUNH UnitedHealth Group Incorporated Common Stock (DE)Buy$50,001 - $100,000filing ↗
Feb 25, 2026Mar 10, 2026JointAZO AutoZone, Inc. Common StockSell$50,001 - $100,000filing ↗
Feb 25, 2026Mar 10, 2026JointINTU Intuit Inc. - Common StockSell$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointVSEC VSE Corporation - Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointMTZ MasTec, Inc. Common StockSell$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointMPWR Monolithic Power Systems, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointMCK McKesson Corporation Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointLRN Stride, Inc. Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointIRM Iron Mountain Incorporated (Delaware)Common Stock REITSell$1,001 - $15,000filing ↗
Feb 4, 2026Mar 2, 2026JointGS Goldman Sachs Group, Inc. (The) Common StockSell$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointFCFS FirstCash Holdings, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointDELL Dell Technologies Inc. Class C Common StockSell$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointCRS Carpenter Technology Corporation Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointCRDO Credo Technology Group Holding Ltd - Ordinary SharesSell$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointCOHR Coherent Corp. Common StockSell$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointC Citigroup, Inc. Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointAPG APi Group Corporation Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointAMKR Amkor Technology, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Feb 4, 2026Mar 2, 2026JointAIT Applied Industrial Technologies, Inc. Common StockSell$1,001 - $15,000filing ↗
Feb 4, 2026Mar 2, 2026JointADBE Adobe Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 21, 2026Feb 4, 2026JointCOOK CNTY ILL CMNTY CONS SCH DIST NO 015 PALATINE GO BDSPartial sell$1,001 - $15,000filing ↗
Jan 20, 2026Feb 4, 2026JointKENTUCKY ST PPTY & BLDGS COMMN REVS BDSPartial sell$50,001 - $100,000filing ↗
Jan 20, 2026Feb 4, 2026JointNEVADA ST LTD TAX GO CAP IMPT BDSPartial sell$1,001 - $15,000filing ↗
Jan 20, 2026Feb 4, 2026JointALAMOGORDO N MEX MUN SCH DIST NO 001 GO BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointCORSICANA TEX COMBINATION TAX AND REV CTFS OBLIGPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointAUSTIN TEX CTFS OBLIGPartial sell$1,001 - $15,000filing ↗
Jan 20, 2026Feb 4, 2026JointMETROPOLITAN TRANSN AUTH N Y DEDICATED TAX FD GREEN FD BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointWEST PALM BEACH FLA CMNTY REDEV AGY TAX INCREMENT REV REF BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointMASSACHUSETTS ST DEV FIN AGY REV BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointFLORIDA ST DEPT GEN SVCS DIV FACS MGMT REV POOL REV REF BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointCOOK CNTY ILL CMNTY CONS SCH DIST NO 015 PALATINE GO BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointIPS MULTI-SCH BLDG CORP IND UNLTD AD VALOREM PPTY TAX FIRST MTG BDSPartial sell$50,001 - $100,000filing ↗
Jan 20, 2026Feb 4, 2026JointSALEM N H GO BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointFORT LAUDERDALE FLA WTR & SWR REV BDSPartial sell$1,001 - $15,000filing ↗
Jan 20, 2026Feb 4, 2026JointUNIVERSITY HOUSTON TEX UNIV REVS CONSOLIDATED REV AND REF BDSPartial sell$15,001 - $50,000filing ↗
Jan 20, 2026Feb 4, 2026JointMACOMB INTER SCH DIST MICH UNLTD TAX GO BLDG SITE BDSPartial sell$1,001 - $15,000filing ↗
Jan 20, 2026Feb 4, 2026JointCLEAR CREEK TEX INDPT SCH DIST UNLTD TAX REF BDSPartial sell$50,001 - $100,000filing ↗
Jan 20, 2026Feb 4, 2026JointFORT SMITH ARK WTR & SWR REV REF CONSTR BDSPartial sell$50,001 - $100,000filing ↗
Jan 20, 2026Feb 4, 2026JointSEATTLE WASH DRAIN & WASTEWATER REV REF REV BDSPartial sell$50,001 - $100,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseVSEC VSE Corporation - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseMPWR Monolithic Power Systems, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseMCK McKesson Corporation Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseLRN Stride, Inc. Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseFCFS FirstCash Holdings, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseCRS Carpenter Technology Corporation Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseC Citigroup IncBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseAPG APi Group Corporation Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseAMKR Amkor Technology, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026SpouseADBE Adobe Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberVSEC VSE Corporation - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberMPWR Monolithic Power Systems, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberMCK McKesson Corporation Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberLRN Stride, Inc. Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberFCFS FirstCash Holdings, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberCRS Carpenter Technology Corporation Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberC Citigroup IncBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberAPG APi Group Corporation Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberAMKR Amkor Technology, Inc. - Common StockBuy$15,001 - $50,000filing ↗
Jan 5, 2026Feb 4, 2026MemberADBE Adobe Inc. - Common StockBuy$15,001 - $50,000filing ↗
Dec 29, 2025Jan 16, 2026JointCAT Caterpillar, Inc. Common StockBuy$15,001 - $50,000filing ↗

Showing the 60 most recent of 372. Download everything →

Amounts are the ranges members must report, not exact values. The STOCK Act requires a report within 45 days of a trade; "late" counts days past that deadline, measured to the filing date.

How the score breaks down

Stock self-tradinghousehold / spouse
25% weight
72
Household actively traded individual stocks/bonds; Mullin disclosed 70+ transactions worth between $1.4M and tens of millions, with repeated STOCK Act late filings (up to 2.5 years late) by both him and his spouse. At least one trade (Stride, Inc.) overlapped with his HELP Committee oversight of education, raising documented conflict concerns.
Mullin failed to disclose within the 45-day STOCK Act window seven spouse stock purchases (2.5 years late) and three Oklahoma municipal securities (1.5 years late), worth hundreds of thousands of dollars.News reportingnotus.org ↗On Aug. 13 Mullin reported the sale or purchase of more than 70 stocks and bonds worth tens of millions of dollars from 2023-2024; he blew past more disclosure deadlines than any lawmaker tracked, and his office said a third-party firm manages the portfolio.News reportingnotus.org ↗Mullin bought Stride, Inc. (online private-school provider) shares in July 2024, disclosed late in November 2024, while sitting on the Senate HELP Committee that oversees education; ethics experts flagged a potential conflict as Stride held federal contracts.News reportingnewsweek.com ↗
Net-worth enrichment in office
15% weight
22
Net worth rose from ~$3.5M (2013) to ~$11.4M (2018) to roughly $60-66M by 2026, but reporting ties the growth chiefly to his pre-existing family plumbing business and its later sale, plus ranch and real-estate holdings — wealth that largely predates or is independent of his Senate salary rather than tracking office tenure.
OpenSecrets estimated Mullin's net worth at $3,509,021 in 2013 rising to $11,384,012 in 2018, driven by business assets including Mullin Plumbing Inc. and its West Division.Reference databaseopensecrets.org ↗Mullin is worth an estimated $60-66 million, with wealth tied to operating businesses, real estate, ranch land and the apparent sale of his plumbing business to HomeTown Services.News reportinginc.com ↗
Money → action alignmentcorrelation, not proof of any quid-pro-quo
20% weight
52
Correlation, not proof: campaign money is heavily concentrated in oil and gas (~$1.3M career, top donor Devon Energy), which aligns with his consistently pro-fossil-fuel, anti-regulation voting (2% lifetime LCV score). No quid pro quo is asserted or established.
From 2011-2024 the oil and gas industry was Mullin's largest donor at $1.3 million total, with Devon Energy his top contributor ($104,950 from employees and PAC).Reference databaseopensecrets.org ↗Mullin holds a 2% lifetime and 3% 2025 League of Conservation Voters score, with 32 anti-environment votes in 2025, indicating votes aligned with fossil-fuel interests.News reportinglcv.org ↗Lobbyists, the oil and gas industry and health care interests contributed nearly $1 million to Mullin's Senate campaign since 2021.News reportingreadfrontier.org ↗
Campaign-fund personal use
15% weight
60
His leadership PAC, Boots PAC, spent roughly $1.4 million (about two-thirds of disbursements) on categories that personally benefit Mullin — including ~$170K in chartered/private flights, a $10K private chef, golf and hunting gear, limousine rentals, luxury hotels and sporting-event tickets — while giving only about one-third to other candidates. Leadership PACs face looser personal-benefit rules than campaign funds.
Boots PAC spent $169,933 on chartered flights (May 2024-Dec 2025), $10,000 on a private chef, plus golf, hunting and outdoor gear; of $2.7M raised, $703,579 went to candidates and ~$1.4M to other expenses.News reportingreadfrontier.org ↗
Revolving door & family
15% weight
18
Limited evidence: Mullin's former Senate chief of staff has been registered as a lobbyist/foreign agent (a staff-to-lobbyist pipeline indicator), but no public record was found of family members lobbying or contracting tied to his office.
David R. Natonski, Mullin's Senate chief of staff (Aug. 2024-March 2026), has been registered as a lobbyist or foreign agent per LegiStorm records.Reference databaselegistorm.com ↗
Skips the job to fundraise
10% weight
20
Mullin missed 79 of 1,403 roll-call votes (5.6%) from 2013-2026, about double the Senate median of 2.8%. No sourced evidence ties specific missed votes to fundraising events or paid speeches, so the link is unestablished.
From January 2013 to March 2026 Mullin missed 79 of 1,403 roll call votes (5.6%), worse than the 2.8% median for senators serving in March 2026.Reference databasegovtrack.us ↗

Sources behind this score: 7 news reporting · 4 reference database. Score = weighted average of the components that have data; the 0 without sourced evidence are excluded, never counted against the member. Methodology →

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