Was Rainbolt’s BANF share sale under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not checked, and no footnote states that the 8,506-share sale of BancFirst (BANF) stock was made under a Rule 10b5-1 or other pre-arranged trading plan.

BancFirst director Rainbolt sells 8,506 shares

Q: What insider transaction did BANF director David E. Rainbolt report?

David E. Rainbolt reported an indirect sale of 8,506 BancFirst (BANF) common shares on 2026-08-13 at $115.00 per share through the David and Kim Rainbolt Foundation. The foundation’s reported post-transaction balance is 0 shares.

Q: How many BANF shares did Rainbolt sell and at what price?

Rainbolt reported selling 8,506 shares of BancFirst (BANF) common stock at $115.00 per share. The transaction is coded as a sale in the Form 4 data and is described as occurring in an open market or private transaction.

Q: How are Rainbolt’s BANF shares held according to the Form 4?

Rainbolt’s BancFirst (BANF) holdings are reported through multiple forms of ownership, including the David and Kim Rainbolt Foundation, a spouse’s revocable trust, the David E. Rainbolt Trust, and BF Bank Partners, LP, where he is general partner.

BancFirst Corp. director and 10% owner David E. Rainbolt reported an indirect sale of 8,506 shares of Common Stock on 2026-08-13 at $115.00 per share, through the David and Kim Rainbolt Foundation, leaving that foundation with 0 shares.

Filing Impact

(Very High)

Filing Sentiment

(Negative)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

BancFirst Corp. director and 10% owner David E. Rainbolt reported an indirect sale of 8,506 shares of Common Stock on 2026-08-13 at $115.00 per share, through the David and Kim Rainbolt Foundation, leaving that foundation with 0 shares. He continues to report 10,000 shares of Common Stock held indirectly through his spouse’s revocable trust, along with additional direct and trust- and partnership-related holdings referenced in the footnotes.

Insights

Analyzing...

Insider Trade Summary

Net Seller: 8,506 shares

Net Sell 10 txns

Insider RAINBOLT DAVID E

Role Director, 10% Owner

Sold 8,506 shs ($978K)

Type	Security	Shares	Price	Value
Sale	Common Stock	8,506	$115.00	$978K
holding	Common Stock ^F1	--	--	--
holding	Common Stock ^F2	--	--	--
holding	Common Stock ^F3	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 0 shares (Indirect, David and Kim Rainbolt Foundation); Common Stock — 4,756,445 shares (Direct); Common Stock — 10,000 shares (Indirect, By Spouse-Kim)

Footnotes (3)

F1. Shares held in David E. Rainbolt Trust U/A Amended and Restated December 14, 2017
F2. Held under: Dana Kim Rainbolt Revocable Trust
F3. Shares held at BF Bank Partners, LP. David E. Rainbolt is General Partner

Key Figures

Shares sold: 8,506 shares Sale price per share: $115.00 Net shares bought/sold: -8,506 shares +1 more

4 metrics

Shares sold 8,506 shares Indirect sale of BancFirst Common Stock on 2026-08-13

Sale price per share $115.00 Price per share for the 8,506-share sale

Net shares bought/sold -8,506 shares Net insider trading activity in this Form 4

Spouse trust holdings 10,000 shares Indirect BancFirst Common Stock held via spouse’s revocable trust

Key Terms

indirect ownership, Revocable Trust, General Partner, Form 4

4 terms

indirect ownership financial

"Shares reported as indirectly owned through the David and Kim Rainbolt Foundation"

Revocable Trust financial

"Held under: Dana Kim Rainbolt Revocable Trust"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

General Partner financial

"Shares held at BF Bank Partners, LP. David E. Rainbolt is General Partner"

A general partner is the person or firm that runs an investment partnership and legally represents it — they make the day-to-day decisions, choose which assets to buy or sell, and are responsible for the partnership’s obligations. Investors care because the general partner’s judgment, risk-taking and fee and profit-sharing arrangements determine both the potential returns and the level of exposure to losses; think of the GP as the ship’s captain whose skill and honesty shape the voyage’s outcome.

Form 4 regulatory

"Insider ownership changes are reported on SEC Form 4"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did BANF director David E. Rainbolt report?

David E. Rainbolt reported an indirect sale of 8,506 BancFirst (BANF) common shares on 2026-08-13 at $115.00 per share through the David and Kim Rainbolt Foundation. The foundation’s reported post-transaction balance is 0 shares.

How many BANF shares did Rainbolt sell and at what price?

Rainbolt reported selling 8,506 shares of BancFirst (BANF) common stock at $115.00 per share. The transaction is coded as a sale in the Form 4 data and is described as occurring in an open market or private transaction.

What BancFirst (BANF) holdings does Rainbolt report after this sale?

Following the reported sale, the David and Kim Rainbolt Foundation shows 0 shares, while Rainbolt continues to report 10,000 shares of BancFirst common stock held indirectly via his spouse’s revocable trust, plus additional direct and entity-related positions described in the footnotes.

How are Rainbolt’s BANF shares held according to the Form 4?

Rainbolt’s BancFirst (BANF) holdings are reported through multiple forms of ownership, including the David and Kim Rainbolt Foundation, a spouse’s revocable trust, the David E. Rainbolt Trust, and BF Bank Partners, LP, where he is general partner.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/13/2026 - 10:55 AM Accepted by SEC EDGAR 08/13/2026 - 10:54 AM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

RAINBOLT DAVID E

(Last)

(First)

(Middle)

100 N. BROADWAY AVE.

(Street)

OKLAHOMA CITY

OKLAHOMA

73102

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BANCFIRST CORP /OK/ [ BANF ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/13/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/13/2026		S		8,506	D	$115	0	I	David and Kim Rainbolt Foundation
Common Stock								73,395	D⁽¹⁾
Common Stock								10,000	I	By Spouse-Kim⁽²⁾
Common Stock								4,040,777	D⁽³⁾
Common Stock								4,000	D
Common Stock								200,000	D
Common Stock								200,000	D
Common Stock								200,000	D
Common Stock								38,085	D
Common Stock								188	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Shares held in David E. Rainbolt Trust U/A Amended and Restated December 14, 2017

2. Held under: Dana Kim Rainbolt Revocable Trust

3. Shares held at BF Bank Partners, LP. David E. Rainbolt is General Partner

Remarks:

	/s/ By POA from David E Rainbolt	08/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR