UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 15)

[Rule 13d-101]

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a)

AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a)

REATA PHARMACEUTICALS, INC.

(Name of Issuer)

CLASS A COMMON STOCK, $.001 PAR VALUE

(Title of Class of Securities)

75615P 103

(CUSIP Number)

WILLIAM E. ROSE

C/O CARDINAL INVESTMENT COMPANY, INC.

4215 WEST LOVERS LANE, SUITE 200

DALLAS, TEXAS 75209

(214) 871-6809

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

September 26, 2023

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. ☐

Note. Schedules filed in paper format shall include a signed original and five copes of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

*	The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


1		NAMES OF REPORTING PERSONS William E. Rose
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) PF, AF
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION United States


1		NAMES OF REPORTING PERSONS Evelyn P. Rose
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION United States


1		NAMES OF REPORTING PERSONS Evelyn P. Rose Fidelity SEP IRA
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS Evelyn Potter Rose Survivor’s Trust
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS The Rose Family Foundation
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS Charles Henry Rose 2001 Trust
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS John William Rose 2002 Trust
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS Edward Alexander Rose 1999 Trust
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS Charles E. Gale
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) PF, OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION United States


1		NAMES OF REPORTING PERSONS Charles E. Gale Fidelity Rollover IRA
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS Montrose Investments I, L.P.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) WC
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas


1		NAMES OF REPORTING PERSONS Montrose Investments GP, LLC
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a): ☐ (b): ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (see instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Texas

This Amendment No. 15 to Schedule 13D (this “Amendment”) relates to the Class A common stock, par value $0.001 per share (the “Class A Common Stock”), of Reata Pharmaceuticals, Inc., a Delaware corporation (the “Issuer”) and amends and supplements the statement on Schedule 13D originally filed by Mr. Rose on June 6, 2016, as amended by that certain Amendment No. 1 to Schedule 13D filed on August 19, 2016, as amended by that certain Amendment No. 2 to Schedule 13D filed on December 7, 2016, as amended by that certain Amendment No. 3 to Schedule 13D filed on January 3, 2017, as amended by that certain Amendment No. 4 to Schedule 13D filed on March 3, 2017, as amended by that certain Amendment No. 5 to Schedule 13D filed on July 12, 2017, as amended by that certain Amendment No. 6 to Schedule 13D filed on August 2, 2017, as amended by that certain Amendment No. 7 to Schedule 13D filed on December 8, 2017, as amended by that certain Amendment No. 8 to Schedule 13D filed on July 31, 2018, as amended by that certain Amendment No. 9 to Schedule 13D filed on November 14, 2018, as amended by that certain Amendment No. 10 to Schedule 13D filed on November 20, 2019, as amended by that certain Amendment No. 11 to Schedule 13D filed on December 9, 2020, as amended by that certain Amendment No. 12 to Schedule 13D filed on July 31, 2023, as amended by that certain Amendment No. 13 to Schedule 13D filed on August 24, 2023, as amended by that certain Amendment No. 14 to Schedule 13D filed on September 19, 2023 (as amended, the “Prior Schedule 13D”). The filing of this Amendment No. 15 represents the final amendment to the Prior Schedule 13D and constitutes an exit filing for the Reporting Persons.

Except as otherwise specified in this Amendment, all items left blank remain unchanged in all material respects and any items that are reported are deemed to amend and restate the corresponding items in the Prior Schedule 13D. Unless otherwise indicated, all capitalized terms used herein but not defined herein shall have the same meanings ascribed to them in the Prior Schedule 13D.

ITEM 4.

PURPOSE OF TRANSACTION.

Item 4 of the Prior Schedule 13D is hereby amended and supplemented by adding the following:

On September 26, 2023, the Issuer consummated the Merger, pursuant to which each share of Reata Common Stock owned by the Reporting Persons and that was issued and outstanding immediately prior to the Effective Time was automatically canceled and extinguished and automatically converted into the right to receive $172.50 in cash (the “Merger Consideration”), without interest and subject to any applicable withholding taxes. In addition, (i) each outstanding Reata stock option, whether vested or unvested, was automatically canceled and terminated and converted into the right to receive an amount in cash, without interest, equal to the product of (A) the number of shares of Reata Common Stock underlying such option immediately prior to the Effective Time multiplied by (B) the amount, if any, by which the Merger Consideration exceeds the exercise price per share of such option, and (ii) each outstanding Reata restricted stock unit (“RSU”) was automatically canceled and terminated and converted into the right to receive an amount in cash, without interest, equal to the product of (A) the number of shares of Reata Common Stock underlying such RSU immediately prior to the Effective Time multiplied by (B) the Merger Consideration, in each case, subject to any applicable withholding taxes.

ITEM 5.

INTEREST IN SECURITIES OF ISSUER.

Item 5 of the Prior Schedule 13D is hereby amended and restated as follows:

(a) As of the closing of the Merger on September 26, 2023, each of the Reporting Persons may have been deemed to have beneficial ownership of 0 shares of Reata Common Stock.

(b) As of the closing of the Merger on September 26, 2023, each of the Reporting Persons may have been deemed to share the power to vote and direct the disposition of 0 shares of Reata Common Stock, which represented beneficial ownership of 0% of the shares of Reata Common Stock.

(c) The following transactions in Class A Common Stock were effected in the sixty days prior to the filing of this Schedule 13D:


Date of Transaction	Amount of Securities Involved	Nature of Transaction	Price Per Share	Where and How Effected
8/23/2023	500,000	Disposition	N/A	Gift by the Survivor’s Trust to the Rose Foundation
9/15/2023	29,000	Disposition	N/A	Gift by the Survivor’s Trust to the 1999 Trust
9/15/2023	29,000	Disposition	N/A	Gift by the Survivor’s Trust to the 2001 Trust
9/15/2023	29,000	Disposition	N/A	Gift by the Survivor’s Trust to the 2002 Trust
9/15/2023	29,000	Disposition	N/A	Gift by the Survivor’s Trust to a family trust
9/15/2023	29,000	Disposition	N/A	Gift by the Survivor’s Trust to a family trust

(d) The right to receive dividends from, and proceeds from the sale of, the shares of Class A Common Stock and Class B Common Stock held of record and/or beneficially owned by Montrose LP, and Montrose GP is governed by their respective limited partnership agreements and limited liability regulations, as applicable, of each of such entities, and such dividends or proceeds may be distributed with respect to numerous general and limited partnership or membership interests.

(e) As of September 26, 2023, the Reporting Persons ceased to be beneficial owners of more than five percent of the shares of Reata Common Stock. The filing of this Amendment No. 15 represents the final amendment to the Prior Schedule 13D and constitutes an exit filing for each of the Reporting Persons.

SIGNATURE

NUMBER OF

SHARES BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

0

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

0

REATA PHARMACEUTICALS INC SC 13D/A