# EDGAR Filing Document

**Accession Number:** 0001069308
**File Stem:** 0001193125-23-080470
**Filing Date:** 2023-3
**Character Count:** 22416
**Document Hash:** afa29581373a28d896432ca2af50c4a2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-080470.hdr.sgml**: 20230327

**ACCESSION NUMBER**: 0001193125-23-080470

**CONFORMED SUBMISSION TYPE**: S-8

**PUBLIC DOCUMENT COUNT**: 5

**FILED AS OF DATE**: 20230327

**DATE AS OF CHANGE**: 20230327

**EFFECTIVENESS DATE**: 20230327

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Acer Therapeutics Inc.
- **CENTRAL INDEX KEY:** 0001069308
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 320426967
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-270868
- **FILM NUMBER:** 23764745

**BUSINESS ADDRESS:**
- **STREET 1:** ONE GATEWAY CENTER (300 WASHINGTON ST.)
- **STREET 2:** SUITE 356
- **CITY:** NEWTON
- **STATE:** MA
- **ZIP:** 02458
- **BUSINESS PHONE:** (844) 902-6100

**MAIL ADDRESS:**
- **STREET 1:** ONE GATEWAY CENTER (300 WASHINGTON ST.)
- **STREET 2:** SUITE 356
- **CITY:** NEWTON
- **STATE:** MA
- **ZIP:** 02458

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Opexa Therapeutics, Inc.
- **DATE OF NAME CHANGE:** 20060616

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PharmaFrontiers Corp.
- **DATE OF NAME CHANGE:** 20051011

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PHARMAFRONTIERS CORP
- **DATE OF NAME CHANGE:** 20040816

**As filed with the Securities and Exchange Commission on March 27, 2023** 

**Registration No. 333-** 

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**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

------

**FORM S-8** 

**REGISTRATION STATEMENT** 

***Under***

***THE SECURITIES ACT OF 1933***

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## ACER THERAPEUTICS INC.
**(Exact name of registrant as specified in its charter)** 

------

---

| | |
|:---|:---|
| **Delaware** | **32-0426967** |
| **(State or other jurisdiction of**<br> **incorporation or organization)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

---

| | |
|:---|:---|
| **One Gateway Center, Suite 356**<br> **300 Washington Street, Newton, MA** | **02458** |
| **(Address of principal executive offices)** | **(Zip Code)** |

---

**Acer Therapeutics Inc. 2018 Stock Incentive Plan** 

**(Full title of the plan)** 

**Chris Schelling** 

**President and Chief Executive Officer** 

**Acer Therapeutics Inc.** 

**One Gateway Center, Suite 356, 300 Washington Street** 

**Newton MA 02458** 

**(Name and address agent for service)** 

**(844) 902-6100** 

**(Telephone number, including area code, of agent for service)** 

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***Copy to:***

**Mike Hird** 

**Christina F. Pearson** 

**Pillsbury Winthrop Shaw Pittman LLP** 

**11682 El Camino Real, Suite 200** 

**San Diego, California 92130** 

**(858) 509-4000** 

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Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

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| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | ☐ | Accelerated filer | ☐ |
| Non-accelerated filer | ☑ | Smaller reporting company | ☑ |
|  |  | Emerging growth company | ☐ |

---

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

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**The Registration Statement shall become effective upon filing in accordance with Rule 462 under the Securities Act.** 

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**PART I** 

**INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS** 

**General Instruction E Information** 

This Registration Statement is being filed for the purpose of increasing the number of securities of the same class as other securities for which a Registration Statement on Form S-8 relating to the same employee benefit plan is effective. The Registrant's Registration Statements on Form S-8 filed with the Securities and Exchange Commission (the "Commission") on [May 15, 2018](http://www.sec.gov/Archives/edgar/data/1069308/000156459018013641/acer-s8.htm) (File No. 333-224942), [March 7, 2019](http://www.sec.gov/Archives/edgar/data/1069308/000119312519067328/d715382ds8.htm) (File No. 333-230133), [March 18, 2020](http://www.sec.gov/Archives/edgar/data/1069308/000119312520077332/d888733ds8.htm) (File No. 333-237265), [March 1, 2021](http://www.sec.gov/Archives/edgar/data/1069308/000119312521063837/d49075ds8.htm) (File No. 333-253742) and [March 3, 2022](http://www.sec.gov/Archives/edgar/data/1069308/000119312522063166/d276950ds8.htm) (File No. 333-263241) excluding reports that the Registrant filed with the Commission that were incorporated into such Registration Statements in order to maintain current information about the Registrant, are hereby incorporated by reference into this Registration Statement pursuant to General Instruction E of Form S-8.

**PART II** 

**INFORMATION REQUIRED IN THE REGISTRATION STATEMENT** 

**Item 3: Incorporation of Documents by Reference** 

The following documents filed by Acer Therapeutics Inc. (the "Registrant") with the Commission are hereby incorporated by reference in this Registration Statement:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Annual Report on Form 10-K for the fiscal year ended December 31,
2022; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Current Reports on Form 8-K filed with the SEC on [January 3, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000156459023000008/acer-8k_20221230.htm) , [January 5, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000156459023000173/acer-8k_20230105.htm) , [January 9, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000156459023000274/acer-8k_20230109.htm) , [January 31, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000119312523019802/d427052d8k.htm) , [February 7, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000119312523026904/d435757d8k.htm) , [February 13, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000156459023001755/acer-8k_20230213.htm) , [March 15, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000156459023003612/acer-8k_20230315.htm) , [March 17, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000156459023003860/acer-8k_20230317.htm) , and [March 22, 2023](http://www.sec.gov/Archives/edgar/data/../../../ix?doc=/Archives/edgar/data/0001069308/000119312523076670/d450883d8k.htm) (each to the extent filed and not furnished); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) the description of the Registrant's common stock contained in [Exhibit 4.1](http://www.sec.gov/Archives/edgar/data/1069308/000156459020011639/acer-ex41_179.htm) to its Annual Report on Form 10-K for the year ended December 31, 2019, together
with any amendment or report filed with the Commission for the purpose of updating such description

In addition, all documents filed by Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, (excluding any portions thereof furnished by the Registrant, including but not limited to information furnished under Item 2.02 and Item 7.01 and any exhibits relating to Item 2.02 or Item 7.01 furnished under Item 9.01 of Form 8-K and any certification required by 18 U.S.C. § 1350), on or after the date of this Registration Statement, prior to the filing of a post-effective amendment which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be a part hereof from the date of filing of such documents.

Any statement contained in this Registration Statement or in a document incorporated by reference in this Registration Statement shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained in this Registration Statement or in any subsequently filed document that is deemed to be incorporated by reference in this Registration Statement modifies or supersedes such statement.

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**Item 8: Exhibits.** 

---

| | |
|:---|:---|
| Exhibit<br>No. | Description |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.1 | [Specimen common stock certificate (incorporated by reference to Exhibit 4.1 to the Registrant's Current Report on Form 8-K filed on May 15, 2018).](http://www.sec.gov/Archives/edgar/data/1069308/000156459018013619/acer-ex41_13.htm) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.1 | [Opinion of Pillsbury Winthrop Shaw Pittman LLP.](d461466dex51.htm) |
| &nbsp;&nbsp;&nbsp;&nbsp;23.1 | [Consent of BDO USA, LLP, independent registered public accounting firm.](d461466dex231.htm) |
| &nbsp;&nbsp;&nbsp;&nbsp;23.2 | [Consent of Pillsbury Winthrop Shaw Pittman LLP (included in Exhibit 5.1).](d461466dex51.htm) |
| &nbsp;&nbsp;&nbsp;&nbsp;24.1 | [Power of Attorney (contained on signature page hereto).](d461466ds8.htm#sig) |
| &nbsp;&nbsp;&nbsp;&nbsp;99.1 | [Acer Therapeutics Inc. 2018 Stock Incentive Plan, as amended and restated as of February 18, 2022 (incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on February 22, 2022).](http://www.sec.gov/Archives/edgar/data/1069308/000156459022005793/acer-ex101_17.htm) |
| &nbsp;&nbsp;&nbsp;&nbsp;99.2 | [Form of Notice of Stock Option Grant and Stock Option Agreement for option awards to be made under the 2018 Stock Incentive Plan (incorporated by reference to Exhibit 10.7 to the Registrant's Annual Report on Form 10-K filed on March 1, 2021).](http://www.sec.gov/Archives/edgar/data/0001069308/000156459021009909/acer-ex107_425.htm) |
| &nbsp;&nbsp;&nbsp;&nbsp;99.3 | [Form of Notice of Restricted Stock Award for awards under the 2018 Stock Incentive Plan (incorporated by reference to Exhibit 10.8 to the Registrant's Annual Report on Form 10-K filed on March 7, 2019).](http://www.sec.gov/Archives/edgar/data/1069308/000156459019006779/acer-ex108_778.htm) |
| 107 | [Filing Fee Table.](d461466dexfilingfees.htm) |

---

**Item 9: Undertakings.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) The undersigned Registrant hereby undertakes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) To reflect in the prospectus any facts or events arising after the effective date of this Registration
Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or
decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of
prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the "Calculation of
Registration Fee" table in the effective Registration Statement; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) To include any material information with respect to the plan of distribution not previously disclosed in the
Registration Statement or any material change to such information in the Registration Statement;

*provided, however*, that clauses (a)(1)(i) and (a)(1)(ii) of this section do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the Registration Statement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial *bona fide* offering thereof.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this Registration Statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial *bona fide* offering thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in the Securities Act, and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

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**SIGNATURES** 

Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized in the city of Newton, state of Massachusetts, on March 27, 2023.

---

| | |
|:---|:---|
| ACER THERAPEUTICS INC. | ACER THERAPEUTICS INC. |
| By | /s/ Chris Schelling |
|  | Chris Schelling |
|  | President and Chief Executive Officer |

---

**POWER OF ATTORNEY** 

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Chris Schelling and Harry S. Palmin, or either of them, as his or her true and lawful attorneys-in-fact and agents, with full powers of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments to this Registration Statement on Form S-8, and to file the same with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents and full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he or she might or could do in person, hereby ratifying and confirming that said attorney-in-fact and agent, or any substitute or resubstitute, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Name** | **Title** | **Date** |
| /s/ Chris Schelling<br> Chris Schelling | President and Chief Executive Officer and Director<br> *(Principal Executive Officer)* | March 27, 2023 |
| /s/ Harry S. Palmin<br> Harry S. Palmin | Chief Financial Officer<br> *(Principal Financial and Accounting Officer)* | March 27, 2023 |
| /s/ Jason Amello<br> Jason Amello | Director | March 27, 2023 |
| /s/ Steven J. Aselage<br> Steven J. Aselage | Chairman of the Board | March 27, 2023 |
| /s/ John M. Dunn<br> John M. Dunn | Director | March 27, 2023 |
| /s/ Michelle Griffin<br> Michelle Griffin | Director | March 27, 2023 |

---

## Exhibit 5.1

**<u>Exhibit 5.1</u>**![LOGO](g461466g0328002047402.jpg)

Pillsbury Winthrop Shaw Pittman LLP

Houston \| London \| Los Angeles \| New York \| Northern Virginia \| Orange County \| Sacramento \| San Diego \| San Diego North County \| San Francisco \| Shanghai \| Silicon Valley \| Tokyo \| Washington, DC

March 27, 2023

Acer Therapeutics Inc.

One Gateway Center, Suite 351

300 Washington Street

Newton, MA 02458

Re: Registration Statement on Form S-8

Ladies and Gentlemen:

We are acting as counsel for Acer Therapeutics Inc., a Delaware corporation (the "Company"), in connection with the Registration Statement on Form S-8 (the "Registration Statement") relating to the registration under the Securities Act of 1933 (the "Act") of 784,971 shares of the Company's common stock, $0.0001 par value per share (the "Shares"), issuable pursuant to the Company's 2018 Stock Incentive Plan (the "Plan").

We have reviewed and are familiar with such corporate proceedings and other matters as we have deemed relevant or necessary for the opinions expressed in this letter. Based upon the foregoing, we are of the opinion that the Shares have been duly authorized and, when issued and sold in accordance with the Plan, will be validly issued, fully paid and nonassessable. The opinions set forth in this letter are limited to the General Corporation Law of the State of Delaware, as in effect on the date hereof.

We hereby consent to the filing of this opinion letter as Exhibit 5.1 to the Registration Statement. In giving this consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Securities and Exchange Commission promulgated thereunder.

Very truly yours,

/s/ Pillsbury Winthrop Shaw Pittman LLP

## Exhibit 23.1

**<u>Exhibit 23.1</u>**

<u>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</u> 

Acer Therapeutics Inc.

Newton, Massachusetts

We hereby consent to the incorporation by reference in the Prospectus constituting a part of this Registration Statement on Form S-8 of our report dated March 27, 2023, relating to the financial statements of Acer Therapeutics Inc. appearing in the Company's Annual Report on Form 10-K for the year ended December 31, 2022. Our report contains an explanatory paragraph regarding the Company's ability to continue as a going concern.

/s/ BDO USA, LLP

Boston, Massachusetts

March 27, 2023

## Ex-Filing

**<u>Exhibit 107</u>** 

**Calculation of Filing Fee Tables** 

**S-8** 

(Form Type)

**Acer Therapeutics Inc.** 

(Exact Name of Registrant as Specified in its Charter)

<u>Table 1: Newly Registered Securities</u> 

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| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Security<br>Type** | **Security<br>Class**<br> **Title** | **Fee<br>Calculation<br>Rule** | **Amount<br>Registered (1)** | **Proposed<br>Maximum<br>Offering<br>Price Per<br>Unit (2)** | **Maximum<br>Aggregate<br>Offering**<br> **Price** | **Fee**<br> **Rate** | **Amount of<br>Registration Fee** |
| &nbsp;&nbsp;&nbsp;Fees to be Paid | Equity | Common<br>Stock,<br>$0.0001<br>par value<br>per share | 457(h),<br>457(c) | 784971 | $0.74 | $580878.54 | 0.0001102 | $64.01 |
|  | **Total Offering Amounts** | **Total Offering Amounts** | **Total Offering Amounts** | **Total Offering Amounts** |  | $580878.54 |  |  |
|  | **Total Fee Offsets** | **Total Fee Offsets** | **Total Fee Offsets** | **Total Fee Offsets** |  |  |  |  |
|  | **Net Fee Due** | **Net Fee Due** | **Net Fee Due** | **Net Fee Due** |  |  |  | $64.01 |

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<sup>(1)</sup> Pursuant to Rule 416(a) under the Securities Act of 1933 (the "Securities Act"), this Registration Statement also covers an indeterminate number of additional shares of common stock to be offered or sold pursuant to the above-named plan that may be issued as a result of the anti-dilution and other adjustment provisions therein by reason of certain corporate transactions or events, including any stock dividend, stock split, recapitalization or other similar transaction effected without the receipt of consideration which results in an increase in the number of the registrant's outstanding shares of common stock. 

<sup>(2)</sup> Computed in accordance with Rules 457(c) and (h) under the Securities Act, solely for the purpose of calculating the registration fee, based on the average of the high and low prices of the common stock as reported on the Nasdaq Capital Market on March 22, 2023.