# EDGAR Filing Document

**Accession Number:** 0001786205
**File Stem:** 0001193125-23-000861
**Filing Date:** 2023-1
**Character Count:** 20961
**Document Hash:** 4c2930724364092bc6af4cc201193a1d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-000861.hdr.sgml**: 20230103

**ACCESSION NUMBER**: 0001193125-23-000861

**CONFORMED SUBMISSION TYPE**: S-8

**PUBLIC DOCUMENT COUNT**: 6

**FILED AS OF DATE**: 20230103

**DATE AS OF CHANGE**: 20230103

**EFFECTIVENESS DATE**: 20230103

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Arcellx, Inc.
- **CENTRAL INDEX KEY:** 0001786205
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **IRS NUMBER:** 472855917
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-269105
- **FILM NUMBER:** 23503173

**BUSINESS ADDRESS:**
- **STREET 1:** 25 WEST WATKINS MILL ROAD
- **STREET 2:** SUITE A
- **CITY:** GAITHERSBURG
- **STATE:** MD
- **ZIP:** 20878
- **BUSINESS PHONE:** 240-723-6641

**MAIL ADDRESS:**
- **STREET 1:** 25 WEST WATKINS MILL ROAD
- **STREET 2:** SUITE A
- **CITY:** GAITHERSBURG
- **STATE:** MD
- **ZIP:** 20878

**As filed with the Securities and Exchange Commission on January 3, 2023** 

**Registration No. 333-** 

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**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

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**FORM S-8** 

**REGISTRATION STATEMENT** 

***Under***

***The Securities Act of 1933***

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## ARCELLX, INC.
**(Exact name of Registrant as specified in its charter)** 

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---

| | |
|:---|:---|
| **Delaware** | **47-2855917** |
| **(State or other jurisdiction of**<br> **incorporation or organization)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

**25 West Watkins Mill Road, Suite A** 

**Gaithersburg, MD 20878** 

**(240) 327-0603** 

**(Address of principal executive offices, including zip code)** 

**2022 Equity Incentive Plan** 

**2022 Employee Stock Purchase Plan** 

**(Full title of the plan)** 

**Rami Elghandour** 

**President, Chief Executive Officer and Chairman of the Board of Directors** 

**Arcellx, Inc.** 

**25 West Watkins Mill Road, Suite A** 

**Gaithersburg, MD 20878** 

**(240) 327-0603** 

**(Name, address and telephone number, including area code, of agent for service)** 

***Copies to:***

**Dan Koeppen** 

**Robert L. Wernli Jr.** 

**Jennifer Fang** 

**Wilson Sonsini Goodrich & Rosati, P.C.** 

**1301 Avenue of the Americas** 

**40<sup>th</sup> Floor** 

**New York, New York 10019** 

**(212) 999-5800** 

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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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**REGISTRATION OF ADDITIONAL SECURITIES** 

**PURSUANT TO GENERAL INSTRUCTION E** 

This Registration Statement on Form S-8 (the "Registration Statement") is filed by Arcellx, Inc. (the "Registrant") for the purpose of registering (i) 2,205,299 additional shares of common stock of the Registrant that may be issued pursuant to the Registrant's 2022 Equity Incentive Plan, commencing January 1, 2023, and (ii) 312,500 additional shares of common stock of the Registrant that may be issued pursuant to the Registrant's 2022 Employee Stock Purchase Plan, commencing January 1, 2023.

In accordance with General Instruction E to Form S-8, the contents of the previous Registration Statement on Form S-8 (File No. 333-262571) filed by the Registrant with the Securities and Exchange Commission (the "SEC") on February 7, 2022 are incorporated by reference into this Registration Statement, except as modified or superseded hereby.

**PART II** 

**INFORMATION REQUIRED IN REGISTRATION STATEMENT** 

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

The Registrant hereby incorporates by reference into this Registration Statement the following documents previously filed with the Securities and Exchange Commission:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) The Registrant's Annual Report on [Form 10-K](http://www.sec.gov/Archives/edgar/data/1786205/000095017022004573/aclx_10k_2021.htm) for the fiscal year ended December 31, 2021, filed with the Commission on March 24, 2022 (the "Annual Report").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) All other reports filed pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), since the end of the fiscal year covered by the Annual Report (other than the portions of these documents not deemed to be filed).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) The description of the Registrant's Common Stock contained in its Registration Statement on [Form 8-A](http://www.sec.gov/Archives/edgar/data/1786205/000119312522024538/d129231d8a12b.htm) (File No. 001-41259) filed with the Commission on February 1, 2022, pursuant to Section 12(b) of the Exchange Act, including any amendment or
report filed for the purpose of updating such description.

All documents filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act on or after the date of this Registration Statement and prior to the filing of a post-effective amendment to this Registration Statement that indicates that all securities offered have been sold or that deregisters all securities then remaining unsold shall be deemed to be incorporated by reference in this Registration Statement and to be part hereof from the date of filing of such documents; *provided*, *however*, that documents or information deemed to have been furnished and not filed in accordance with the rules of the SEC shall not be deemed incorporated by reference into this Registration Statement. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any subsequently filed document which also is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

**Item 8. Exhibits.** 

The Registrant has filed the exhibits listed on the accompanying Exhibit Index of this Registration Statement.

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**EXHIBIT INDEX** 

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | | | **Incorporated by Reference** | **Incorporated by Reference** | **Incorporated by Reference** | **Incorporated by Reference** |
| **Exhibit**<br> **Number** | <br>**Exhibit Description** | <br>**Filed<br>Herewith** | **Form** | **File No.** | **Exhibit** | **Filing Date** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.1 | [2022 Equity Incentive Plan and forms of agreements thereunder.](http://www.sec.gov/Archives/edgar/data/1786205/000119312522022267/d129231dex103.htm) |  | S-1/A | 333-262191 | 10.3 | January 31, 2022 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2 | [Amended and Restated 2022 Employee Stock Purchase Plan](http://www.sec.gov/Archives/edgar/data/1786205/000095017022025099/aclx-ex10_1.htm) |  | 10-Q | 001-41259 | 10.1 | November 14, 2022 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.1 | [Opinion of Wilson Sonsini Goodrich & Rosati, Professional Corporation](d428807dex51.htm) | X |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;23.1 | [Consent of Independent Registered Public Accounting Firm](d428807dex231.htm) | X |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;23.2 | [Consent of Wilson Sonsini Goodrich & Rosati, P.C. (included in Exhibit 5.1 hereto).](d428807dex51.htm) | X |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;24.1 | [Power of Attorney](d428807dex241.htm) | X |  |  |  |  |
| 107.1 | [Filing Fee Table](d428807dexfilingfees.htm) | X |  |  |  |  |

---

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**SIGNATURES** 

Pursuant to the requirements of the Securities Act of 1933, as amended, 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 Gaithersburg, Maryland, on January 3, 2023.

---

| | |
|:---|:---|
| **Arcellx, Inc.** | **Arcellx, Inc.** |
|  By: | /s/ Rami Elghandour |
|  | Rami Elghandour |
|  | *President, Chief Executive Officer and Chairman of the Board of Directors* |

---

Pursuant to the requirements of the Securities Act of 1933, as amended, this registration statement on Form S-8 has been signed by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Signature** | **Title** | **Date** |
| /s/ Rami Elghandour<br> Rami Elghandour | President, Chief Executive Officer and Chairman of the Board of Directors(*Principal Executive Officer*) | January 3, 2023 |
| /s/ Michelle Gilson<br> Michelle Gilson | Chief Financial Officer<br>(*Principal Financial and Accounting Officer*) | January 3, 2023 |
| \*<br> Ali Behbahani | Director | January 3, 2023 |
| \*<br> Jill Carroll | Director | January 3, 2023 |
| \*<br> David Lubner | Director | January 3, 2023 |
| \*<br> Kavita Patel | Director | January 3, 2023 |
| \*<br> Olivia Ware | Director | January 3, 2023 |
| \*<br> Derek Yoon | Director | January 3, 2023 |

---

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| |
|:---|
|  \*By: /s/ Maryam Abdul-Kareem |
| Maryam Abdul-Kareem |
| Attorney-in-Fact |

---

## Exhibit 5.1

**Exhibit 5.1** 

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| | |
|:---|:---|
| ![LOGO](g428807g0103082257066.jpg)  | Wilson Sonsini Goodrich & Rosati <br>Professional Corporation<br>12235 El Camino Real <br>San Diego, CA 92130-3002<br>O: 650.493.9300 <br>F: 650.493.6811 |

---

January 3, 2023

Arcellx, Inc.

25 West Watkins Mill Road, Suite A

Gaithersburg, MD 20878

**Re: <u>Registration Statement on Form S-8</u>** 

Ladies and Gentlemen:

We have examined the Registration Statement on Form S-8 (the "<u>Registration Statement</u>") to be filed by Arcellx, Inc., a Delaware corporation (the "<u>Company</u>"), with the Securities and Exchange Commission on or about the date hereof, in connection with the registration under the Securities Act of 1933, as amended, of an aggregate of 2,517,799 shares (the "<u>Shares</u>") of the Company's common stock, par value $0.001 per share ("<u>Common Stock</u>"), consisting of (i) 2,205,299 shares of Common Stock reserved for future issuance under the Company's 2022 Equity Incentive Plan (the "<u>2022 Plan</u>"), and (ii) 312,500 shares of Common Stock reserved for issuance under the Company's Amended and Restated 2022 Employee Stock Purchase Plan. As the Company's legal counsel, we have reviewed the actions proposed to be taken by the Company in connection with the issuance and sale of the Shares to be issued under such plans (which plans are referred to herein as the "<u>Plans</u>").

It is our opinion that the Shares, when issued and sold in the manner referred to in the Plans and pursuant to the agreements that accompany the Plans, will be legally and validly issued, fully paid and nonassessable.

We consent to the use of this opinion as an exhibit to the Registration Statement, and further consent to the use of our name wherever appearing in the Registration Statement and any amendments thereto.

---

| |
|:---|
| Very truly yours, |
| /s/ Wilson Sonsini Goodrich & Rosati, P.C. |
| WILSON SONSINI GOODRICH & ROSATI, |
| Professional Corporation |

---

AUSTIN BEIJING BOSTON BOULDER BRUSSELS HONG KONG LONDON LOS ANGELES NEW YORK PALO ALTO

SALT LAKE CITY SAN DIEGO SAN FRANCISCO SEATTLE SHANGHAI WASHINGTON, DC WILMINGTON, DE

## Exhibit 23.1

**Exhibit 23.1** 

**Consent of Independent Registered Public Accounting Firm** 

We consent to the incorporation by reference in the Registration Statement (Form S-8), dated January 3, 2023, pertaining to the 2022 Equity Incentive Plan and the 2022 Employee Stock Purchase Plan of Arcellx, Inc. of our report dated March 24, 2022, with respect to the consolidated financial statements of Arcellx, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2021, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Tysons, Virginia

January 3, 2023

## Exhibit 24.1

**Exhibit 24.1** 

**POWER OF ATTORNEY – ARCELLX, INC DIRECTORS** 

KNOW ALL PERSONS BY THESE PRESENTS, that each of the undersigned directors of ARCELLX, INC., a Delaware corporation (the "Company"), hereby nominates and appoints RAMI ELGHANDOUR**,** MICHELLE GILSON and MARYAM ABDUL-KAREEM**,** and each of them acting or signing singly, as such director's agents and attorneys-in-fact, in his respective name and in the capacity or capacities indicated below, to execute and/or file, with all exhibits thereto, and other documents filed in connection therewith or constituting a part thereof:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) a registration statement on Form S-8 under the Securities Act of 1933, as amended (the "Securities Act"), in connection with the registration under the Securities Act of additional shares of Common Stock of the Company that may be issued, effective as of January 1, 2023, pursuant to (i) Section 3(b) of the Arcellx, Inc. 2022 Equity Incentive Plan (the "2022 Plan"), and (ii) Section 12 of the Arcellx, Inc. 2022 Employee Stock Purchase Plan (as amended and restated September 27, 2022) (the "2022 ESPP"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) any one or more amendments to any part of the foregoing registration statement, including any post-effective amendments, or appendices or supplements that may be required to be filed under the Securities Act to keep such registration statement effective or to terminate its effectiveness.

Section 3(b) of the 2022 Plan provides that the maximum aggregate number of shares of Common Stock that may be issued under the 2022 Plan will be increased on January 1, 2023, by a number of shares of the Company's common stock equal to the lesser of (i) 4,296,875 shares of common stock, (ii) five percent (5%) of the total number of shares of all classes of common stock of the Company outstanding on the last day of the immediately preceding fiscal year, and (iii) a lesser number of shares of common stock determined by the Company's Board of Directors (or a committee thereof).

Section 3 of the ESPP provides that that the total number of shares of Common Stock reserved and available for issuance under the ESPP will be increased on January 1, 2023, by a number of shares of the Company's common stock equal to the lesser of (i) 312,500 shares of common stock, (ii) one percent (1.0%) of the outstanding shares of common stock on the last day of the immediately preceding fiscal year, or (iii) an amount determined by the Company's Board of Directors (or a committee thereof).

Further, the undersigned do hereby authorize and direct such agents and attorneys-in-fact to take any and all actions and execute and file any and all documents with the Securities and Exchange Commission (the "SEC") or state regulatory agencies, necessary, proper or convenient in their opinion to comply with the Securities Act and the rules and regulations or orders of the SEC, or state regulatory agencies, adopted or issued pursuant thereto, to the end that the registration statement of the Company shall become effective under the Securities Act and any other applicable law.

Finally, each of the undersigned does hereby ratify, confirm and approve each and every act and document which the said appointment agents and attorneys-in-fact may take, execute or file pursuant thereto with the same force and effect as though such action had been taken or such documents had been executed or filed by the undersigned respectively.

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This Power of Attorney shall remain in full force and effect until revoked or superseded by written notice filed with the SEC.

---

| | |
|:---|:---|
| /s/ Rami Elghandour<br> Rami Elghandour | Date: December 29, 2022 |
| /s/ Ali Behbahani<br> Ali Behbahani | Date: December 29, 2022 |
| /s/ Jill Carroll<br> Jill Carroll | Date: December 29, 2022 |
| /s/ David Lubner<br> David Lubner | Date: December 29, 2022 |
| /s/ Kavita Patel<br> Kavita Patel | Date: December 29, 2022 |
| /s/ Olivia Ware<br> Olivia Ware | Date: December 29, 2022 |
| /s/ Derek Yoon<br> Derek Yoon | Date: December 29, 2022 |

---

## Ex-Filing

**Exhibit 107** 

**Calculation of Filing Fee Tables** 

**Form S-8** 

(Form Type)

**Arcellx, Inc.** 

(Exact name of registrant as specified in its charter)

**Table 1 – Newly Registered Securities** 

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Security Type** | **Security Class**<br> **Title** | **Fee**<br> **Calculation**<br> **Rule** | **Amount<br>Registered<sup>(1)</sup>** | **Maximum<br>Aggregate<br>Offering**<br> **Price** | **Fee**<br> **Rate** | **Amount of<br>Registration<br>Fee** |
| &nbsp;&nbsp;&nbsp;Equity | Common Stock, par value $0.001 per share, reserved for issuance under the Registrant's 2022 Equity Incentive Plan | Rule 457(c) and Rule 457(h) | 2205299<sup>(2)</sup>$30.43<sup>(4)</sup> | $67107249 | 0.00011020 | $7396.00 |
| &nbsp;&nbsp;&nbsp;Equity | Common Stock, par value $0.001 per share, reserved for issuance under the Registrant's Amended and Restated 2022 Employee Stock Purchase Plan | Rule 457(c) and Rule 457(h) | 312500<sup>(3)</sup>$25.87<sup>(5)</sup> | $8084375 | 0.00011020 | $891.00 |
| &nbsp;&nbsp;&nbsp; **Total Offering Amounts** | &nbsp;&nbsp;&nbsp; **Total Offering Amounts** | &nbsp;&nbsp;&nbsp; **Total Offering Amounts** | 2517799 | $75191624 |  | $8287.00 |
| &nbsp;&nbsp;&nbsp;**Total Fee Offsets<sup>(6)</sup>** | &nbsp;&nbsp;&nbsp;**Total Fee Offsets<sup>(6)</sup>** | &nbsp;&nbsp;&nbsp;**Total Fee Offsets<sup>(6)</sup>** | &nbsp;&nbsp;&nbsp;**Total Fee Offsets<sup>(6)</sup>** |  |  |  |
| &nbsp;&nbsp;&nbsp;**Net Fee Due** | &nbsp;&nbsp;&nbsp;**Net Fee Due** | &nbsp;&nbsp;&nbsp;**Net Fee Due** | &nbsp;&nbsp;&nbsp;**Net Fee Due** |  |  | $8287.00 |

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(1) Pursuant to Rule 416(a) of the Securities Act of 1933, as amended (the "Securities Act"), this
registration statement (the "Registration Statement") shall also cover any additional shares of the Registrant's Common Stock that become issuable under the Registrant's 2022 Equity Incentive Plan (the "2022 Plan") or
the Registrant's Amended and Restated 2022 Employee Stock Purchase Plan (the "2022 ESPP") by reason of any stock dividend, stock split, recapitalization or other similar transaction effected without receipt of consideration or
conversion of the Registrant's Common Stock that increases the number of outstanding shares of Common Stock.

(2) Represents an automatic increase in the number of shares of Common Stock reserved for issuance pursuant to
future awards under the 2022 Plan as a result of the annual evergreen increase under the 2022 Plan.

(3) Represents an automatic increase in the number of shares of Common Stock reserved for issuance pursuant to
future awards under the 2022 ESPP as a result of the annual evergreen increase under the 2022 ESPP.

(4) Pursuant to Rule 457(c) and 457(h) under the Securities Act, and solely for the purpose of calculating the
registration fee, the proposed maximum offering price per share is $30.43, which is the average of the high and low prices of shares of Common Stock on The Nasdaq Global Select Market ("Nasdaq") on December 30, 2022 (such date being
within five business days of the date that this Registration Statement was filed with the U.S. Securities and Exchange Commission (the "SEC")).

(5) Pursuant to Rule 457(c) and 457(h) under the Securities Act, and solely for the purpose of calculating the
registration fee, the proposed maximum offering price per share is $25.87, which is 85% of the average of the high and low prices of shares of Common Stock on Nasdaq on December 27, 2022 (such date being within five business days of the date
that this Registration Statement was filed with the SEC). Pursuant to the 2022 ESPP, the purchase price of the shares of common stock reserved for issuance thereunder will be 85% of the lower of the fair market value of the
common stock on (i) the first trading day of the offering period or (ii) the exercise date.

(6) The Registrant does not have any fee offsets.