Filing Details
- Accession Number:
- 0001072613-25-000357
- Form Type:
- 13D Filing
- Publication Date:
- 2025-05-11 20:00:00
- Filed By:
- New Enterprise Associates 15, L.P.
- Company:
- Arcellx Inc.
- Filing Date:
- 2025-05-12
- SEC Url:
- 13D Filing
Ownership Summary
Please notice the below summary table is generated without human intervention and may contain errors. Please refer to the complete filing displayed below for exact figures.
| Name | Sole Voting Power | Shared Voting Power | Sole Dispositive Power | Shared Dispositive Power | Aggregate Amount Owned Power | Percent of Class |
|---|---|---|---|---|---|---|
| New Enterprise Associates 15, L.P. | 0 | 3,745,262 | 0 | 3,745,262 | 3,745,262 | 6.8% |
| NEA Partners 15, L.P. | 0 | 3,745,262 | 0 | 3,745,262 | 3,745,262 | 6.8% |
| NEA 15 GP, LLC | 0 | 3,745,262 | 0 | 3,745,262 | 3,745,262 | 6.8% |
| Forest Baskett | 0 | 3,745,262 | 0 | 3,745,262 | 3,745,262 | 6.8% |
| Anthony A. Florence, Jr. | 0 | 3,745,262 | 0 | 3,745,262 | 3,745,262 | 6.8% |
| Mohamad H. Makhzoumi | 0 | 3,745,262 | 0 | 3,745,262 | 3,745,262 | 6.8% |
| Scott D. Sandell | 0 | 3,745,262 | 0 | 3,745,262 | 3,745,262 | 6.8% |
| Peter W. Sonsini | 0 | 0 | 0 | 0 | 0 | 0% |
Filing
|
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 3)
|
Arcellx, Inc. (Name of Issuer) |
Common Stock $0.001 par value per share (Title of Class of Securities) |
03940C100 (CUSIP Number) |
Stephanie Brecher New Enterprise Associates, 1954 Greenspring Drive, Suite 600 Timonium, MD, 21093 (410)842-4000 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) |
05/08/2025 (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.
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 (“Act”) 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).
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
New Enterprise Associates 15, 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 Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
3,745,262.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
6.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
PN |
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
NEA Partners 15, 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)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
3,745,262.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
6.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
PN |
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
NEA 15 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)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
3,745,262.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
6.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
OO |
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
Forest Baskett | ||||||||
| 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)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
3,745,262.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
6.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
Anthony A. Florence, Jr. | ||||||||
| 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)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
3,745,262.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
6.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
Mohamad H. Makhzoumi | ||||||||
| 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)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
3,745,262.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
6.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
Scott D. Sandell | ||||||||
| 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)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
3,745,262.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
6.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13D
|
| CUSIP No. | 03940C100 |
| 1 |
Name of reporting person
Peter W. Sonsini | ||||||||
| 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)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
0.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
0 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13D
|
| Item 1. | Security and Issuer | |
| (a) | Title of Class of Securities:
Common Stock $0.001 par value per share | |
| (b) | Name of Issuer:
Arcellx, Inc. | |
| (c) | Address of Issuer's Principal Executive Offices:
800 Bridge Parkway, Redwood City,
CALIFORNIA
, 94065. | |
Item 1 Comment:
This Amendment No. 3 ("Amendment No. 3") to Schedule 13D amends and supplements the Schedule 13D originally filed on February 17, 2022 (the "Schedule 13D"), Amendment No. 1 thereto filed on January 24, 2023 ("Amendment No. 1"), and Amendment No. 2 thereto filed on June 23, 2023 ("Amendment No. 2"), relating to the Common Stock of the Issuer.
Certain terms used but not defined in this Amendment No. 3 have the meanings assigned thereto in the Schedule 13D (and Amendment No. 1 and Amendment No. 2 thereto). Except as specifically provided herein, this Amendment No. 3 does not modify any of the information previously reported on the Schedule 13D (and Amendment No. 1 and Amendment No. 2 thereto).
This Amendment No. 3 is being filed to report that the beneficial ownership of Common Stock of the Issuer by the Reporting Persons (as defined below) has decreased by more than 1% as a result of an increase in the number of Common Stock outstanding. | ||
| Item 2. | Identity and Background | |
| (a) | New Enterprise Associates 15, L.P. ("NEA 15"), NEA Partners 15, L.P. ("NEA Partners 15"), which is the sole general partner of NEA 15; and NEA 15 GP, LLC ("NEA 15 LLC" and, together with NEA Partners 15, the "Control Entities"), which is the sole general partner of NEA Partners 15; and Forest Baskett ("Baskett"), Anthony A. Florence, Jr. ("Florence"), Mohamad H. Makhzoumi ("Makhzoumi") and Scott D. Sandell ("Sandell") (together, the "Managers"), and Peter W. Sonsini ("Sonsini"). The Managers are the managers of NEA 15 LLC.
The persons named in this Item 2 are referred to individually herein as a "Reporting Person" and collectively as the "Reporting Persons." | |
| (b) | The address of the principal business office of NEA 15, each Control Entity and Sandell is New Enterprise Associates, 1954 Greenspring Drive, Suite 600, Timonium, MD 21093. The address of the principal business office of Baskett and Makhzoumi is New Enterprise Associates, 2855 Sand Hill Road, Menlo Park, CA 94025. The address of the principal business office of Florence is New Enterprise Associates, 104 5th Avenue, 19th Floor, New York, NY 10011. | |
| (c) | The principal business of NEA 15 is to invest in and assist growth-oriented businesses located principally in the United States. The principal business of NEA Partners 15 is to act as the sole general partner of NEA 15. The principal business of NEA 15 LLC is to act as the sole general partner of NEA Partners 15. The principal business of each of the Managers is to manage the Control Entities and a number of affiliated partnerships with similar businesses. | |
| (d) | During the five years prior to the date hereof, none of the Reporting Persons has been convicted in a criminal proceeding or has been a party to a civil proceeding ending in a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. | |
| (e) | During the five years prior to the date hereof, none of the Reporting Persons has been convicted in a criminal proceeding or has been a party to a civil proceeding ending in a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. | |
| (f) | NEA 15 LLC is a limited liability company organized under the laws of the State of Delaware. NEA 15 and NEA Partners 15 are limited partnerships organized under the laws of the State of Delaware. Each of the Managers is a United States citizen. | |
| Item 3. | Source and Amount of Funds or Other Consideration | |
Not applicable. | ||
| Item 4. | Purpose of Transaction | |
Not applicable. | ||
| Item 5. | Interest in Securities of the Issuer | |
| (a) | NEA 15 is the record owner of the NEA 15 Shares. As the general partner of NEA 15, NEA Partners 15 may be deemed to own beneficially the NEA 15 Shares. As the sole general partner of NEA Partners 15, NEA 15 LLC may be deemed to own beneficially the NEA 15 Shares. As members of NEA 15 LLC, each of the Managers may be deemed to own beneficially the NEA 15 Shares.
Each Reporting Person disclaims beneficial ownership of the NEA 15 Shares other than those shares which such person owns of record.
The percentage of outstanding Common Stock of the Issuer which may be deemed to be beneficially owned by each Reporting Person is set forth on Line 13 of such Reporting Person's cover sheet. Such percentage was calculated based on 55,106,703 shares of Common Stock reported by the Issuer to be outstanding as of May 2, 2025, on the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 8, 2025. | |
| (b) | Regarding the number of shares as to which such person has:
(i) sole power to vote or to direct the vote: See line 7 of cover sheets
(ii) shared power to vote or to direct the vote: See line 8 of cover sheets
(iii) sole power to dispose or to direct the disposition: See line 9 of cover sheets
(iv) shared power to dispose or to direct the disposition: See line 10 of cover sheets. | |
| (c) | None of the Reporting Persons has effected any transaction in the Common Stock during the last 60 days. | |
| (d) | No other person is known to have the right to receive or the power to direct the receipt of dividends from, or any proceeds from the sale of, Common Stock beneficially owned by any of the Reporting Persons. | |
| (e) | Sonsini has ceased to beneficially own five percent (5%) or more of the Issuer's Common Stock as a result of ceasing to be a manager of NEA 15 LLC. | |
| Item 6. | Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer | |
Not applicable. | ||
| Item 7. | Material to be Filed as Exhibits. | |
Exhibit 1 - Agreement regarding filing of joint Schedule 13D.
Exhibit 2 - Power of Attorney regarding filings under the Securities Exchange Act of 1934, as amended. | ||
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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Comments accompanying signature:
This Amendment No. 3 to Schedule 13D was executed by Zachary Bambach on behalf of the individuals listed above pursuant to a Power of Attorney, a copy of which is attached as Exhibit 2. |