Month: September 2026

GARDENA, Calif., Sept. 24, 2026 (GLOBE NEWSWIRE) — Polar Power, Inc. (NASDAQ: POLA) today announced that Arthur D. Sams, the Company’s Founder, President and Chief Executive Officer, has agreed to convert $614,700 of debt owed to him by the Company into 683 Series A Convertible Preferred shares of Polar Power.

The conversion eliminates $614,700 of debt from the Company’s balance sheet, increases shareholders’ equity, and represents an important step toward addressing the Company’s shareholders’ equity compliance issue.

“Converting this debt into equity reflects my confidence in Polar Power’s future and my commitment to the Company’s long-term success,” said Arthur Sams, Founder, President and Chief Executive Officer. “I believe the opportunities ahead of us across telecommunications, data center power, defense and distributed energy markets position Polar Power for meaningful growth.”

In addition to the preferred shares, Polar is also issuing to Mr. Sams a warrant to purchase 382,276 shares of the Company’s common stock at $1.34 per share.

The Company believes the debt-to-equity conversion strengthens its capital structure and supports its efforts to regain and maintain compliance with applicable Nasdaq continued listing requirements. This debt-to-equity conversion was approved by Polar’s Audit Committee, consisting entirely of independent board members.

About Polar Power, Inc.

Polar Power, Inc. (NASDAQ: POLA) designs, manufactures and sells direct-current power generators, renewable energy systems and other power solutions for applications including telecommunications, drone defense, robotics, EV charging, micro-grids military and commercial markets. The Company is headquartered in Gardena, California.

For more information, please visit www.polarpower.com. or follow Polar Power on www.linkedin.com/company/polar-power-inc/.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of applicable federal securities laws. These statements include, among others, statements regarding the Company’s expectation for future growth opportunities and its efforts to regain and maintain compliance with Nasdaq’s continued listing requirements. Forward-looking statements are based on current expectations and assumptions and are subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied. These risks and uncertainties include those described in Polar Power’s filings with the U.S. Securities and Exchange Commission. Polar Power undertakes no obligation to update any forward-looking statement except as required by law.

Media and Investor Relations
Polar Power, Inc.
249 E. Gardena Blvd.
Gardena, CA 90248
Tel: 310-830-9153
Email: ir@polarpowerinc.com
www.polarpower.com

8.3

PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY
A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE
Rule 8.3 of the Takeover Code (the “Code”)

1.        KEY INFORMATION

(a)   Full name of discloser:	Rathbones Group Plc
(b)   Owner or controller of interests and short positions disclosed, if different from 1(a):         The naming of nominee or vehicle companies is insufficient. For a trust, the trustee(s), settlor and beneficiaries must be named.
(c)   Name of offeror/offeree in relation to whose relevant securities this form relates:         Use a separate form for each offeror/offeree	NextEnergy Solar Fund Ltd
(d)   If an exempt fund manager connected with an offeror/offeree, state this and specify identity of offeror/offeree:
(e)   Date position held/dealing undertaken:         For an opening position disclosure, state the latest practicable date prior to the disclosure	23/09/2026
(f)   In addition to the company in 1(c) above, is the discloser making disclosures in respect of any other party to the offer?         If it is a cash offer or possible cash offer, state “N/A”	No

2.        POSITIONS OF THE PERSON MAKING THE DISCLOSURE

If there are positions or rights to subscribe to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2(a) or (b) (as appropriate) for each additional class of relevant security.

(a)      Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any)

Class of relevant security:	Ordinary NPV
	Interests		Short positions
	Number	%	Number	%
(1)   Relevant securities owned and/or controlled:	5,793,661	1.00%
(2)   Cash-settled derivatives:
(3)   Stock-settled derivatives (including options) and agreements to purchase/sell:
TOTAL:	5,793,661	1.00%

All interests and all short positions should be disclosed.

Details of any open stock-settled derivative positions (including traded options), or agreements to purchase or sell relevant securities, should be given on a Supplemental Form 8 (Open Positions).

(b)      Rights to subscribe for new securities (including directors’ and other employee options)

Class of relevant security in relation to which subscription right exists:
Details, including nature of the rights concerned and relevant percentages:

3.        DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

Where there have been dealings in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as appropriate) for each additional class of relevant security dealt in.

The currency of all prices and other monetary amounts should be stated.

(a)        Purchases and sales

Class of relevant security	Purchase/sale	Number of securities	Price per unit
Ordinary NPV	Sale	18,348	49.3p

(b)        Cash-settled derivative transactions

Class of relevant security	Product description e.g. CFD	Nature of dealing e.g. opening/closing a long/short position, increasing/reducing a long/short position	Number of reference securities	Price per unit

(c)        Stock-settled derivative transactions (including options)

(i)        Writing, selling, purchasing or varying

Class of relevant security	Product description e.g. call option	Writing, purchasing, selling, varying etc.	Number of securities to which option relates	Exercise price per unit	Type e.g. American, European etc.	Expiry date	Option money paid/ received per unit

(ii)        Exercise

Class of relevant security	Product description e.g. call option	Exercising/ exercised against	Number of securities	Exercise price per unit

(d)        Other dealings (including subscribing for new securities)

Class of relevant security	Nature of dealing e.g. subscription, conversion	Details	Price per unit (if applicable)
Ordinary NPV

4.        OTHER INFORMATION

(a)        Indemnity and other dealing arrangements

Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the person making the disclosure and any party to the offer or any person acting in concert with a party to the offer: Irrevocable commitments and letters of intent should not be included. If there are no such agreements, arrangements or understandings, state “none”

None

(b)        Agreements, arrangements or understandings relating to options or derivatives

Details of any agreement, arrangement or understanding, formal or informal, between the person making the disclosure and any other person relating to: (i)   the voting rights of any relevant securities under any option; or (ii)   the voting rights or future acquisition or disposal of any relevant securities to which any derivative is referenced: If there are no such agreements, arrangements or understandings, state “none”

None

(c)        Attachments

Is a Supplemental Form 8 (Open Positions) attached?

No

Date of disclosure:	24/09/2026
Contact name:	Lydia Cotterill – Compliance Department
Telephone number:	0151 237 1176

Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service.

The Panel’s Market Surveillance Unit is available for consultation in relation to the Code’s disclosure requirements on +44 (0)20 7638 0129.

The Code can be viewed on the Panel’s website at.

MIRAMAR, Fla., Sept. 24, 2026 (GLOBE NEWSWIRE) — HCW Biologics Inc. (the “Company” or “HCW Biologics”), (NASDAQ: HCWB), a clinical-stage biopharmaceutical company developing transformative fusion immunotherapeutics to treat autoimmune diseases, cancer and senescence-associated dysplasia, today announced the pricing of its $1.5 million private placement (the “Offering”) with an existing stockholder of the Company, (the “Investor”). Pursuant to a securities purchase agreement entered into on September 23, 2026 with the Investor (the “Purchase Agreement”), the Company agreed to issue and sell an aggregate of 903,614 units (the “Units”), with each Unit consisting of (i) one pre-funded warrant (a “Pre-Funded Warrant”) to purchase one share of the Company’s common stock, par value $0.0001 per share, (“Common Stock”) and (ii) the right to receive one common stock purchase warrant (a “Common Warrant”) to purchase one share of Common Stock, and subject to, stockholder approval of the issuance thereof.

In connection with the Offering, the Company will issue 903,614 Pre-Funded Warrants. Subject to stockholder approval, which the Company is obligated to seek pursuant to the terms of the Purchase Agreement, the Investor will also be entitled to receive Common Warrants to purchase up to an aggregate of 903,614 shares of Common Stock.

Maxim Group LLC is acting as the sole placement agent for the Offering.

The combined purchase price for each Unit consisting of a Pre-Funded Warrant and the right to receive one Common Warrant upon, and subject to, stockholder approval of the issuance thereof, was $1.6599 per Unit. The Pre-Funded Warrants have an exercise price of $0.0001 per share of Common Stock, are exercisable immediately and will not expire until exercised in full. The Common Warrants will have an exercise price of $1.66 per share and will expire on the five and one half (5.5) year anniversary of their issuance. Under Nasdaq Listing Rule 5635(d), the Company is required to obtain stockholder approval before issuing the Common Warrants because the potential issuance of shares upon exercise of the Common Warrants could exceed the thresholds set forth in such rule. Following receipt of stockholder approval, the Company will issue the Common Warrants to the Investor in accordance with the Purchase Agreement.

The Company intends to use the net proceeds from this Offering to continue clinical trials for HCW9302, advance its IND-enabling studies for its T-Cell Engager, HCW11-018b, and its second-generation immune checkpoint inhibitor, HCW11-040, and for general corporate purposes.

On September 23, 2026, the Company also entered into a registration rights agreement with the Investors, pursuant to which the Company agreed to submit to the U.S. Securities and Exchange Commission (the “SEC”) a registration statement on Form S-1 within 15 trading days of the closing of the Offering covering the resale of the shares of Common Stock issuable upon exercise of the Pre-Funded Warrants and the shares of Common Stock issuable upon exercise of the Common Warrants. The Company also agreed to use commercially reasonable efforts to cause the registration statement to be declared effective by the SEC within 60 days following the closing of the Offering.

The number of shares of Common Stock the Company that may be held by the Investor, including those shares issued at closing and upon the exercise of Pre-Funded Warrants from time to time in the Offering, may not exceed 9.99% of the number of shares of the Company’s Common Stock outstanding immediately after giving effect to such issuances.

This press release shall not constitute an offer to sell or a solicitation of an offer to buy any of the securities described herein, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.

About HCW Biologics:

HCW Biologics Inc. (the “Company”) (NASDAQ: HCWB) is a clinical-stage biopharmaceutical company developing transformative fusion immunotherapeutics to treat diseases promoted by chronic inflammation, including autoimmune diseases, cancer, and senescence-associated dysplasia. The Company’s immunotherapeutics represent a new class of drugs that it believes have the potential to fundamentally change the treatment of proinflammatory and senescence-associated diseases and conditions that are promoted by chronic inflammation —and in doing so, improve patients’ quality of life and possibly extend longevity. A key aspect of the Company’s clinical development and financing strategy is to focus on its business development programs. See the Company Pipeline at https://hcwbiologics.com/pipeline/

Forward Looking Statements:

Statements in this press release contain “forward-looking statements” that are subject to substantial risks and uncertainties. These statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. Forward-looking statements contained in this press release may be identified by the use of words such as “anticipate,” “expect,” “believe,” “will,” “may,” “should,” “estimate,” “project,” “outlook,” “forecast” or other similar words and include, without limitation, statements regarding the completion of the Offering and the satisfaction of customary closing conditions; the anticipated use of proceeds from the Offering; the Company’s ability to obtain stockholder approval for the issuance of the Common Warrants; the anticipated issuance of the Common Warrants following receipt of stockholder approval; the anticipated filing and effectiveness of registration statements covering the shares of Common Stock issued in the Offering; and the prospective efficacy and success of the Company’s immunotherapeutic candidates and development programs. Further, certain forward-looking statements are based on assumptions as to future events that may not prove to be accurate. Factors that could cause actual results to differ include, but are not limited to, the risks and uncertainties that are described in the section titled “Risk Factors” in the annual report on Form 10-K filed with the SEC on March 31, 2026, and in other filings filed from time to time with the SEC.

Company Contact:

Rebecca Byam
Chief Financial Officer
rebeccabyam@hcwbiologics.com

This press release was published by a CLEAR® Verified individual.

8.3

PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY
A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE
Rule 8.3 of the Takeover Code (the “Code”)

1.        KEY INFORMATION

(a)   Full name of discloser:	Rathbones Group Plc
(b)   Owner or controller of interests and short positions disclosed, if different from 1(a):         The naming of nominee or vehicle companies is insufficient. For a trust, the trustee(s), settlor and beneficiaries must be named.
(c)   Name of offeror/offeree in relation to whose relevant securities this form relates:         Use a separate form for each offeror/offeree	Eleco Plc
(d)   If an exempt fund manager connected with an offeror/offeree, state this and specify identity of offeror/offeree:
(e)   Date position held/dealing undertaken:         For an opening position disclosure, state the latest practicable date prior to the disclosure	23/09/2026
(f)   In addition to the company in 1(c) above, is the discloser making disclosures in respect of any other party to the offer?         If it is a cash offer or possible cash offer, state “N/A”	No

2.        POSITIONS OF THE PERSON MAKING THE DISCLOSURE

If there are positions or rights to subscribe to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2(a) or (b) (as appropriate) for each additional class of relevant security.

(a)      Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any)

Class of relevant security:	1p Ordinary Shares
	Interests		Short positions
	Number	%	Number	%
(1)   Relevant securities owned and/or controlled:	1,155,310	1.36%
(2)   Cash-settled derivatives:
(3)   Stock-settled derivatives (including options) and agreements to purchase/sell:
TOTAL:	1,155,310	1.36%

All interests and all short positions should be disclosed.

Details of any open stock-settled derivative positions (including traded options), or agreements to purchase or sell relevant securities, should be given on a Supplemental Form 8 (Open Positions).

(b)      Rights to subscribe for new securities (including directors’ and other employee options)

Class of relevant security in relation to which subscription right exists:
Details, including nature of the rights concerned and relevant percentages:

3.        DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

Where there have been dealings in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as appropriate) for each additional class of relevant security dealt in.

The currency of all prices and other monetary amounts should be stated.

(a)        Purchases and sales

Class of relevant security	Purchase/sale	Number of securities	Price per unit
1p Ordinary Shares	Sale	2,100	229.512p

(b)        Cash-settled derivative transactions

Class of relevant security	Product description e.g. CFD	Nature of dealing e.g. opening/closing a long/short position, increasing/reducing a long/short position	Number of reference securities	Price per unit

(c)        Stock-settled derivative transactions (including options)

(i)        Writing, selling, purchasing or varying

Class of relevant security	Product description e.g. call option	Writing, purchasing, selling, varying etc.	Number of securities to which option relates	Exercise price per unit	Type e.g. American, European etc.	Expiry date	Option money paid/ received per unit

(ii)        Exercise

Class of relevant security	Product description e.g. call option	Exercising/ exercised against	Number of securities	Exercise price per unit

(d)        Other dealings (including subscribing for new securities)

Class of relevant security	Nature of dealing e.g. subscription, conversion	Details	Price per unit (if applicable)
1p Ordinary Shares

4.        OTHER INFORMATION

(a)        Indemnity and other dealing arrangements

Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the person making the disclosure and any party to the offer or any person acting in concert with a party to the offer: Irrevocable commitments and letters of intent should not be included. If there are no such agreements, arrangements or understandings, state “none”

None

(b)        Agreements, arrangements or understandings relating to options or derivatives

Details of any agreement, arrangement or understanding, formal or informal, between the person making the disclosure and any other person relating to: (i)   the voting rights of any relevant securities under any option; or (ii)   the voting rights or future acquisition or disposal of any relevant securities to which any derivative is referenced: If there are no such agreements, arrangements or understandings, state “none”

None

(c)        Attachments

Is a Supplemental Form 8 (Open Positions) attached?

No

Date of disclosure:	24/09/2026
Contact name:	Lydia Cotterill – Compliance Department
Telephone number:	0151 237 1176

Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service.

The Panel’s Market Surveillance Unit is available for consultation in relation to the Code’s disclosure requirements on +44 (0)20 7638 0129.

The Code can be viewed on the Panel’s website at.