ATOM (NASDAQ: ATOM) Rule 144 notice lists 26,176-share option exercise

Rhea-AI Filing Summary

Rule 144 notice of proposed sale by a holder of Common Stock of ATOM. The filing lists a Stock Option Exercise of 26,176 shares dated 06/08/2026 and prior issuer transactions: 1,000 exercised shares dated 03/02/2021 and 9,980 restricted shares dated 03/01/2026. The filing also reports a sale by Robert Mears of 5,453 shares on 06/01/2026 for $51,895.57.

Insights

Securities Compliance Counsel

Rule 144 notice lists proposed resale activity and recent issuer transactions.

The excerpt documents a proposed Stock Option Exercise of 26,176 shares on 06/08/2026 and prior issuer-reported share events totaling 10,980 shares from 2021 and 2026. The filing names Robert Mears as a recent seller of 5,453 shares on 06/01/2026.

Compliance implications depend on holding periods and Rule 144 conditions; subsequent filings or broker documentation will show whether the proposed sale meets the rule's requirements.

Key Figures

Proposed option exercise: 26,176 shares Recent sale by holder: 5,453 shares Proceeds reported for sale: $51,895.57 +3 more

6 metrics

Proposed option exercise 26,176 shares Stock Option Exercise dated <date>06/08/2026

Recent sale by holder 5,453 shares Sold by Robert Mears on <date>06/01/2026

Proceeds reported for sale $51,895.57 Consideration for 5,453 shares on <date>06/01/2026

Prior exercised shares 1,000 shares Exercised Shares dated <date>03/02/2021

Restricted stock recorded 9,980 shares Restricted Stock dated <date>03/01/2026

Top-line numeric fields 37,156; 306,817.67; 38,716,500 Header numeric entries appearing in the excerpt

Key Terms

Rule 144, Restricted Stock, Stock Option Exercise

3 terms

Rule 144 regulatory

"144: Securities To Be Sold"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock financial

"03/01/2026 | Restricted Stock | ISSUER"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Stock Option Exercise financial

"06/08/2026 | Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	37156	306817.67	38716500	06/08/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/08/2026	Stock Option Exercise	ISSUER			26176	06/08/2026	Cash
Common	03/02/2021	Exercised Shares	ISSUER			1000	03/02/2021	Cash
Common	03/01/2026	Restricted Stock	ISSUER			9980	03/01/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
ROBERT MEARS 750 University Avenue, Suite 280, Los Gatos CA 95032	Common	06/01/2026	5453	51895.57

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the ATOM Form 144 report?

It reports a proposed resale under Rule 144 including a 26,176-share stock option exercise dated 06/08/2026 and prior issuer transactions of 1,000 and 9,980 shares.

Who sold shares recently under the ATOM filing?

Robert Mears sold 5,453 shares on 06/01/2026 for $51,895.57, as disclosed in the filing, reflecting a recent disposition by that holder.

What issuer-side share events are listed for ATOM?

The filing lists issuer-related events: 1,000 exercised shares on 03/02/2021 and 9,980 restricted shares dated 03/01/2026, recorded as issuer transactions in the excerpt.

Does the Form 144 say how proceeds will be used for ATOM?

The excerpt does not state a use-of-proceeds designation; it records the transaction types and dates such as a stock option exercise on 06/08/2026 without a proceeds allocation.