ATOM (NASDAQ: ATOM) insider Robert Mears sells 60,621 shares; option exercise noted

Rhea-AI Filing Summary

ATOM notice of proposed sale: Robert Mears reported recent open-market sales and a planned stock-option-related sale. The filing lists three past sales totaling $516,317.24 and a separate stock option exercise transaction designated as Cash on 06/15/2026.

The entries show sales on 06/01/2026 (5,453 shares for $51,895.57), 06/08/2026 (37,156 shares for $306,817.67), and 06/09/2026 (18,012 shares for $157,605.00). The filing identifies the broker as Morgan Stanley Smith Barney LLC.

Insights

Securities Compliance Counsel

Form 144 documents proposed sales and a cash exercise; broker details are recorded.

The filing lists a stock option exercise scheduled on 06/15/2026 and three completed selling transactions with exact share counts and proceeds. Broker-dealer identification (Morgan Stanley Smith Barney LLC) is included, aligning with standard resale notifications.

Regulatory focus: ensure timing and volumes match Rule 144 resale conditions and any holding-period requirements. Subsequent filings may show settlement details or Form 4/Form 5 updates if required.

Key Figures

Sale on 06/01/2026: 5,453 shares Sale on 06/08/2026: 37,156 shares Sale on 06/09/2026: 18,012 shares +2 more

5 metrics

Sale on 06/01/2026 5,453 shares proceeds $51,895.57

Sale on 06/08/2026 37,156 shares proceeds $306,817.67

Sale on 06/09/2026 18,012 shares proceeds $157,605.00

Planned transaction Stock option exercise dated <date>06/15/2026</date>, method <b>Cash</b>

Total reported proceeds $516,317.24 aggregate of three listed sales

Key Terms

Form 144, Stock Option Exercise, Broker-dealer

3 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Securities To Be Sold | Stock Option Exercise | Cash"

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.

Broker-dealer financial

"Morgan Stanley Smith Barney LLC Executive Financial Services"

A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.

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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	8182	77401.72	38716500	06/15/2026	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	06/15/2026	Stock Option Exercise	ISSUER			8182	06/15/2026	Cash

* 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	06/09/2026	18012	157605.00
ROBERT MEARS 750 University Avenue, Suite 280, Los Gatos CA 95032	Common	06/08/2026	37156	306817.67
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 ATOM's Form 144 filed by Robert Mears report?

The Form 144 reports recent sales and a planned stock-option-related sale by Robert Mears. It lists three past sales and a separate stock option exercise dated 06/15/2026 with broker details.

How many shares did Robert Mears sell in early June 2026 under ATOM filings?

The filing shows three sales totaling 60,621 shares: 5,453 on 06/01/2026, 37,156 on 06/08/2026, and 18,012 on 06/09/2026. Proceeds are listed per trade.

What cash proceeds are shown for the June 2026 sales disclosed in ATOM's Form 144?

The three disclosed sales show proceeds of $51,895.57, $306,817.67, and $157,605.00, respectively, summing to $516,317.24. Each amount is tied to the specific sale date in the filing.

Does the Form 144 indicate who handled the transactions for ATOM?

Yes. The filing names Morgan Stanley Smith Barney LLC (New York Plaza) as the broker-dealer associated with the transactions. Broker identification is included in the securities information section.

Is the June 15, 2026 entry in ATOM's Form 144 a sale or an exercise?

The entry dated 06/15/2026 is labeled a Stock Option Exercise and is described with the settlement method Cash. It is recorded separately from the past resale transactions.