SIBN (SIBN) investor files to sell 80,000 shares after option exercise

Rhea-AI Filing Summary

A holder of SIBN common stock filed to potentially sell 80,000 shares through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate market value of $1,420,800.00, on or after August 3, 2026. The shares relate to an Exercise of Stock Options. In the preceding three months, 3,575 shares of common stock were sold for $54,505.17 on June 5, 2026.

Key Figures

Planned shares to be sold: 80,000 shares Aggregate market value of planned sale: $1,420,800.00 Form 144 sale date: 08/03/2026 +2 more

5 metrics

Planned shares to be sold 80,000 shares Common stock under Form 144 notice

Aggregate market value of planned sale $1,420,800.00 Value of 80,000 shares of common stock

Form 144 sale date 08/03/2026 Date associated with the planned sale of 80,000 shares

Shares sold in past 3 months 3,575 shares Common stock sold on 06/05/2026

Proceeds from recent sale $54,505.17 Value of 3,575 shares sold on 06/05/2026

Key Terms

Form 144, Exercise of Stock Options, Executive Financial Services, Securities Sold During The Past 3 Months

4 terms

Form 144 regulatory

"144: Securities To Be Sold"

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.

Exercise of Stock Options financial

"Common | 08/03/2026 | Exercise of Stock Options | Issuer"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

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Available on EDGAR 08/03/2026 - 04:47 PM Accepted by SEC EDGAR 08/03/2026 - 04:46 PM Learn about SEC filing dates

FAQ

What planned stock sale does the Form 144 disclose for SIBN?

The filing discloses a plan to potentially sell 80,000 shares of SIBN common stock with an aggregate market value of $1,420,800.00, related to an Exercise of Stock Options, on or after August 3, 2026.

Which broker is handling the planned SIBN share sale?

The planned sale of 80,000 SIBN common shares is to be handled by Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

What prior SIBN stock sales are reported in the last three months?

The filing reports that 3,575 shares of SIBN common stock were sold on June 5, 2026 for total proceeds of $54,505.17, within the three months before the planned new sale.

On what date can the new SIBN share sale begin under this Form 144?

The planned sale of 80,000 SIBN shares under this Form 144 is associated with the date August 3, 2026, which is the date from which the sale may occur under the notice.

What is the relationship of the SIBN shares to stock options?

The 80,000 SIBN shares covered by the planned sale are tied to an Exercise of Stock Options, indicating the securities to be sold arise from option exercise rather than open-market purchases.

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	80000	1420800.00	44349283	08/03/2026	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	08/03/2026	Exercise of Stock Options	Issuer			80000	08/03/2026	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
JEFFREY W DUNN 471 El Camino Real, Suite 101 Santa Clara CA 95050	Common	06/05/2026	3575	54505.17

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)