Palladyne AI officer plans sale of 5,341 RSU shares

Palladyne AI Corp. (symbol PDYN) received a notice from officer Stephen Sonne under Rule 144 covering planned sales of 5,341 shares of Common Stock, with brokerage through Muriel Siebert & Co., LLC.

Rhea-AI Filing Summary

Palladyne AI Corp. (symbol PDYN) received a notice from officer Stephen Sonne under Rule 144 covering planned sales of 5,341 shares of Common Stock, with brokerage through Muriel Siebert & Co., LLC. The shares relate to restricted share units vesting on 08/20/2026 and are tied to an issuer-implemented, non-discretionary sell-to-cover arrangement for income tax liabilities on RSU vesting, unless Sonne elects to pay such taxes in cash. Sonne also reports having sold 5,245 shares of Common Stock on 05/21/2026 during the prior three months.

Key Figures

Shares to be sold under Rule 144: 5,341 shares of Common Stock Reported amount for planned sale: $32,894.44 Shares sold in past 3 months: 5,245 shares of Common Stock +3 more

6 metrics

Shares to be sold under Rule 144 5,341 shares of Common Stock Planned sale reported for RSUs vesting on 08/20/2026

Reported amount for planned sale $32,894.44 Associated with 5,341 shares of Common Stock in Rule 144 notice

Shares sold in past 3 months 5,245 shares of Common Stock Sale on 05/21/2026 reported in past three months section

Reported amount for prior sale $32,225.28 Common Stock sale on 05/21/2026 by Stephen Sonne

RSU vesting date 08/20/2026 Restricted share units vesting that give rise to the 5,341 shares

Date of Rule 144 notice 08/21/2026 Filing date of the notice by Stephen Sonne

Key Terms

Rule 144, restricted share unit, sell-to-cover, Equity Compensation

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

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 share unit financial

"tax liabilities incurred upon vesting of restricted share unit awards only"

A restricted share unit (RSU) is a promise by a company to give an employee a set number of company shares at a future date, typically after meeting time or performance conditions. For investors, RSUs matter because when they convert into actual shares they increase the number of shares outstanding (like unlocking more tickets in a game), which can dilute existing holders, and they align employee incentives with company performance, influencing behavior and long-term value.

sell-to-cover financial

"non-discretionary sell-to-cover arrangement for the purposes of satisfying income tax"

Sell-to-cover is when part of newly issued or exercised company stock is immediately sold to pay required taxes and fees, so the recipient keeps the remaining shares. For investors this matters because it reduces the number of shares insiders or employees actually hold after a grant, can create small, routine share sales that aren’t signal of cashing out, and slightly increases share supply on the market—like selling a portion of a paycheck to cover the tax bill.

Equity Compensation financial

"Common Stock | 08/20/2026 | Restricted Share Units Vesting - See Remarks |"

Equity compensation is pay given to employees, executives or contractors in the form of company ownership—such as stock, stock options or restricted shares—rather than just cash. It matters to investors because it can align workers' incentives with shareholders (like paying someone in slices of the same pie they help grow), but it also increases the number of shares outstanding and company expenses, affecting ownership percentages and earnings per share.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Palladyne AI Corp. (PDYN) disclose about Stephen Sonne’s planned share sale?

Officer Stephen Sonne filed a Rule 144 notice for potential sale of 5,341 shares of Palladyne AI Corp. Common Stock, connected to RSUs vesting on 08/20/2026, using an issuer-implemented sell-to-cover arrangement for income tax liabilities on the vested awards.

How many PDYN shares has Stephen Sonne sold in the last three months?

Stephen Sonne reports a prior sale of 5,245 shares of Palladyne AI Corp. Common Stock on 05/21/2026, with reported value of $32,225.28, during the three months preceding the new Rule 144 notice.

What is the size and value of the PDYN shares covered by the new Rule 144 notice?

The Rule 144 notice covers 5,341 shares of Palladyne AI Corp. Common Stock, with a reported amount of $32,894.44. These shares are associated with restricted share units vesting on 08/20/2026 and are to be sold through Muriel Siebert & Co., LLC.

Why are Stephen Sonne’s PDYN shares being sold under the arrangement?

The filing states the shares are sold under an issuer-implemented, non-discretionary sell-to-cover arrangement, used solely to satisfy income tax liabilities incurred upon vesting of restricted share unit awards, unless Stephen Sonne chooses to pay those tax liabilities in cash instead.

When was the Rule 144 notice for PDYN filed by Stephen Sonne?

The date of notice for Stephen Sonne’s Rule 144 filing relating to Palladyne AI Corp. Common Stock is 08/21/2026. The notice covers planned sales following RSU vesting on 08/20/2026 and references a prior sale on 05/21/2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/21/2026 - 07:47 PM Accepted by SEC EDGAR 08/21/2026 - 07:47 PM Learn about SEC filing dates

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	0001998996
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	PALLADYNE AI CORP.
SEC File Number	001-39897
Address of Issuer	650 SOUTH 500 WEST SUITE 150 SALT LAKE CITY UTAH 84101
Phone	(888) 927-7296
Name of Person for Whose Account the Securities are To Be Sold	STEPHEN SONNE
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	Officer

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 Stock	Muriel Siebert & Co., LLC 653 Collins Ave Miami Beach FL 33139	5341	32894.44	49338510	08/21/2026	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 Stock	08/20/2026	Restricted Share Units Vesting - See Remarks	Palladyne AI Corp.			5341	08/20/2026	Equity Compensation

* 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
Stephen Sonne C/O PALLADYNE AI CORP. 650 SOUTH 500 WEST, SUITE 150 SALT LAKE CITY UT 84101	Common Stock	05/21/2026	5245	32225.28

144: Remarks and Signature

Remarks	The reporting person sold the securities reported herein pursuant to an Issuer-implemented, non-discretionary sell-to-cover arrangement for the purposes of satisfying income tax liabilities incurred upon vesting of restricted share unit awards only, unless the reporting person elects to pay such tax liabilities in cash.
Date of Notice	08/21/2026
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	/s/ Stephen Sonne
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)