Major Joby (NYSE: JOBY) holder adds 10b5-1 sale plans while keeping 5.7% stake

Rhea-AI Filing Summary

Paul Sciarra filed an amended Schedule 13D on Joby Aviation to disclose a new Rule 10b5-1 trading plan. Under this 2026 plan, a broker may periodically sell up to 1,875,000 Joby common shares on his behalf.

Sciarra is reported as beneficially owning 56,520,980 Joby shares, representing 5.7% of the common stock based on 983,642,852 shares outstanding as of May 4, 2026. Most of his holdings are through the Sciarra Management Trust and the Sciarra Foundation, over which he has voting and dispositive power.

He also has an existing Rule 10b5-1 arrangement covering up to 1,500,000 shares that expires on June 30, 2026, and recently received 1,361 fully vested restricted stock units on April 5, 2026.

Insights

Equity ownership & governance analyst

Large Joby holder adds structured sale plans while retaining a sizable stake.

Paul Sciarra remains a major Joby Aviation shareholder with 56,520,980 shares, or 5.7% of the company’s common stock as of May 4, 2026. Most shares are held via the Sciarra Management Trust and the Sciarra Foundation, where he has voting and dispositive power.

The filing highlights a new Rule 10b5-1 trading plan allowing periodic sales of up to 1,875,000 shares, alongside an existing plan for up to 1,500,000 shares that runs through June 30, 2026. Rule 10b5-1 plans pre-schedule trades, which can make selling activity more mechanical rather than opportunistic.

From an ownership perspective, the disclosed sale capacity is small relative to his total position, indicating continued large exposure to Joby Aviation. Future company filings may show how many shares are actually sold under these plans and how his percentage ownership evolves over time.

Key Figures

Beneficial ownership: 56,520,980 shares Ownership percentage: 5.7% Shares outstanding: 983,642,852 shares +5 more

8 metrics

Beneficial ownership 56,520,980 shares Joby Aviation common stock beneficially owned by Paul Sciarra

Ownership percentage 5.7% Percent of Joby common stock class represented by Sciarra’s holdings

Shares outstanding 983,642,852 shares Joby Aviation common shares outstanding as of May 4, 2026

New 10b5-1 plan capacity 1,875,000 shares Maximum Joby shares to be sold under 2026 Rule 10b5-1 trading plan

Existing 10b5-1 plan capacity 1,500,000 shares Maximum Joby shares under existing trading arrangement expiring June 30, 2026

RSU award 1,361 units Fully vested restricted stock units granted April 5, 2026

Trust-held shares 56,328,057 shares Joby shares held by the Sciarra Management Trust

Foundation-held shares 50,000 shares Joby shares held by the Sciarra Foundation

Key Terms

Schedule 13D, Rule 10b5-1, beneficial owner, restricted stock units, +1 more

5 terms

Schedule 13D regulatory

"This Amendment No. 1 to ... amends and supplements the Statement on filed with the"

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

Rule 10b5-1 regulatory

"entered into a trading plan (the "2026 Trading Plan") pursuant to Rule 10b5-1 , as amended"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

beneficial owner financial

"therefore may be deemed to be the beneficial owner of such shares"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

restricted stock units financial

"received an award of 1,361 fully vested restricted stock units, with each restricted stock unit"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

voting and dispositive power financial

"The Reporting Person has voting and dispositive power over the shares held in the Sciarra Management Trust"

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

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Accepted by SEC EDGAR 05/18/2026 - 04:11 PM Learn about SEC filing dates

FAQ

How many Joby Aviation (JOBY) shares does Paul Sciarra beneficially own?

Paul Sciarra beneficially owns 56,520,980 Joby Aviation common shares, according to the amended Schedule 13D. This total includes shares held via the Sciarra Management Trust, the Sciarra Foundation, and shares held directly in his own name.

What percentage of Joby Aviation (JOBY) does Paul Sciarra own?

Paul Sciarra’s beneficial ownership represents 5.7% of Joby Aviation’s common stock. This percentage is based on 983,642,852 Joby common shares outstanding as of May 4, 2026, as disclosed in the Schedule 13D amendment.

What is the size of Paul Sciarra’s new Rule 10b5-1 trading plan for Joby (JOBY)?

The new Rule 10b5-1 trading plan permits periodic sales of up to 1,875,000 Joby shares on Sciarra’s behalf. A broker-dealer executes the plan, creating a pre-arranged framework for selling rather than ad hoc discretionary trades in the market.

Does Paul Sciarra have any other active trading arrangements in Joby (JOBY) stock?

Yes. In addition to the new plan, Sciarra is party to an existing Rule 10b5-1 arrangement for up to 1,500,000 shares. That existing trading arrangement is scheduled to expire on June 30, 2026, according to the amended Schedule 13D.

How many Joby Aviation (JOBY) shares were outstanding for the ownership calculation?

The 5.7% ownership figure is calculated using 983,642,852 Joby common shares outstanding as of May 4, 2026. This outstanding share count is explicitly cited in the filing as the basis for the percentage-of-class calculation.

Did Paul Sciarra recently receive any Joby Aviation (JOBY) equity awards?

On April 5, 2026, Paul Sciarra received 1,361 fully vested restricted stock units, each representing a contingent right to one Joby common share. The filing notes no other transactions in Joby common stock during the prior 60 days beyond this award and the trading plans.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 1)

Joby Aviation, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

G65163100

(CUSIP Number)

Paul Sciarra
333 Encinal St,
Santa Cruz, CA, 95060
831-201-6700

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

05/14/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): G65163100

1

Name of reporting person

Sciarra Paul Cahill

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

PF, OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 56,520,980.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 56,520,980.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

56,520,980.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

5.7 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

Explanatory Note This Amendment No. 1 to Schedule 13D (this "Amendment No. 1") amends and supplements the Statement on Schedule 13D filed with the United States Securities and Exchange Commission on February 22, 2022 (as amended to date, the "Schedule 13D") relating to the common stock, par value $0.0001 per share (the "Common Stock"), of Joby Aviation, Inc., a Delaware corporation (the "Issuer"). Capitalized terms used herein without definition shall have the meaning set forth in the Schedule 13D.

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock
(b)	Name of Issuer: Joby Aviation, Inc.
(c)	Address of Issuer's Principal Executive Offices: 333 Encinal Street, Santa Cruz, CALIFORNIA , 95060.
Item 4.	Purpose of Transaction
	Item 4 of the Schedule 13D is hereby amended and supplemented as follows: 10b5-1 Trading Plan On May 14, 2026, the Reporting Person entered into a trading plan (the "2026 Trading Plan") pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, pursuant to which, a broker dealer has agreed to make periodic sales of up to an aggregate of 1,875,000 shares of Common Stock on behalf of the Reporting Person. This description of the 2026 Trading Plan does not purport to be complete and is qualified in its entirety by the text of the 2026 Trading Plan, the form of which is attached as an exhibit to this Schedule 13D and incorporated herein by reference.
Item 5.	Interest in Securities of the Issuer
(a)	Amount beneficially owned: 56,520,980 Percent of Class: 5.7%
(b)	Number of shares the Reporting Person has: Sole power to vote or direct the vote: 56,520,980 Shared power to vote: 0 Sole power to dispose or direct the disposition of: 56,520,980 Shared power to dispose or direct the disposition of: 0 The share amount reported herein consists of (i) 56,328,057 shares of Issuer Common Stock held of record by the Sciarra Management Trust (ii) 50,000 shares of Issuer Common Stock held of record by the Sciarra Foundation, and (iii) 142,923 shares held directly by Mr. Sciarra. The Reporting Person has voting and dispositive power over the shares held in the Sciarra Management Trust and the Sciarra Foundation and therefore may be deemed to be the beneficial owner of such shares. The above percentage is based on 983,642,852 shares of Issuer Common Stock outstanding as of May 4, 2026.
(c)	On April 5, 2026, the Reporting Person received an award of 1,361 fully vested restricted stock units, with each restricted stock unit representing a contingent right to receive one share of Common Stock. Except for the foregoing and as described in Item 4, during the past 60 days, the Reporting Person has not effected any transactions with respect to the Issuer Common Stock.
(d)	None.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	Item 6 of the Schedule 13D is hereby amended and supplemented as follows: Item 4 above summarizes certain provisions of the 2026 Trading Plan and is incorporated herein by reference. The Form of Trading Plan is attached as an exhibit hereto and incorporated herein by reference. The Reporting Person is also party to an existing Rule 10b5-1 trading arrangement pursuant to which up to 1,500,000 shares of Common Stock may be sold on behalf of the Reporting Person, which will expire on June 30, 2026. Except as set forth herein, the Reporting Person does not have any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any securities of the Issuer, including but not limited to any contracts, arrangements, understandings or relationships concerning the transfer or voting of such securities, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies.
Item 7.	Material to be Filed as Exhibits.
	Form of Trading Plan.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Sciarra Paul Cahill

Signature:	/s/ Paul Sciarra
Name/Title:	Paul Sciarra
Date:	05/18/2026