PACB director receives 223K stock options at $1.58

PACIFIC BIOSCIENCES OF CALIFORNIA, INC. reported a new stock option grant for director Randall S. Livingston.

Rhea-AI Filing Summary

PACIFIC BIOSCIENCES OF CALIFORNIA, INC. reported a new stock option grant for director Randall S. Livingston. He received options covering 223,492 shares of common stock at an exercise price of $1.58 per share. The options vest monthly over one year or earlier upon the next annual stockholder meeting, as long as he continues serving as a director, and expire on June 3, 2036. This filing reflects a compensation-related award, with no open-market share purchases or sales.

Insider Trade Summary

Grant/Award: 223,492 shares

Grant/Award 1 txn

Insider LIVINGSTON RANDALL S

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	223,492	$0.00	$0.00

Holdings After Transaction: Stock Option (right to buy) — 223,492 contracts (Direct)

Footnotes (1)

1. F1. The shares subject to the option will vest monthly over one (1) year, on the same day of the month as the date of grant or, if earlier, on the date of the next annual meeting of the Company's stockholders occurring after the date of grant, provided such Reporting Person continues to serve as a director through the applicable vesting dates.

Key Figures

Option grant size: 223,492 options Exercise price: $1.58 per share Underlying shares: 223,492 shares +3 more

6 metrics

Option grant size 223,492 options Stock Option (right to buy) granted to director

Exercise price $1.58 per share Conversion or exercise price for the options

Underlying shares 223,492 shares Common stock underlying granted options

Expiration date June 3, 2036 Options expire if not exercised by this date

Vesting period Monthly over one year Vests monthly or earlier at next annual stockholder meeting

Post-transaction derivative holdings 223,492 options Total options held following the grant

Key Terms

Stock Option (right to buy), exercise price, vesting, expiration date

4 terms

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

exercise price financial

"conversion_or_exercise_price: 1.5800 per share"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

vesting financial

"The shares subject to the option will vest monthly over one (1) year"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

expiration date financial

"expiration_date: 2036-06-03"

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

FAQ

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

What did PACB director Randall S. Livingston report in this Form 4?

Randall S. Livingston reported receiving a grant of stock options covering 223,492 PACB common shares. These options are part of his director compensation and do not represent an open-market purchase or sale of existing shares.

How many PACB shares are covered by the new stock option grant?

The stock option grant covers 223,492 shares of PACIFIC BIOSCIENCES OF CALIFORNIA, INC. common stock. Each option gives the right to buy one share, subject to vesting and the $1.58 per share exercise price set in the award.

What is the exercise price and term of Randall Livingston’s PACB options?

The options have an exercise price of $1.58 per share and expire on June 3, 2036. This means he can purchase PACB common shares at $1.58 any time after vesting and before the expiration date, subject to plan rules.

How do the PACB director stock options vest for Randall Livingston?

The options vest monthly over one year from the June 3, 2026 grant date or earlier on the date of the next annual stockholder meeting. Vesting requires Livingston to continue serving as a director through each applicable vesting date.

Did Randall Livingston buy or sell PACB shares in the market?

No market buy or sell occurred in this Form 4. The filing reports a compensation-related stock option grant with an exercise price of $1.58 per share, rather than an open-market purchase or sale of PACB common stock.

How many PACB derivative securities does Randall Livingston hold after this grant?

After the reported grant, Livingston holds 223,492 stock options according to the filing. These represent rights to acquire PACB common shares in the future, subject to vesting, at the fixed $1.58 per share exercise price.

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

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Accepted by SEC EDGAR 06/04/2026 - 05:23 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

LIVINGSTON RANDALL S

(Last) (First) (Middle)

PACIFIC BIOSCIENCES OF CALIFORNIA, INC.

1305 O'BRIEN DRIVE

(Street)

MENLO PARK CALIFORNIA 94025

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
PACIFIC BIOSCIENCES OF CALIFORNIA, INC. [ PACB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$1.58	06/03/2026		A		223,492		07/03/2026(1)	06/03/2036	Common Stock	223,492	$0	223,492	D

Explanation of Responses:

1. The shares subject to the option will vest monthly over one (1) year, on the same day of the month as the date of grant or, if earlier, on the date of the next annual meeting of the Company's stockholders occurring after the date of grant, provided such Reporting Person continues to serve as a director through the applicable vesting dates.

Remarks:

	/s/ Brett Atkins, Attorney-in-fact	06/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)