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  4. [Form 4] PACIFIC BIOSCIENCES OF CALIFORNIA, INC. Insider Trading Activity

Large equity grants to PacBio (PACB) executive highlight retention focus

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

PACIFIC BIOSCIENCES OF CALIFORNIA, INC. reported that officer Christian O. Henry received equity-based compensation on February 27, 2026. He was granted a stock option for 1,841,621 shares at an exercise price of $0.00 and 920,810 shares of common stock represented by restricted stock units.

The option vests in 36 equal monthly installments beginning on March 27, 2026, while the RSUs vest in three equal annual installments each February 15 of 2027, 2028, and 2029, in both cases requiring his continued service to the company.

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Insights

Officer receives large time-vested equity awards, signaling retention-focused compensation.

The filing shows Christian O. Henry receiving an option for 1,841,621 shares and RSUs for 920,810 shares at a grant price of $0.00. These are compensation grants, not open-market purchases, and represent a significant equity incentive.

The option vests monthly over three years starting March 27, 2026, while the RSUs vest annually on February 15, 2027–2029. Both awards depend on continued service, aligning part of his potential future wealth with longer-term company performance.

Actual shareholder impact will depend on future stock price performance and whether all tranches ultimately vest under these time-based conditions.

Insider HENRY CHRISTIAN O
Role See Remarks
Type Security Shares Price Value
Grant/Award Stock Option (right to buy) 1,841,621 $0.00 $0.00
Grant/Award Common Stock 920,810 $0.00 $0.00
Holdings After Transaction: Stock Option (right to buy) — 1,841,621 shares (Direct); Common Stock — 3,594,310 shares (Direct)
Footnotes (2)
  1. F1. Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest in equal annual installments on February 15 of each of 2027, 2028, and 2029, subject to the Reporting Person's continued status as a service provider through the applicable vesting dates.
  2. F2. The shares subject to the option will vest in 36 equal monthly installments beginning on March 27, 2026, subject to the Reporting Person's continued status as a service provider through the applicable vesting dates.

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Form 4 Insider Transactions: What Each Field Means →

FAQ

What equity awards did PACB officer Christian O. Henry receive in this Form 4?
Christian O. Henry received a stock option covering 1,841,621 shares and 920,810 shares of common stock in the form of restricted stock units. Both awards were granted as compensation at a price of $0.00 per share and increase his direct equity exposure to PACB.

How do the new PACB stock options granted to Christian O. Henry vest?
The option covering 1,841,621 shares vests in 36 equal monthly installments starting March 27, 2026. Each month, a portion becomes exercisable so long as he continues as a service provider, spreading vesting evenly over three years and encouraging ongoing tenure with the company.

What is the vesting schedule for Christian O. Henry’s PACB RSU grant?
The 920,810 shares of PACB common stock are represented by RSUs that vest in three equal annual installments. Vesting occurs on February 15 of 2027, 2028, and 2029, provided Henry maintains his status as a service provider through each vesting date, reinforcing multi-year retention.

Are the PACB equity awards to Christian O. Henry open-market stock purchases?
No, both transactions are coded as grants or awards, not open-market purchases. The option and RSU awards were issued at $0.00 under company compensation arrangements, meaning they are part of his pay package rather than discretionary buying of PACB shares in the market.

Did Christian O. Henry sell any PACB shares in this Form 4 filing?
No, the filing only reports acquisition-type transactions coded as grants or awards. There are two transactions, both classified as equity grants increasing his potential holdings, with no dispositions or sales of PACB common stock or options disclosed in this particular report.

What does this PACB Form 4 imply about insider ownership for Christian O. Henry?
After the RSU grant, his reported total common stock holdings are 3,594,310 shares, while the new option adds 1,841,621 derivative shares. These awards increase his direct stake and further tie his potential future compensation to PACB’s share price and continued employment.
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*
HENRY CHRISTIAN O
(Last) (First) (Middle)
PACIFIC BIOSCIENCES OF CALIFORNIA, INC.
1305 O'BRIEN DRIVE
(Street)
MENLO PARK CA 94025
(City) (State) (Zip)
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)
Director 10% Owner
X Officer (give title below) Other (specify below)
See Remarks
3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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
Common Stock 02/27/2026 A 920,810(1) A $0 3,594,310 D
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) $1.68 02/27/2026 A 1,841,621 (2) 02/27/2036 Common Stock 1,841,621 $0 1,841,621 D
Explanation of Responses:
1. Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest in equal annual installments on February 15 of each of 2027, 2028, and 2029, subject to the Reporting Person's continued status as a service provider through the applicable vesting dates.
2. The shares subject to the option will vest in 36 equal monthly installments beginning on March 27, 2026, subject to the Reporting Person's continued status as a service provider through the applicable vesting dates.
Remarks:
President & CEO
/s/ Michele Farmer, Attorney-in-fact 03/03/2026
** 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.

Source: View Original Filing on SEC EDGAR