PACB officer sells 50K shares for tax withholding

PACIFIC BIOSCIENCES OF CALIFORNIA, INC. officer Michele Farmer reported two open-market sales of common stock that were mandatorily executed to cover tax withholding on vesting restricted stock units.

Rhea-AI Filing Summary

PACIFIC BIOSCIENCES OF CALIFORNIA, INC. officer Michele Farmer reported two open-market sales of common stock that were mandatorily executed to cover tax withholding on vesting restricted stock units. On February 17, 2026, Farmer sold 35,215 shares at a weighted average price of $1.576 per share. On February 18, 2026, Farmer sold 14,952 shares at a weighted average price of $1.629 per share, reflecting sale price ranges disclosed in the footnotes. After these tax-related sales, Farmer directly owned 219,092 shares of PACB common stock.

Insider Trade Summary

Net Seller: 50,167 shares

Net Sell 2 txns

Insider Farmer Michele

Role See Remarks

Sold 50,167 shs ($80K)

Type	Security	Shares	Price	Value
Sale	Common Stock	14,952	$1.629	$24K
Sale	Common Stock	35,215	$1.576	$55K

Holdings After Transaction: Common Stock — 219,092 shares (Direct)

Footnotes (3)

1. F1. Represents the number of shares mandatorily sold to cover tax withholding obligations in connection with the vesting of restricted stock units.
2. F2. This sale price represents the weighted average sale price of the shares sold ranging from $1.51 to $1.68 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.
3. F3. This sale price represents the weighted average sale price of the shares sold ranging from $1.55 to $1.70 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

FAQ

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

What insider transaction did PACB report for Michele Farmer?

PACB reported that officer Michele Farmer sold 50,167 common shares in two transactions. These sales were made to satisfy tax withholding obligations tied to vesting restricted stock units, rather than discretionary open-market selling for portfolio reasons.

How many PACB shares did Michele Farmer sell and on what dates?

Michele Farmer sold 50,167 PACB common shares across two days. She sold 35,215 shares on February 17, 2026 and 14,952 shares on February 18, 2026, according to the reported Form 4 transactions.

What prices did Michele Farmer receive for her PACB share sales?

The reported sales used weighted average prices for the transactions. Shares sold on February 17, 2026 averaged $1.576 within a $1.55–$1.70 range, while those on February 18, 2026 averaged $1.629 within a $1.51–$1.68 range.

Why were Michele Farmer’s PACB shares sold according to the Form 4?

The filing states the shares were mandatorily sold to cover tax withholding obligations arising from vesting restricted stock units. This means the transactions were primarily tax-related, not voluntary sales aimed at changing investment exposure.

How many PACB shares does Michele Farmer own after these transactions?

After completing the tax-related sales, Michele Farmer directly owns 219,092 shares of PACB common stock. This post-transaction holding reflects her remaining equity position following the February 17 and February 18, 2026 open-market sales.

Are detailed PACB sale prices by trade available for Michele Farmer’s transactions?

Yes. The filing notes the reported prices are weighted averages over specified ranges. It also states that, upon request by regulators, the issuer, or security holders, full trade-by-trade price information will be provided for these Form 4 transactions.

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

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Accepted by SEC EDGAR 02/19/2026 - 08:28 PM EST 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^*

Farmer Michele

(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)
02/17/2026

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	02/17/2026		S		35,215(1)	D	$1.576(2)	234,044	D
Common Stock	02/18/2026		S		14,952(1)	D	$1.629(3)	219,092	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

Explanation of Responses:

1. Represents the number of shares mandatorily sold to cover tax withholding obligations in connection with the vesting of restricted stock units.

2. This sale price represents the weighted average sale price of the shares sold ranging from $1.51 to $1.68 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

3. This sale price represents the weighted average sale price of the shares sold ranging from $1.55 to $1.70 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Remarks:

Chief Accounting Officer

	/s/ Michele Farmer	02/19/2026
	** 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.
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