Washington, DC 20549



Pursuant to Section 13 or 15(d) of

The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)

June 10, 2020

Pacific Biosciences of California, Inc.

(Exact name of registrant as specified in its charter)




(State or other jurisdiction

of incorporation)


File Number)

(IRS Employer

Identification No.)

1305 O’Brien Drive

Menlo Park, California 94025

(Address of principal executive offices) (Zip Code)

(650) 521-8000

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, par value $0.001 per share


The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 5.02Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On June 10, 2020, the Board of Directors (the “Board”) of Pacific Biosciences of California, Inc. (the “Company”) announced that Dr. Michael Hunkapiller will retire from his role as Chief Executive Officer and President by the end of the year. Dr. Hunkapiller will continue to serve as a member of the Company’s Board until the end of his term in 2021.

On the same day, the Company also announced that Susan K. Barnes will retire from her role as Executive Vice President and Chief Financial Officer in August 2020. She will continue to serve in her role until that time.

The Board of Directors is conducting searches for the Company’s next Chief Executive Officer and Chief Financial Officer.

Item 8.01Other Events.

A copy of the press release dated June 10, 2020 announcing the foregoing leadership changes is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information in Item 8.01 of this Current Report on Form 8-K shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Act of 1933, or the Securities Exchange Act of 1934, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No. Description


Press Release, dated June 10, 2020, entitled “Pacific Biosciences Announces Planned Retirement of CEO, Dr. Mike Hunkapiller”


Cover Page Interactive Data File (embedded within the Inline XBRL document)


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: June 10, 2020


Pacific Biosciences of California, Inc.


/s/ Brett Atkins

Brett Atkins, J.D., Ph.D.

General Counsel and Corporate Secretary

Exhibit 991

Exhibit 99.1

Pacific Biosciences Announces Planned Retirement of CEO, Dr. Michael Hunkapiller

Dr. Hunkapiller to retire by the end of 2020

Susan K. Barnes, CFO to retire in August 2020

MENLO PARK, California, June 10, 2020 (GLOBE NEWSWIRE) – Pacific Biosciences of California, Inc. (NASDAQ: PACB), a leading provider of high-quality sequencing of genomes, transcriptomes and epigenomes, today announced that Michael Hunkapiller, Ph.D. is retiring as Chief Executive Officer and President by the end of the year. Dr. Hunkapiller plans to remain on the Board of Directors. 

The company also announced that Susan K. Barnes plans to retire and will be leaving the company in August 2020.  Ms. Barnes will continue in her role as Executive Vice President and Chief Financial Officer until that time.

The company has active searches under way for both the new CEO and CFO.

“Mike’s leadership at Pacific Biosciences has been essential to the development of the company’s revolutionary long-read sequencing technology and the Board thanks Mike for his contributions over the past 8 years as CEO of Pacific Biosciences,” said Christian Henry, Chairman of the Board. “The Board will be looking for a new Chief Executive Officer who has a track record of significant commercial success and can balance our commitment to scientific and engineering innovation with our increasing commercial opportunity.”  Mr. Henry added, “We would also like to thank Susan, who has been with the company for more than 10 years, for her leadership and significant contributions.”

“Over the past eight years, we have advanced our sequencing technology further than many imagined and I’m proud to say that our systems based on SMRT® technology are industry-leading and routinely used in many of the top research centers in the world. I thank all of our employees and customers who have worked so hard to make us the clear leader in long-read sequencing,” said Dr. Hunkapiller.  “I wanted to announce my planned retirement as early as possible in order to ensure a smooth transition.  As a Board member, I look forward to supporting the new CEO and contributing to the success of the company in any way I can to ensure the company reaches its technological and commercial potential.”

About Pacific Biosciences

Pacific Biosciences of California, Inc. (Nasdaq: PACB) offers sequencing systems to help scientists resolve genetically complex problems. Based on its novel Single Molecule, Real-Time (SMRT®) technology, Pacific Biosciences’ products enable: de novo genome assembly to finish genomes in order to more fully identify, annotate and decipher genomic structures; full-length transcript analysis to improve annotations in reference genomes, characterize alternatively spliced isoforms in important gene families, and find novel genes; targeted sequencing to more comprehensively characterize genetic variations; and real-time kinetic information for epigenome characterization. Pacific Biosciences’ technology provides high accuracy, ultra-long reads, uniform coverage, and the ability to simultaneously detect epigenetic changes. PacBio® sequencing systems, including consumables and software, provide a simple, fast, end-to-end workflow for SMRT Sequencing. More information is available at

Forward-Looking Statements
All statements in this press release that are not historical are forward-looking statements, including, among other things, statements relating to market leadership, uses, accuracy, quality or performance of, or benefits of using, our products or technologies, including SMRT technology, the suitability or utility of our methods, products or technologies for particular applications or projects, the search for a new Chief Executive Officer and Chief Financial Officer, the ability of the Company to be successful in reaching its technological and commercial potential, and other future events. You should not place undue reliance on forward-looking statements because they involve known and unknown risks, uncertainties, changes in circumstances and other factors that are, in some cases, beyond Pacific


Biosciences’ control and could cause actual results to differ materially from the information expressed or implied by forward-looking statements made in this press release. Factors that could materially affect actual results can be found in Pacific Biosciences’ most recent filings with the Securities and Exchange Commission, including Pacific Biosciences’ most recent reports on Forms 8-K, 10-K and 10-Q, and include those listed under the caption “Risk Factors.” Pacific Biosciences undertakes no obligation to revise or update information in this press release to reflect events or circumstances in the future, even if new information becomes available.


Media: Colin Sanford 203.918.4347

Investors: Trevin Rard 650.521.8450