$PACB

$2.83 +$0.38 (15.51%) Close

$PACB Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 310.8M shares outstanding

Who owns PACB?

By type of holder

Institutions 60.8% Insiders 2.5% Everyone else 36.7%

Concentration Top 10 holders own 41.9%

ARK Investment Management LLC 9.6% · BlackRock, Inc. 10.4%

Institutional ownership

60.8%

+0.3 pts vs last qtr

Institutional holders

221

-9 vs last qtr

Net shares bought

+763.2K

by institutions in Q2 2026

New / sold out

24 / 33

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +7.1M
Point72 Asset Management, L.P. +4.5M

Biggest sellers in Q2 2026

ARK Investment Management LLC −6.5M
Nuveen, LLC −1.9M

Who is planning to sell?

Notices of proposed sale, last 12 months

$3.51M

7 notices from 5 people

Shares covered

1.7M

0.55% of the company

Arranged in advance

54%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Jim Gibson Officer 10b5-1 $1.9M
Christian Henry Officer $974K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2018–FY2025

+122.0%

+12.07% a year

Each share's claim on the business

−55.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $394M

over 8 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years65% 3–5 years1% 1–3 years20% Under 1 year14%

Quarterly turnover

13.3%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting PACB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AI ARK Investment Management LLC	29.8M	9.58%	−6.5M (−17.9%)	≤2021	0.3%
Shares held by quarter Peak holding37.3M (Q4'25) Change over 8 quarters−3.6M Share of the company9.580% ARK Investment Management LLC's full portfolio →
B BlackRock, Inc.	32.3M	10.40%	+7.1M (+28.0%)	≤2021	0.0%
Shares held by quarter Peak holding32.3M (Q2'26) Change over 8 quarters+9.1M Share of the company10.400% BlackRock, Inc.'s full portfolio →

ARK Investment Management LLC

29.8M

% of company

9.58%

Change vs last qtr

−6.5M (−17.9%)

Held since

≤2021

BlackRock, Inc.

32.3M

% of company

10.40%

Change vs last qtr

+7.1M (+28.0%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Pacific Biosciences of California, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting PACB on Form N-PORT; together they hold 24.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AI ARK Innovation ETF ARK ETF Trust	$17.9M	12.8M	4.12%	0.32%	July 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$16M	9.5M	3.07%	0.00%	June 30, 2026

ARK Innovation ETF

ARK ETF Trust

Position value

$17.9M

% of company

4.12%

% of the fund

0.32%

As of

July 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$16M

% of company

3.07%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Pacific Biosciences of California, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
HC Henry Christian O Insider	3.6M	1.15%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.150% Henry Christian O's insider activity →
VO Van Oene Mark Insider	2.7M	0.87%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.870% Van Oene Mark's insider activity →

Henry Christian O

Insider

3.6M

% of company

1.15%

Change vs last qtr

—

Held since

—

Van Oene Mark

Insider

2.7M

% of company

0.87%

Change vs last qtr

—

Held since

—

4 more holders behind a free account

See every insider and 5%+ holder of Pacific Biosciences of California, Inc..

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