$SIBN

$21.44 +$0.00 (0.0%) After hours

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

Ownership

13F as of Q2 2026 · 44.8M shares outstanding

Who owns SIBN?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 66.1%

First Light Asset Management, LLC 18.1% · Freund John Gordon 8.2%

Institutional ownership

100.0%

+3.2 pts vs last qtr

Institutional holders

167

-13 vs last qtr

Net shares bought

+4.0M

by institutions in Q2 2026

New / sold out

21 / 34

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

First Light Asset Management, LLC +2.8M
Cadian Capital Management, LP +1.5M

Biggest sellers in Q2 2026

Morgan Stanley −581.6K
Renaissance Technologies LLC −428.5K

Who is planning to sell?

Notices of proposed sale, last 12 months

$8.67M

21 notices from 9 people

Shares covered

466.9K

1.04% of the company

Arranged in advance

96%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

The Jeffrey W. Dunn Living Trust Director 10b5-1 $2.93M
David & Laura Francis Joint Rev Tru/a DTD 01/03/2003 Director 10b5-1 $2.36M

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, FY2020–FY2025

+47.8%

+8.13% a year

Each share's claim on the business

−32.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $127M

over 6 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+ years60% 3–5 years8% 1–3 years20% Under 1 year13%

Quarterly turnover

13.7%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting SIBN on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
FL First Light Asset Management, LLC	8.1M	18.14%	+2.8M (+51.8%)	≤2021	8.1%
Shares held by quarter Peak holding8.1M (Q2'26) Change over 8 quarters+6.6M Share of the company18.140% First Light Asset Management, LLC's full portfolio →
B BlackRock, Inc.	3.7M	8.20%	+247.7K (+7.2%)	≤2021	0.0%
Shares held by quarter Peak holding3.9M (Q3'24) Change over 8 quarters−215.3K Share of the company8.200% BlackRock, Inc.'s full portfolio →

First Light Asset Management, LLC

8.1M

% of company

18.14%

Change vs last qtr

+2.8M (+51.8%)

Held since

≤2021

BlackRock, Inc.

3.7M

% of company

8.20%

Change vs last qtr

+247.7K (+7.2%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding SI-BONE, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting SIBN on Form N-PORT; together they hold 37.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
SC Small Cap Growth Fund American Century Mutual Funds, Inc.	$33.7M	1.9M	4.23%	0.60%	July 31, 2026
IS Impax Small Cap Fund Impax Funds Series Trust I	$23.3M	1.4M	3.18%	2.45%	June 30, 2026

Small Cap Growth Fund

American Century Mutual Funds, Inc.

Position value

$33.7M

% of company

4.23%

% of the fund

0.60%

As of

July 31, 2026

Impax Small Cap Fund

Impax Funds Series Trust I

Position value

$23.3M

% of company

3.18%

% of the fund

2.45%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding SI-BONE, 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
FJ Freund John Gordon Insider	3.7M	8.22%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company8.220% Freund John Gordon's insider activity →
FL Francis Laura Insider	747.4K	1.67%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.670% Francis Laura's insider activity →

Freund John Gordon

Insider

3.7M

% of company

8.22%

Change vs last qtr

—

Held since

—

Francis Laura

Insider

747.4K

% of company

1.67%

Change vs last qtr

—

Held since

—

10 more holders behind a free account

See every insider and 5%+ holder of SI-BONE, Inc..

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