Calix Inc. Insider Trading

CALX

Last 12 months

Insiders sold $9.78M and bought nothing on the open market.

51% of the selling was scheduled in advance under 10b5-1 plans. Chief Financial Officer Cory Sindelar sold $3.27M on Nov 6, 2025, 40% of their stake, outside a plan. The last open-market buy by an executive or director was in Aug 2023.

Net open-market

−$9.78M

0 buys · 5 sales

Under a 10b5-1 plan

51%

of the value sold

Insiders who bought / sold

0 / 3

executives and directors

Last open-market buy

Aug 2023

Aug 14, 2023

Get an email when CALX's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Jul 27	Carl Russo Director	Sold10b5-1 plan	75,000	$36.20	$2.71M	1.3%	Form 4
Apr 27	Carl Russo Director	Sold10b5-1 plan 2 parts	25,000	$43.26 average	$1.08M	0.4%	Form 4
Feb 3	Carl Russo Director	Sold10b5-1 plan 2 parts	25,000	$47.27 average	$1.18M	0.4%	Form 4
Nov 10, 2025	Shane Todd Marshall Eleniak Chief Product Officer	SoldNo plan	24,000	$64.14	$1.54M	100%	Form 4
Nov 6, 2025	Cory Sindelar Chief Financial Officer	SoldNo plan	50,000	$65.30	$3.27M	40%	Form 4
Nov 4, 2025	Shane Todd Marshall Eleniak Chief Product Officer	SoldNo plan	50,000	$65.34	$3.27M	100%	Form 4
Nov 4, 2025	Carl Russo Director	Sold10b5-1 plan 4 parts	420,000	$64.09 average	$26.9M	6.9%	Form 4
Oct 30, 2025 – Nov 3, 2025	Michael Weening President & CEO	Sold10b5-1 plan 3 parts	274,000	$65.92 average	$18.1M	94%	Form 4
Oct 30, 2025 – Oct 31, 2025	Cory Sindelar Chief Financial Officer	Sold10b5-1 plan 2 parts	20,000	$67.50 average	$1.35M	21%	Form 4
Sep 10, 2025 – Sep 11, 2025	Michael Weening President & CEO	Sold10b5-1 plan 3 parts	176,000	$62.15 average	$10.9M	92%	Form 4
Sep 4, 2025	Michael Weening President & CEO	Sold10b5-1 plan	24,000	$60.00	$1.44M	60%	Form 4
Aug 28, 2025	Michael Weening President & CEO	Sold10b5-1 plan	126,000	$60.00	$7.56M	89%	Form 4
Aug 28, 2025	Cory Sindelar Chief Financial Officer	Sold10b5-1 plan	10,000	$60.00	600K	12%	Form 4
Aug 4, 2025	Michael Weening President & CEO	Sold10b5-1 plan	74,000	$57.00	$4.22M	82%	Form 4
Jul 28, 2025	Carl Russo Director	Sold10b5-1 plan	25,000	$55.40	$1.39M	0.4%	Form 4
Jul 22, 2025 – Jul 23, 2025	Michael Weening President & CEO	Sold10b5-1 plan 3 parts	200,000	$55.62 average	$11.1M	93%	Form 4
Jul 23, 2025	Cory Sindelar Chief Financial Officer	Sold10b5-1 plan	10,000	$56.00	560K	12%	Form 4
Jun 30, 2025	Cory Sindelar Chief Financial Officer	Sold10b5-1 plan	10,000	$52.00	520K	12%	Form 4
Jun 2, 2025	Michael Weening President & CEO	Sold10b5-1 plan	100,000	$46.59	$4.66M	86%	Form 4
Apr 28, 2025	Carl Russo Director	Sold10b5-1 plan	25,000	$39.59	990K	0.4%	Form 4
Feb 27, 2025	Carl Russo Director	Sold10b5-1 plan	25,000	$38.15	954K	0.4%	Form 4

Jul 2710b5-1 plan
Carl Russo
Director · sold 75,000 at $36.20
$2.71M
1.3% of stake
Apr 2710b5-1 plan
Carl Russo
Director · sold 25,000 at avg $43.26
$1.08M
0.4% of stake
Feb 310b5-1 plan
Carl Russo
Director · sold 25,000 at avg $47.27
$1.18M
0.4% of stake
Nov 10, 2025No plan
Shane Todd Marshall Eleniak
Chief Product Officer · sold 24,000 at $64.14
$1.54M
100% of stake
Nov 6, 2025No plan
Cory Sindelar
Chief Financial Officer · sold 50,000 at $65.30
$3.27M
40% of stake
Nov 4, 2025No plan
Shane Todd Marshall Eleniak
Chief Product Officer · sold 50,000 at $65.34
$3.27M
100% of stake
Nov 4, 202510b5-1 plan
Carl Russo
Director · sold 420,000 at avg $64.09
$26.9M
6.9% of stake
Oct 30, 2025 – Nov 3, 202510b5-1 plan
Michael Weening
President & CEO · sold 274,000 at avg $65.92
$18.1M
94% of stake
Oct 30, 2025 – Oct 31, 202510b5-1 plan
Cory Sindelar
Chief Financial Officer · sold 20,000 at avg $67.50
$1.35M
21% of stake
Sep 10, 2025 – Sep 11, 202510b5-1 plan
Michael Weening
President & CEO · sold 176,000 at avg $62.15
$10.9M
92% of stake
Sep 4, 202510b5-1 plan
Michael Weening
President & CEO · sold 24,000 at $60.00
$1.44M
60% of stake
Aug 28, 202510b5-1 plan
Michael Weening
President & CEO · sold 126,000 at $60.00
$7.56M
89% of stake
Aug 28, 202510b5-1 plan
Cory Sindelar
Chief Financial Officer · sold 10,000 at $60.00
600K
12% of stake
Aug 4, 202510b5-1 plan
Michael Weening
President & CEO · sold 74,000 at $57.00
$4.22M
82% of stake
Jul 28, 202510b5-1 plan
Carl Russo
Director · sold 25,000 at $55.40
$1.39M
0.4% of stake
Jul 22, 2025 – Jul 23, 202510b5-1 plan
Michael Weening
President & CEO · sold 200,000 at avg $55.62
$11.1M
93% of stake
Jul 23, 202510b5-1 plan
Cory Sindelar
Chief Financial Officer · sold 10,000 at $56.00
560K
12% of stake
Jun 30, 202510b5-1 plan
Cory Sindelar
Chief Financial Officer · sold 10,000 at $52.00
520K
12% of stake
Jun 2, 202510b5-1 plan
Michael Weening
President & CEO · sold 100,000 at $46.59
$4.66M
86% of stake
Apr 28, 202510b5-1 plan
Carl Russo
Director · sold 25,000 at $39.59
990K
0.4% of stake
Feb 27, 202510b5-1 plan
Carl Russo
Director · sold 25,000 at $38.15
954K
0.4% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch CALX, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

CALX is in 75 US ETFs. The largest of them, with CALX's weight in each:

Spot a number that looks wrong? Check it in CALX's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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