OneStream, Inc. (OS) Insider Trading

Last 12 months

Insiders sold $8.28M and bought nothing on the open market.

All of the selling was scheduled in advance under 10b5-1 plans. No executive or director has bought shares on the open market in the last two years.

Net open-market

−$8.28M

0 buys · 11 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

0 / 5

executives and directors

Last open-market buy

None

in the last two years

Get an email when OS'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
Mar 16 – 17	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan 2 parts	59,204	$23.59 average	$1.4M	3.2%	Form 4
Mar 11	Pamela McIntyre Chief Accounting Officer	Sold10b5-1 plan	2,015	$23.68	$48k	3.5%	Form 4
Mar 11	Scott Leshinski President	Sold10b5-1 plan	7,412	$23.68	$176k	2.6%	Form 4
Feb 17	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	60,000	$23.46	$1.41M	3.3%	Form 4
Jan 16	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	120,000	$23.63	$2.84M	6.3%	Form 4
Jan 8	Pamela McIntyre Chief Accounting Officer	Sold10b5-1 plan	6,505	$23.58	$153k	10.0%	Form 4
Jan 6	Jonathan D Mariner Director	Sold10b5-1 plan 2 parts	7,956	$23.31 average	$185k	53%	Form 4
Dec 16, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	40,000	$17.21	$688k	2.2%	Form 4
Dec 15, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	9,571	$17.73	$170k	4.4%	Form 4
Dec 2, 2025	Jonathan D Mariner Director	Sold10b5-1 plan	18,423	$20.90	$385k	55%	Form 4
Nov 17, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	40,000	$20.94	$838k	2.2%	Form 4
Oct 16, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan 2 parts	40,000	$16.85 average	$674k	2.2%	Form 4
Sep 19, 2025	John Kinzer Director	Sold10b5-1 plan	30,000	$20.00	$600k	81%	Form 4
Sep 16, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	40,000	$18.69	$748k	2.2%	Form 4
Sep 15, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	8,943	$19.03	$170k	3.9%	Form 4
Sep 3, 2025	Jonathan D Mariner Director	Sold10b5-1 plan	141	$20.07	$3k	0.4%	Form 4
Aug 18, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	20,000	$21.56	$431k	1.1%	Form 4
Aug 4, 2025	Jonathan D Mariner Director	Sold10b5-1 plan	6,630	$23.53	$156k	16%	Form 4
Jul 25, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	25,000	$25.00	$625k	9.5%	Form 4
Jul 18, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	20,000	$25.12	$502k	1.1%	Form 4
Jul 7, 2025	Jonathan D Mariner Director	Sold10b5-1 plan	6,630	$26.59	$176k	14%	Form 4
Jun 25, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	25,000	$26.77	$669k	9.5%	Form 4
Jun 20, 2025	John Kinzer Director	Sold10b5-1 plan 2 parts	30,000	$28.26 average	$848k	81%	Form 4
Jun 18, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	20,000	$28.28	$566k	1.1%	Form 4
Jun 16, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	9,354	$27.90	$261k	3.8%	Form 4
Jun 11, 2025	William A Koefoed Chief Financial Officer	SoldNo plan	6,501	$28.23	$184k	2.6%	Form 4
Jun 11, 2025	Ken Hohenstein Chief Revenue Officer	SoldNo plan	6,280	$28.23	$177k	0.3%	Form 4
Jun 11, 2025	Craig Colby Other	SoldNo plan	6,279	$28.23	$177k	1.6%	Form 4
Jun 11, 2025	Thomas Anthony Shea CEO and President	SoldNo plan	9,913	$28.23	$280k	2.0%	Form 4
Jun 2, 2025	Jonathan D Mariner Director	Sold10b5-1 plan	6,631	$27.90	$185k	12%	Form 4
May 27, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	25,000	$28.76	$719k	9.0%	Form 4
May 19, 2025	Ken Hohenstein Chief Revenue Officer	Sold10b5-1 plan	20,000	$27.67	$553k	1.1%	Form 4
May 9, 2025	Craig Colby Large holder	Sold10b5-1 plan 2 parts	280,000	$25.50 average	$7.14M	42%	Form 4
Apr 9, 2025	John Kinzer Director	Sold10b5-1 plan	40,000	$20.28	$811k	100%	Form 4
Feb 18, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	10,000	$25.04	$250k	100%	Form 4
Jan 15, 2025	William A Koefoed Chief Financial Officer	Sold10b5-1 plan	10,000	$26.57	$266k	100%	Form 4
Dec 13, 2024	Craig Colby President	Sold10b5-1 plan 2 parts	280,000	$29.71 average	$8.32M	63%	Form 4
Dec 13, 2024	William A Koefoed Chief Financial Officer	Sold10b5-1 plan 2 parts	13,765	$30.00 average	$413k	100%	Form 4
Nov 27, 2024	KKR Group Co. Inc. Large holder	SoldNo plan 10 parts	956,462	$29.99 average	$28.7M	100%	Form 4
Nov 27, 2024	KKR Associates Group L.p. Large holder	SoldNo plan 10 parts	956,462	$29.99 average	$28.7M	100%	Form 4

Mar 16 – 1710b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 59,204 at avg $23.59
$1.4M
3.2% of stake
Mar 1110b5-1 plan
Pamela McIntyre
Chief Accounting Officer · sold 2,015 at $23.68
$48k
3.5% of stake
Mar 1110b5-1 plan
Scott Leshinski
President · sold 7,412 at $23.68
$176k
2.6% of stake
Feb 1710b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 60,000 at $23.46
$1.41M
3.3% of stake
Jan 1610b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 120,000 at $23.63
$2.84M
6.3% of stake
Jan 810b5-1 plan
Pamela McIntyre
Chief Accounting Officer · sold 6,505 at $23.58
$153k
10.0% of stake
Jan 610b5-1 plan
Jonathan D Mariner
Director · sold 7,956 at avg $23.31
$185k
53% of stake
Dec 16, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 40,000 at $17.21
$688k
2.2% of stake
Dec 15, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 9,571 at $17.73
$170k
4.4% of stake
Dec 2, 202510b5-1 plan
Jonathan D Mariner
Director · sold 18,423 at $20.90
$385k
55% of stake
Nov 17, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 40,000 at $20.94
$838k
2.2% of stake
Oct 16, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 40,000 at avg $16.85
$674k
2.2% of stake
Sep 19, 202510b5-1 plan
John Kinzer
Director · sold 30,000 at $20.00
$600k
81% of stake
Sep 16, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 40,000 at $18.69
$748k
2.2% of stake
Sep 15, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 8,943 at $19.03
$170k
3.9% of stake
Sep 3, 202510b5-1 plan
Jonathan D Mariner
Director · sold 141 at $20.07
$3k
0.4% of stake
Aug 18, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 20,000 at $21.56
$431k
1.1% of stake
Aug 4, 202510b5-1 plan
Jonathan D Mariner
Director · sold 6,630 at $23.53
$156k
16% of stake
Jul 25, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 25,000 at $25.00
$625k
9.5% of stake
Jul 18, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 20,000 at $25.12
$502k
1.1% of stake
Jul 7, 202510b5-1 plan
Jonathan D Mariner
Director · sold 6,630 at $26.59
$176k
14% of stake
Jun 25, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 25,000 at $26.77
$669k
9.5% of stake
Jun 20, 202510b5-1 plan
John Kinzer
Director · sold 30,000 at avg $28.26
$848k
81% of stake
Jun 18, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 20,000 at $28.28
$566k
1.1% of stake
Jun 16, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 9,354 at $27.90
$261k
3.8% of stake
Jun 11, 2025No plan
William A Koefoed
Chief Financial Officer · sold 6,501 at $28.23
$184k
2.6% of stake
Jun 11, 2025No plan
Ken Hohenstein
Chief Revenue Officer · sold 6,280 at $28.23
$177k
0.3% of stake
Jun 11, 2025No plan
Craig Colby
Other · sold 6,279 at $28.23
$177k
1.6% of stake
Jun 11, 2025No plan
Thomas Anthony Shea
CEO and President · sold 9,913 at $28.23
$280k
2.0% of stake
Jun 2, 202510b5-1 plan
Jonathan D Mariner
Director · sold 6,631 at $27.90
$185k
12% of stake
May 27, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 25,000 at $28.76
$719k
9.0% of stake
May 19, 202510b5-1 plan
Ken Hohenstein
Chief Revenue Officer · sold 20,000 at $27.67
$553k
1.1% of stake
May 9, 202510b5-1 plan
Craig Colby
Large holder · sold 280,000 at avg $25.50
$7.14M
42% of stake
Apr 9, 202510b5-1 plan
John Kinzer
Director · sold 40,000 at $20.28
$811k
100% of stake
Feb 18, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 10,000 at $25.04
$250k
100% of stake
Jan 15, 202510b5-1 plan
William A Koefoed
Chief Financial Officer · sold 10,000 at $26.57
$266k
100% of stake
Dec 13, 202410b5-1 plan
Craig Colby
President · sold 280,000 at avg $29.71
$8.32M
63% of stake
Dec 13, 202410b5-1 plan
William A Koefoed
Chief Financial Officer · sold 13,765 at avg $30.00
$413k
100% of stake
Nov 27, 2024No plan
KKR Group Co. Inc.
Large holder · sold 956,462 at avg $29.99
$28.7M
100% of stake
Nov 27, 2024No plan
KKR Associates Group L.p.
Large holder · sold 956,462 at avg $29.99
$28.7M
100% 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 OS, 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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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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