Blackline BL Insider Ownership

NASDAQ BL

$31.23 +1.12 (+3.72%)

At close: Oct 20, 2026 · 4:00 PM EDT

Insider Holdings by Owner

2.51Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

10.36%

▲+0.015% pp QoQ

Shares Held by Insiders

6.06Mn

filed for Sep 2026

▲+0.14% QoQ

Shares Outstanding

58.53Mn

58,529,000 shares

Direct Holdings

1.95Mn

Indirect: 4.11Mn

Net Shares Traded (QoQ)

+8.55K

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 5, 2026

In the last 12 months, insiders at Blackline made open-market sales of $2.49 million (77.57K shares) and bought no shares on the open market.

Blackline's open-market sales in the past 12 months came from 5 insiders; no insider bought.
Therese Tucker (Director) sold the most Blackline stock on the open market over the past 12 months, $2.24 million (70K shares), most recently on August 24, 2026.
Blackline's latest insider trade on the open market was a sale of 780 shares for $26,247 by Michelle D. Stalick (Chief Accounting Officer) on August 27, 2026.
Beyond open-market trades, insiders at Blackline received 461.3K shares in stock awards, acquired 194.49K shares through option exercises and conversions, gave up 186.37K shares to cover taxes or exercise prices and gave away 27.77K shares as gifts in the last 12 months.
Per Business Quant data, Blackline insiders hold 6.06Mn shares in total based on their latest Form 4 filings, or 10.36% of the 58.53Mn shares outstanding; that total is up 0.14% from 6.05Mn shares at the end of Q2 2026 and up 7.96% from 5.61Mn shares at the end of Q3 2025.
By type of ownership, BL insiders hold 32.13% of their shares directly (1.95Mn shares) and 67.87% indirectly (4.11Mn shares).
Holdings in Blackline stock are reported by 22 insiders, the officers, directors and 10% owners who have filed a Form 4 in the past two years.
Blackline's three biggest insider holders are Therese Tucker (Director, 4.45Mn shares), Owen Ryan (Chief Executive Officer, 390.91K shares) and Mark Partin (Chief Financial Officer, 209.45K shares), based on their latest Form 4 filings.
Therese Tucker alone accounts for 73.47% of the shares held by Blackline insiders.
Over the trailing 12 months, 20 insiders reported transactions in BL stock across 64 Form 4 filings.
These insider figures for Blackline are based on Form 4 filings through September 4, 2026.

Form 4 Holdings

Insiders Holding BL

Insiders 27

Shares held 2.51Mn

Of outstanding 4.29%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Mark Partin	Chief Financial Officer	399,858	0	399,858	15.9%	24 Feb, 2025
2	Owen Ryan	Chief Executive Officer	390,911	0	390,911	15.6%	24 Aug, 2026
3	Therese Tucker	Founder	381,557	0	381,557	15.2%	26 Aug, 2026
4	Marc Huffman	Chief Executive Officer	306,809	0	306,809	12.2%	23 Feb, 2023
5	Karole Morgan-Prager	Chief Legal And Administrative	160,209	0	160,209	6.4%	24 Aug, 2026
6	Jeremy Ung	Chief Technology Officer	134,805	0	134,805	5.4%	24 Aug, 2026
7	Patrick Villanova	Chief Financial Officer	131,812	0	131,812	5.3%	04 Sep, 2026
8	Jimmy C Duan	Chief Customer Officer	119,907	0	119,907	4.8%	24 Aug, 2026
9	Houten Stuart Van	Chief Commercial Officer	106,966	0	106,966	4.3%	24 Aug, 2026
10	Mark Woodhams	Chief Revenue Officer	61,390	0	61,390	2.4%	22 May, 2025
11	Peter Hirsch	Chief Technology Officer	56,055	0	56,055	2.2%	22 May, 2023
12	Thomas Unterman	Director	0	41,835	41,835	1.7%	28 Oct, 2025
13	Michelle D Stalick	Chief Accounting Officer	34,712	0	34,712	1.4%	28 Aug, 2026
14	Sophia Velastegui	Director	25,946	0	25,946	1.0%	08 May, 2026
15	David J Henshall	Director	22,794	0	22,794	0.9%	08 May, 2026
16	Brunilda Rios	Director	18,115	0	18,115	0.7%	08 May, 2026
17	Barbara Whye	Director	16,969	0	16,969	0.7%	08 May, 2026
18	Mika Yamamoto	Director	16,692	0	16,692	0.7%	08 Jun, 2026
19	Camille Drummond	Director	13,553	0	13,553	0.5%	08 May, 2026
20	Kevin B Thompson	Director	11,000	0	11,000	0.4%	01 Mar, 2024
21	Scott Davidson	Director	10,860	0	10,860	0.4%	08 May, 2026
22	Saranga Balaji	Director	9,807	0	9,807	0.4%	08 May, 2026
23	Amit Yoran	Director	7,923	0	7,923	0.3%	10 May, 2024
24	Gregory Hughes	Director	7,755	0	7,755	0.3%	22 May, 2026
25	Storm Duncan	Director	7,338	0	7,338	0.3%	08 May, 2026
26	Megan Prichard	Director	7,338	0	7,338	0.3%	08 May, 2026
27	William Raymond Wagner	Director	5,681	0	5,681	0.2%	10 May, 2024

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,434 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
02 Sep, 2026	Patrick Villanova	Chief Financial Officer	Acquired M	750	$14.00	$10.50K	131,812	Direct
02 Sep, 2026	Patrick Villanova	Chief Financial Officer	Disposed M	750	$0.00	$0	0	Direct
27 Aug, 2026	Michelle D Stalick	Chief Accounting Officer	Disposed S	780	$33.65	$26.25K	34,712	Direct
24 Aug, 2026	Therese Tucker	Director	Acquired M	70,000	$14.00	$980.00K	424,997	Direct
24 Aug, 2026	Therese Tucker	Director	Acquired M	26,560	$14.00	$371.84K	451,557	Direct
24 Aug, 2026	Therese Tucker	Director	Disposed S	70,000	$31.96	$2.24Mn	381,557	Direct
24 Aug, 2026	Therese Tucker	Director	Disposed M	70,000	$0.00	$0	26,560	Direct
24 Aug, 2026	Therese Tucker	Director	Disposed M	26,560	$0.00	$0	0	Direct
20 Aug, 2026	Owen Ryan	Chief Executive Officer	Disposed F	2,235	$31.92	$71.34K	395,376	Direct
20 Aug, 2026	Karole Morgan-Prager	Chief Legal And Administrative	Disposed F	778	$31.92	$24.83K	162,156	Direct
20 Aug, 2026	Jeremy Ung	Chief Technology Officer	Disposed F	1,388	$31.92	$44.30K	135,681	Direct
20 Aug, 2026	Michelle D Stalick	Chief Accounting Officer	Disposed F	143	$31.92	$4.56K	36,220	Direct
20 Aug, 2026	Jimmy C Duan	Chief Customer Officer	Disposed F	1,190	$31.92	$37.98K	120,658	Direct
20 Aug, 2026	Houten Stuart Van	Chief Commercial Officer	Disposed F	1,720	$31.92	$54.90K	106,966	Direct
20 Aug, 2026	Patrick Villanova	Chief Financial Officer	Disposed F	260	$31.92	$8.30K	132,562	Direct
20 Aug, 2026	Patrick Villanova	Chief Financial Officer	Disposed F	300	$31.92	$9.58K	132,262	Direct
20 Aug, 2026	Jimmy C Duan	Chief Customer Officer	Disposed F	751	$31.92	$23.97K	119,907	Direct
20 Aug, 2026	Michelle D Stalick	Chief Accounting Officer	Disposed F	161	$31.92	$5.14K	36,059	Direct
20 Aug, 2026	Karole Morgan-Prager	Chief Legal And Administrative	Disposed F	884	$31.92	$28.22K	161,272	Direct
20 Aug, 2026	Owen Ryan	Chief Executive Officer	Disposed F	2,027	$31.92	$64.70K	393,349	Direct

Showing 1 to 20 of 1,434 transactions