BL Stock Ownership Activity

BLACKLINE INC 13F holders

1 value investing guru has made changes to the BLACKLINE INC (BL) position according to the gurus' latest SEC quarterly report(s). The number of BL shares has been increased by 1 super investor(s).

Which gurus or hedge funds are buying BL now?

According to the latest SEC filing(s) BLACKLINE INC (BL) has been bought by Glenn W. Welling - Engaged Capital (added shares +26.21%).

To see more about who is investing in BLACKLINE INC (BL), please go to the BL ownership page.

2026 Q1 (1 result)
Glenn W. Welling
+26.21%
+284,000
+3.46%
16.68%
Current price: $28.81 22.14% Reported price*: $37.00
2025 Q4 (1 result)
Glenn W. Welling
+138.79%
+629,825
+8.88%
15.28%
Current price: $28.81 47.89% Reported price*: $55.29
2025 Q3 (2 results)
Glenn W. Welling
buy
+453,794
+5.91%
5.91%
David M. Polen
-100.00%
-4,763
-0.00%
0.00%
Current price: $28.81 45.74% AVG reported price*: $53.10
2025 Q2 (1 result)
David M. Polen
-91.36%
-50,336
-0.01%
0.00%
Current price: $28.81 49.12% Reported price*: $56.62
2025 Q1 (1 result)
David M. Polen
-12.25%
-7,692
-0.00%
0.01%
Current price: $28.81 40.50% Reported price*: $48.42
2024 Q4 (2 results)
David M. Polen
-9.39%
-6,506
-0.00%
0.01%
Glenn W. Welling
-100.00%
-609,713
-6.91%
0.00%
Current price: $28.81 52.58% AVG reported price*: $60.76
2024 Q3 (2 results)
Glenn W. Welling
buy
+609,713
+5.45%
0.00%
David M. Polen
-33.37%
-34,710
-0.00%
0.01%
Current price: $28.81 47.75% AVG reported price*: $55.14
2024 Q2 (1 result)
David M. Polen
-4.37%
-4,757
-0.00%
0.01%
Current price: $28.81 40.54% Reported price*: $48.45
2024 Q1 (2 results)
David M. Polen
-2.02%
-2,240
-0.00%
0.02%
Nathaniel Simons
-100.00%
-358,000
-0.53%
0.00%
Current price: $28.81 55.39% AVG reported price*: $64.58
2023 Q4 (2 results)
David M. Polen
-4.14%
-4,795
-0.00%
0.02%
Nathaniel Simons
-66.64%
-715,201
-1.03%
0.00%
Current price: $28.81 53.86% AVG reported price*: $62.44
2023 Q3 (2 results)
Nathaniel Simons
buy
+1,073,201
+1.63%
1.63%
David M. Polen
-1.58%
-1,860
-0.00%
0.02%
Current price: $28.81 48.06% AVG reported price*: $55.47
2023 Q2 (1 result)
David M. Polen
-3.75%
-4,580
-0.00%
0.02%
Current price: $28.81 46.47% Reported price*: $53.82
2023 Q1 (1 result)
David M. Polen
-0.69%
-851
-0.00%
0.02%
Current price: $28.81 57.10% Reported price*: $67.15
2022 Q4 (1 result)
David M. Polen
-15.82%
-23,132
-0.00%
0.02%
Current price: $28.81 57.17% Reported price*: $67.27
2022 Q3 (1 result)
David M. Polen
+10.60%
+14,015
+0.00%
0.02%
Current price: $28.81 51.90% Reported price*: $59.90
2022 Q2 (1 result)
David M. Polen
-14.54%
-22,490
-0.00%
0.02%
Current price: $28.81 56.74% Reported price*: $66.60
2022 Q1 (1 result)
David M. Polen
-3.06%
-4,879
-0.00%
0.02%
Current price: $28.81 60.65% Reported price*: $73.22
2021 Q4 (1 result)
David M. Polen
+30.96%
+37,726
+0.01%
0.03%
Current price: $28.81 72.17% Reported price*: $103.54
2021 Q3 (1 result)
David M. Polen
+9.55%
+10,624
+0.00%
0.03%
Current price: $28.81 75.60% Reported price*: $118.06
2021 Q2 (1 result)
David M. Polen
+6.42%
+6,709
+0.00%
0.02%
Current price: $28.81 74.11% Reported price*: $111.27
2021 Q1 (1 result)
David M. Polen
+24.56%
+20,607
+0.01%
0.03%
Current price: $28.81 73.42% Reported price*: $108.40
2020 Q4 (1 result)
David M. Polen
+29.39%
+19,062
+0.01%
0.03%
Current price: $28.81 78.40% Reported price*: $133.38
2020 Q3 (1 result)
David M. Polen
+89.43%
+30,615
+0.01%
0.02%
Current price: $28.81 67.85% Reported price*: $89.62
2020 Q2 (1 result)
David M. Polen
buy
+34,233
+0.01%
0.01%
Current price: $28.81 65.25% Reported price*: $82.90
30 of 30

Shares, change to shares, sold shares - split-adjusted.

Reported price - this doesn't represent the actual buy or sell price.
It is the split-adjusted price of the security as of the last day of the reported period.

Value or Price - If the security is completely sold out, we show the reported value (or price) prior to the actual period.