BlackLine, Inc.
US ˙ NasdaqGS ˙ US09239B1098

SecurityBL / BlackLine, Inc.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership7,920 shares
Latest Disclosed Value $ 293,040
ProShare Advisors LLC reports 22.63% decrease in ownership of BL / BlackLine, Inc.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 7,920 shares of BlackLine, Inc. (US:BL) valued at $293,040 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 10,236 shares of BlackLine, Inc.. This represents a change in shares of -22.63% during the quarter. The current value of the position is $227,383 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-24 2026-03-31 13F BLACKLINE COM 09239B109 7,920 -2,316 -22.63 293 -48.14 0.0004
2026-02-06 2025-12-31 13F BLACKLINE COM 09239B109 10,236 58 0.57 566 4.63 0.0010
2025-11-06 2025-09-30 13F BLACKLINE COM 09239B109 10,178 -2,083 -16.99 540 -22.19 0.0011
2025-08-07 2025-06-30 13F BLACKLINE COM 09239B109 12,261 -1,853 -13.13 694 1.61 0.0014
2025-05-08 2025-03-31 13F BLACKLINE COM 09239B109 14,114 -3,622 -20.42 683 -36.58 0.0015
2025-02-14 2024-12-31 13F BLACKLINE COM 09239B109 17,736 5,309 42.72 1,078 57.23 0.0025
2024-11-14 2024-09-30 13F BLACKLINE COM 09239B109 12,427 3,146 33.90 685 52.56 0.0017
2024-08-13 2024-06-30 13F BLACKLINE COM 09239B109 9,281 -2,636 -22.12 450 -41.61 0.0012
2024-05-08 2024-03-31 13F BLACKLINE COM 09239B109 11,917 1,959 19.67 770 23.83 0.0020
2024-02-14 2023-12-31 13F BLACKLINE COM 09239B109 9,958 2,150 27.54 622 43.42 0.0019
2023-11-13 2023-09-30 13F BLACKLINE COM 09239B109 7,808 -19 -0.24 433 2.85 0.0014
2023-08-10 2023-06-30 13F BLACKLINE COM 09239B109 7,827 830 11.86 421 -10.23 0.0012
2023-05-26 2023-03-31 13F/A-1 BLACKLINE COM 09239B109 6,997 -1,759 -20.09 470 -20.37 0.0014
2023-05-12 2023-03-31 13F BLACKLINE COM 09239B109 6,997 -1,759 470 0.0015
2023-02-02 2022-12-31 13F BLACKLINE COM 09239B109 8,756 848 10.72 589 24.26 0.0021
2022-11-07 2022-09-30 13F BLACKLINE COM 09239B109 7,908 -432 -5.18 474 -14.59 0.0018
2022-08-01 2022-06-30 13F BLACKLINE COM 09239B109 8,340 -4,934 -37.17 555 -42.84 0.0018
2022-05-10 2022-03-31 13F BLACKLINE COM 09239B109 13,274 -2,547 -16.10 971 -40.68 0.0021
2022-02-08 2021-12-31 13F BLACKLINE COM 09239B109 15,821 6,095 62.67 1,637 42.60 0.0032
2021-11-12 2021-09-30 13F BLACKLINE COM 09239B109 9,726 -4,251 -30.41 1,148 -26.17 0.0032
2021-08-13 2021-06-30 13F BLACKLINE COM 09239B109 13,977 320 2.34 1,555 5.07 0.0045
2021-05-14 2021-03-31 13F BLACKLINE COM 09239B109 13,657 2,367 20.97 1,480 -1.73 0.0047
2021-02-09 2020-12-31 13F BLACKLINE COM 09239B109 11,290 5,139 83.55 1,506 173.32 0.0056
2020-11-13 2020-09-30 13F BLACKLINE COM 09239B109 6,151 -669 -9.81 551 -2.48 0.0025
2020-08-03 2020-06-30 13F BLACKLINE COM 09239B109 6,820 6,820 565 0.0030
2020-05-15 2020-03-31 13F BLACKLINE COM 09239B109 0 -5,861 -100.00 0 -100.00
2020-02-12 2019-12-31 13F BLACKLINE COM 09239B109 5,861 988 20.27 302 29.61 0.0014
2019-11-12 2019-09-30 13F BLACKLINE COM 09239B109 4,873 975 25.01 233 11.48 0.0013
2019-08-13 2019-06-30 13F BLACKLINE COM 09239B109 3,898 3,898 209 0.0012
2019-02-14 2018-12-31 13F BLACKLINE COM 09239B109 0 -4,398 -100.00 0 -100.00
2018-11-14 2018-09-30 13F BLACKLINE COM 09239B109 4,398 4,398 248 0.0017
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.