BlackLine, Inc.
US ˙ NasdaqGS ˙ US09239B1098

SecurityBL / BlackLine, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,063,655 shares
Latest Disclosed Value $ 39,354,410
Dimensional Fund Advisors Lp reports 20.59% increase in ownership of BL / BlackLine, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,063,655 shares of BlackLine, Inc. (US:BL) valued at $39,355,235 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 882,078 shares of BlackLine, Inc.. This represents a change in shares of 20.59% during the quarter. The current value of the position is $30,643,901 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)
2026-05-07 2026-03-31 13F BLACKLINE COM 09239B109 1,063,655 181,577 20.59 39,354 -19.32 0.0018
2026-02-12 2025-12-31 13F BLACKLINE COM 09239B109 882,078 23,943 2.79 48,776 7.04 0.0102
2025-11-12 2025-09-30 13F BLACKLINE COM 09239B109 858,135 4,708 0.55 45,566 -5.70 0.0098
2025-08-12 2025-06-30 13F BLACKLINE COM 09239B109 853,427 6,104 0.72 48,322 17.78 0.0112
2025-05-13 2025-03-31 13F BLACKLINE COM 09239B109 847,323 125,492 17.39 41,027 -6.45 0.0102
2025-02-13 2024-12-31 13F BLACKLINE COM 09239B109 721,831 58,365 8.80 43,858 19.90 0.0105
2024-11-07 2024-09-30 13F BLACKLINE COM 09239B109 663,466 83,985 14.49 36,578 30.29 0.0089
2024-08-09 2024-06-30 13F BLACKLINE COM 09239B109 579,481 229,151 65.41 28,076 24.09 0.0073
2024-05-10 2024-03-31 13F BLACKLINE COM 09239B109 350,330 200,661 134.07 22,624 142.05 0.0061
2024-02-07 2023-12-31 13F BLACKLINE COM 09239B109 149,669 58,433 64.05 9,348 84.72 0.0027
2023-11-09 2023-09-30 13F BLACKLINE COM 09239B109 91,236 91,236 5,060 0.0017
2023-05-12 2023-03-31 13F BLACKLINE COM 09239B109 0 -3,574 -100.00 0 0.0000
2023-02-09 2022-12-31 13F BLACKLINE COM 09239B109 3,574 -9,281 -72.20 0 -100.00 0.0001
2022-11-10 2022-09-30 13F BLACKLINE COM 09239B109 12,855 -4,986 -27.95 770 -35.19 0.0003
2022-08-12 2022-06-30 13F BLACKLINE COM 09239B109 17,841 -128,172 -87.78 1,188 -88.89 0.0004
2022-05-13 2022-03-31 13F BLACKLINE COM 09239B109 146,013 23,068 18.76 10,692 -16.01 0.0033
2022-02-09 2021-12-31 13F BLACKLINE COM 09239B109 122,945 16,823 15.85 12,730 1.60 0.0038
2021-11-12 2021-09-30 13F BLACKLINE COM 09239B109 106,122 -1,535 -1.43 12,529 4.58 0.0040
2021-08-12 2021-06-30 13F BLACKLINE COM 09239B109 107,657 -3,620 -3.25 11,980 -0.66 0.0038
2021-05-14 2021-03-31 13F BLACKLINE COM 09239B109 111,277 -48,646 -30.42 12,059 -43.46 0.0040
2021-03-08 2020-12-31 13F/A-2 BLACKLINE COM 09239B109 159,923 -16,604 -9.41 21,330 34.80 0.0077
2021-02-11 2020-12-31 13F BLACKLINE COM 09239B109 159,923 -16,604 21,330 7,703.2622
2020-11-12 2020-09-30 13F BLACKLINE COM 09239B109 176,527 43,602 32.80 15,823 43.57 0.0067
2020-08-13 2020-06-30 13F BLACKLINE COM 09239B109 132,925 -12,968 -8.89 11,021 43.58 0.0048
2020-05-14 2020-03-31 13F BLACKLINE COM 09239B109 145,893 -1,579 -1.07 7,676 0.95 0.0040
2020-02-14 2019-12-31 13F BLACKLINE COM 09239B109 147,472 66,150 81.34 7,604 95.63 0.0028
2019-11-12 2019-09-30 13F BLACKLINE COM 09239B109 81,322 58,429 255.23 3,887 217.31 0.0015
2019-08-13 2019-06-30 13F BLACKLINE COM 09239B109 22,893 22,893 1,225 0.0005
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.