Box, Inc.
US ˙ NYSE ˙ US10316T1043

SecurityBOX / Box, Inc.
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership32,966 shares
Latest Disclosed Value $ 779,316
Summit Trail Advisors, Llc reports 18.55% increase in ownership of BOX / Box, Inc.

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 32,966 shares of Box, Inc. (US:BOX) valued at $779,316 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 27,808 shares of Box, Inc.. This represents a change in shares of 18.55% during the quarter. The current value of the position is $879,863 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)
2026-05-12 2026-03-31 13F BOX CL A 10316T104 32,966 5,158 18.55 779 -6.26 0.0112
2026-02-17 2025-12-31 13F BOX CL A 10316T104 27,808 -482 -1.70 832 -8.88 0.0144
2025-11-14 2025-09-30 13F BOX CL A 10316T104 28,290 852 3.11 913 -2.67 0.0126
2025-08-14 2025-06-30 13F BOX CL A 10316T104 27,438 -66 -0.24 938 10.50 0.0161
2025-04-28 2025-03-31 13F BOX CL A 10316T104 27,504 908 3.41 849 0.95 0.0280
2025-01-29 2024-12-31 13F BOX CL A 10316T104 26,596 6,017 29.24 840 24.81 0.0310
2024-11-12 2024-09-30 13F BOX CL A 10316T104 20,579 220 1.08 674 25.09 0.0167
2024-08-13 2024-06-30 13F Box Inc CL A CL A 10316T104 20,359 265 1.32 538 -5.45 0.0141
2024-04-23 2024-03-31 13F BOX CL A 10316T104 20,094 -19,545 -49.31 569 -43.94 0.0151
2024-02-06 2023-12-31 13F BOX CL A 10316T104 39,639 25 0.06 1,015 5.84 0.0336
2023-10-30 2023-09-30 13F BOX CL A 10316T104 39,614 -8,130 -17.03 959 -31.60 0.0353
2023-07-25 2023-06-30 13F BOX CL A 10316T104 47,744 -30 -0.06 1,403 9.62 0.0529
2023-05-04 2023-03-31 13F BOX CL A 10316T104 47,774 260 0.55 1,280 -13.52 0.0516
2023-02-07 2022-12-31 13F Box Inc CL A COM 10316T104 47,514 -6 -0.01 1,479 27.61 0.0657
2022-11-10 2022-09-30 13F Box Inc CL A Stock 10316T104 47,520 -69 -0.14 1,159 -3.09 0.0627
2022-08-09 2022-06-30 13F Box Inc CL A COM 10316T104 47,589 -48,968 -50.71 1,196 -57.38 0.0739
2022-05-16 2022-03-31 13F Box Inc CL A EQUITY 10316T104 96,557 96,557 2,806 0.2269
2021-02-16 2020-12-31 13F Merck & Co Inc New Com Equity 10316T104 0 -9,092 -100.00 0 -100.00
2020-11-16 2020-09-30 13F Merck & Co Inc New Com Equity 10316T104 9,092 9,092 726 0.1404
2018-11-14 2018-09-30 13F Box Inc CL A EQUITY 10316T104 0 -1,424 -100.00 0 -100.00
2018-08-10 2018-06-30 13F Box Inc CL A EQUITY 10316T104 1,424 1,424 36 0.0126
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.