STAG Industrial, Inc.
US ˙ NYSE ˙ US85254J1025

SecuritySTAG / STAG Industrial, Inc.
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership2,549,987 shares
Latest Disclosed Value $ 91,952,548
Boston Trust Walden Corp reports 9.36% decrease in ownership of STAG / STAG Industrial, Inc.

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 2,549,987 shares of STAG Industrial, Inc. (US:STAG) valued at $91,952,531 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 2,813,180 shares of STAG Industrial, Inc.. This represents a change in shares of -9.36% during the quarter. The current value of the position is $93,125,525 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.

Upgrade to unlock premium data and export to Excel .

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 STAG INDUSTRIAL COMMON STOCK 85254J102 2,549,987 -263,193 -9.36 91,953 -11.08 0.4521
2026-01-28 2025-12-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,813,180 -132,279 -4.49 103,412 -0.51 0.4679
2025-10-17 2025-09-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,945,459 -20,373 -0.69 103,945 -3.40 0.7626
2025-07-28 2025-06-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,965,832 23,337 0.79 107,600 1.24 0.7675
2025-04-21 2025-03-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,942,495 437,527 17.47 106,283 25.45 0.7765
2025-01-24 2024-12-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,504,968 -5,787 -0.23 84,718 -13.68 0.5945
2024-10-24 2024-09-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,510,755 -41,997 -1.65 98,145 6.62 0.6828
2024-07-19 2024-06-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,552,752 25,779 1.02 92,052 -5.23 0.6828
2024-04-22 2024-03-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,526,973 -12,156 -0.48 97,137 -2.56 0.6929
2024-01-24 2023-12-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,539,129 28,304 1.13 99,686 15.05 0.7521
2023-10-18 2023-09-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,510,825 -249,314 -9.03 86,649 -12.51 0.7262
2023-07-24 2023-06-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,760,139 126,827 4.82 99,034 11.20 0.8122
2023-04-19 2023-03-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,633,312 339,036 14.78 89,059 20.14 0.7687
2023-01-20 2022-12-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,294,276 11,102 0.49 74,128 14.20 0.6518
2022-10-19 2022-09-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,283,174 246,678 12.11 64,911 3.22 0.6430
2022-07-22 2022-06-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 2,036,496 262,397 14.79 62,887 -14.27 0.5942
2022-04-20 2022-03-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 1,774,099 625,080 54.40 73,358 33.12 0.6059
2022-01-21 2021-12-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 1,149,019 2,056 0.18 55,107 22.41 0.4425
2021-10-25 2021-09-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 1,146,963 16,061 1.42 45,018 6.35 0.3986
2021-07-22 2021-06-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 1,130,902 244,217 27.54 42,330 42.04 0.3763
2021-04-21 2021-03-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 886,685 298,295 50.70 29,802 61.72 0.2886
2021-01-15 2020-12-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 588,390 -2,059 -0.35 18,428 2.36 0.1966
2020-10-14 2020-09-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 590,449 -303,545 -33.95 18,003 -31.32 0.2242
2020-07-23 2020-06-30 13F STAG INDUSTRIAL COMMON STOCK 85254J102 893,994 339,180 61.13 26,212 109.78 0.3539
2020-04-24 2020-03-31 13F/A-1 STAG INDUSTRIAL COMMON STOCK 85254J102 554,814 554,814 12,495 0.1991
2020-04-21 2020-03-31 13F STAG INDUSTRIAL COMMON STOCK 85254J102 554,814 12,495
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.