Pulse Biosciences, Inc.
US ˙ NasdaqCM ˙ US74587B1017

SecurityPLSE / Pulse Biosciences, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership456,927 shares
Latest Disclosed Value $ 9,865,054
State Street Corp reports 2.21% increase in ownership of PLSE / Pulse Biosciences, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 456,927 shares of Pulse Biosciences, Inc. (US:PLSE) valued at $9,865,054 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 447,067 shares of Pulse Biosciences, Inc.. This represents a change in shares of 2.21% during the quarter. The current value of the position is $12,309,613 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)
2026-05-15 2026-03-31 13F PULSE BIOSCIENCES COM 74587B101 456,927 9,860 2.21 9,865 60.72 0.0003
2026-02-13 2025-12-31 13F PULSE BIOSCIENCES COM 74587B101 447,067 25,187 5.97 6,138 -17.80 0.0002
2025-11-14 2025-09-30 13F PULSE BIOSCIENCES COM 74587B101 421,880 2,624 0.63 7,467 18.04 0.0003
2025-08-14 2025-06-30 13F PULSE BIOSCIENCES COM 74587B101 419,256 12 0.00 6,327 -6.21 0.0002
2025-05-15 2025-03-31 13F PULSE BIOSCIENCES COM 74587B101 419,244 -55,006 -11.60 6,746 -18.30 0.0003
2025-02-14 2024-12-31 13F PULSE BIOSCIENCES COM 74587B101 474,250 12,917 2.80 8,257 2.04 0.0003
2024-11-14 2024-09-30 13F PULSE BIOSCIENCES COM 74587B101 461,333 69,696 17.80 8,092 84.64 0.0003
2024-08-14 2024-06-30 13F PULSE BIOSCIENCES COM 74587B101 391,637 41,897 11.98 4,382 43.86 0.0002
2024-05-15 2024-03-31 13F PULSE BIOSCIENCES COM 74587B101 349,740 40,220 12.99 3,046 -19.59 0.0001
2024-02-14 2023-12-31 13F PULSE BIOSCIENCES COM 74587B101 309,520 25,284 8.90 3,789 230.83 0.0002
2023-11-14 2023-09-30 13F PULSE BIOSCIENCES COM 74587B101 284,236 -399 -0.14 1,145 -44.04 0.0001
2023-08-14 2023-06-30 13F PULSE BIOSCIENCES COM 74587B101 284,635 216,534 317.96 2,047 797.37 0.0001
2023-05-15 2023-03-31 13F PULSE BIOSCIENCES COM 74587B101 68,101 0 0.00 229 21.28 0.0000
2023-05-15 2022-12-31 13F/A-99 PULSE BIOSCIENCES COM 74587B101 68,101 17,400 34.32 189 60.68 0.0000
2023-05-15 2022-12-31 13F PULSE BIOSCIENCES COM 74587B101 68,101 17,400 189 0.0000
2022-11-15 2022-09-30 13F PULSE BIOSCIENCES COM 74587B101 50,701 0 0.00 117 50.00 0.0000
2022-08-15 2022-06-30 13F PULSE BIOSCIENCES COM 74587B101 50,701 -193,524 -79.24 78 -93.43 0.0000
2022-05-16 2022-03-31 13F PULSE BIOSCIENCES COM 74587B101 244,225 2,310 0.95 1,187 -66.87 0.0001
2022-02-14 2021-12-31 13F PULSE BIOSCIENCES COM 74587B101 241,915 -1,811 -0.74 3,583 -31.93 0.0002
2021-11-15 2021-09-30 13F PULSE BIOSCIENCES COM 74587B101 243,726 107 0.04 5,264 31.76 0.0003
2021-08-16 2021-06-30 13F PULSE BIOSCIENCES COM 74587B101 243,619 14,050 6.12 3,995 -26.51 0.0002
2021-07-09 2021-03-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 229,569 -399 -0.17 5,436 -0.93 0.0003
2021-05-17 2021-03-31 13F PULSE BIOSCIENCES COM 74587B101 229,569 -399 5,436 0.0003
2021-02-16 2020-12-31 13F PULSE BIOSCIENCES COM 74587B101 229,968 307 0.13 5,487 102.62 0.0003
2020-11-10 2020-09-30 13F PULSE BIOSCIENCES COM 74587B101 229,661 -1,675 -0.72 2,708 11.90 0.0002
2020-08-14 2020-06-30 13F PULSE BIOSCIENCES COM 74587B101 231,336 41,522 21.88 2,420 78.07 0.0002
2020-06-19 2020-03-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 189,814 -630 -0.33 1,359 -46.79 0.0001
2020-05-11 2020-03-31 13F PULSE BIOSCIENCES COM 74587B101 189,814 -630 1,359 119.3476
2020-02-06 2019-12-31 13F PULSE BIOSCIENCES COM 74587B101 190,444 7,153 3.90 2,554 -9.75 0.0002
2019-11-14 2019-09-30 13F PULSE BIOSCIENCES COM 74587B101 183,291 19,240 11.73 2,830 30.72 0.0002
2019-08-14 2019-06-30 13F PULSE BIOSCIENCES COM 74587B101 164,051 9,094 5.87 2,165 -20.58 0.0002
2019-05-15 2019-03-31 13F PULSE BIOSCIENCES COM 74587B101 154,957 12,721 8.94 2,726 67.24 0.0002
2019-02-12 2018-12-31 13F PULSE BIOSCIENCES COM 74587B101 142,236 -5,918 -3.99 1,630 -22.45 0.0001
2018-11-09 2018-09-30 13F PULSE BIOSCIENCES Common equity shares 74587B101 148,154 15,462 11.65 2,102 4.58 0.0002
2018-08-14 2018-06-30 13F PULSE BIOSCIENCES Common equity shares 74587B101 132,692 -2,424 -1.79 2,010 9.96 0.0002
2018-05-15 2018-03-31 13F PULSE BIOSCIENCES Common equity shares 74587B101 135,116 -3,038 -2.20 1,828 -43.91 0.0002
2018-02-14 2017-12-31 13F PULSE BIOSCIENCES Common equity shares 74587B101 138,154 -548 -0.40 3,259 26.12 0.0003
2017-11-14 2017-09-30 13F PULSE BIOSCIENCES Common equity shares 74587B101 138,702 7,265 5.53 2,584 -43.06 0.0002
2017-08-14 2017-06-30 13F PULSE BIOSCIENCES Common equity shares 74587B101 131,437 131,437 4,538 0.0004
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.