Pulse Biosciences, Inc.
US ˙ NasdaqCM ˙ US74587B1017

SecurityPLSE / Pulse Biosciences, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership43,165 shares
Latest Disclosed Value $ 931,932
Morgan Stanley reports 1.81% increase in ownership of PLSE / Pulse Biosciences, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 43,165 shares of Pulse Biosciences, Inc. (US:PLSE) valued at $931,932 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 42,397 shares of Pulse Biosciences, Inc.. This represents a change in shares of 1.81% during the quarter. The current value of the position is $1,162,865 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 43,165 768 1.81 932 59.97 0.0001
2026-05-27 2025-12-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 42,397 4,764 12.66 582 -12.61 0.0000
2026-02-13 2025-12-31 13F PULSE BIOSCIENCES COM 74587B101 42,397 4,764 582 0.0000
2026-05-27 2025-09-30 13F/A-1 PULSE BIOSCIENCES COM 74587B101 37,633 -58,083 -60.68 666 -53.88 0.0000
2025-11-14 2025-09-30 13F PULSE BIOSCIENCES COM 74587B101 37,633 -58,083 666 0.0000
2025-08-15 2025-06-30 13F PULSE BIOSCIENCES COM 74587B101 95,716 45,291 89.82 1,444 78.05 0.0001
2025-05-15 2025-03-31 13F PULSE BIOSCIENCES COM 74587B101 50,425 -11,310 -18.32 811 -24.49 0.0001
2025-05-15 2024-12-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 61,735 -8,436 -12.02 1,075 -12.68 0.0001
2025-02-14 2024-12-31 13F PULSE BIOSCIENCES COM 74587B101 61,735 -8,436 1,075 0.0001
2025-05-14 2024-09-30 13F/A-2 PULSE BIOSCIENCES COM 74587B101 70,171 30,128 75.24 1,231 174.55 0.0001
2025-02-14 2024-09-30 13F/A-1 PULSE BIOSCIENCES COM 74587B101 70,171 30,128 1,231 0.0001
2024-11-14 2024-09-30 13F PULSE BIOSCIENCES COM 74587B101 70,171 30,128 1,231 0.0000
2025-05-14 2024-06-30 13F/A-2 PULSE BIOSCIENCES COM 74587B101 40,043 3,059 8.27 448 39.13 0.0000
2024-10-17 2024-06-30 13F/A-1 PULSE BIOSCIENCES COM 74587B101 40,043 3,059 448 0.0000
2024-08-14 2024-06-30 13F PULSE BIOSCIENCES COM 74587B101 40,043 3,059 448 0.0000
2024-10-17 2024-03-31 13F/A-2 PULSE BIOSCIENCES COM 74587B101 36,984 -8,454 -18.61 322 -42.09 0.0000
2024-08-16 2024-03-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 36,984 -8,454 322 0.0000
2024-05-15 2024-03-31 13F PULSE BIOSCIENCES COM 74587B101 36,984 -8,454 322 0.0000
2024-08-16 2023-12-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 45,438 19,044 72.15 556 424.53 0.0000
2024-02-13 2023-12-31 13F PULSE BIOSCIENCES COM 74587B101 45,438 19,044 556 0.0000
2023-11-15 2023-09-30 13F PULSE BIOSCIENCES COM 74587B101 26,394 -4,537 -14.67 106 -52.25 0.0000
2023-08-14 2023-06-30 13F PULSE BIOSCIENCES COM 74587B101 30,931 16,785 118.66 222 372.34 0.0000
2023-05-15 2023-03-31 13F PULSE BIOSCIENCES COM 74587B101 14,146 -5,254 -27.08 48 -11.32 0.0000
2023-02-14 2022-12-31 13F PULSE BIOSCIENCES COM 74587B101 19,400 2,364 13.88 54 35.90 0.0000
2022-11-14 2022-09-30 13F PULSE BIOSCIENCES COM 74587B101 17,036 -281,593 -94.30 39 -91.47 0.0000
2022-10-27 2022-06-30 13F/A-1 PULSE BIOSCIENCES COM 74587B101 298,629 34,529 13.07 457 -64.44 0.0001
2022-08-15 2022-06-30 13F PULSE BIOSCIENCES COM 74587B101 298,629 34,529 457 0.0000
2022-10-27 2022-03-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 264,100 210,781 395.32 1,285 62.86 0.0002
2022-05-13 2022-03-31 13F PULSE BIOSCIENCES COM 74587B101 264,100 210,781 1,285 0.0002
2022-02-14 2021-12-31 13F PULSE BIOSCIENCES COM 74587B101 53,319 26,346 97.68 789 35.33 0.0001
2021-11-15 2021-09-30 13F PULSE BIOSCIENCES COM 74587B101 26,973 -97,065 -78.25 583 -71.34 0.0001
2021-08-23 2021-06-30 13F/A-1 PULSE BIOSCIENCES COM 74587B101 124,038 102,566 477.67 2,034 299.61 0.0003
2021-08-16 2021-06-30 13F PULSE BIOSCIENCES COM 74587B101 124,038 102,566 2,034 0.0001
2021-05-17 2021-03-31 13F PULSE BIOSCIENCES COM 74587B101 21,472 -15,001 -41.13 509 -41.49 0.0001
2021-02-16 2020-12-31 13F PULSE BIOSCIENCES COM 74587B101 36,473 16,219 80.08 870 264.02 0.0001
2020-11-13 2020-09-30 13F PULSE BIOSCIENCES COM 74587B101 20,254 -4,507 -18.20 239 -7.72 0.0000
2020-08-14 2020-06-30 13F PULSE BIOSCIENCES COM 74587B101 24,761 3,385 15.84 259 69.28 0.0001
2020-05-26 2020-03-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 21,376 -14,212 -39.93 153 -67.92 0.0000
2020-05-15 2020-03-31 13F PULSE BIOSCIENCES COM 74587B101 21,376 -14,212 153 11.7536
2020-02-14 2019-12-31 13F PULSE BIOSCIENCES COM 74587B101 35,588 12,851 56.52 477 35.90 0.0001
2019-11-14 2019-09-30 13F PULSE BIOSCIENCES COM 74587B101 22,737 2,731 13.65 351 32.95 0.0001
2019-08-14 2019-06-30 13F PULSE BIOSCIENCES COM 74587B101 20,006 -3,410 -14.56 264 -35.92 0.0001
2019-05-15 2019-03-31 13F PULSE BIOSCIENCES COM 74587B101 23,416 -10,725 -31.41 412 5.37 0.0001
2019-02-14 2018-12-31 13F PULSE BIOSCIENCES COM 74587B101 34,141 -319 -0.93 391 -20.04 0.0001
2019-04-23 2018-09-30 13F/A-2 PULSE BIOSCIENCES COM 74587B101 34,460 -1,038 -2.92 489 -8.94 0.0001
2018-11-20 2018-09-30 13F/A-1 PULSE BIOSCIENCES COM 74587B101 34,460 0 489 0.0001
2018-11-14 2018-09-30 13F PULSE BIOSCIENCES COM 74587B101 34,460 -1,038 489
2019-04-23 2018-06-30 13F/A-1 PULSE BIOSCIENCES COM 74587B101 35,498 1,779 5.28 537 17.51 0.0001
2018-08-14 2018-06-30 13F PULSE BIOSCIENCES COM 74587B101 35,498 1,779 537
2019-04-23 2018-03-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 33,719 3,343 11.01 457 -36.26 0.0001
2018-05-14 2018-03-31 13F PULSE BIOSCIENCES COM 74587B101 33,719 3,343 457
2019-04-23 2017-12-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 30,376 13,252 77.39 717 125.47 0.0002
2018-02-14 2017-12-31 13F PULSE BIOSCIENCES COM 74587B101 30,376 13,252 717
2017-11-14 2017-09-30 13F PULSE BIOSCIENCES COM 74587B101 17,124 4,017 30.65 318 -29.65 0.0001
2017-08-11 2017-06-30 13F PULSE BIOSCIENCES COM 74587B101 13,107 6,367 94.47 452 227.54 0.0001
2017-05-22 2017-03-31 13F/A-1 PULSE BIOSCIENCES COM 74587B101 6,740 6,740 138 0.0000
2017-05-12 2017-03-31 13F PULSE BIOSCIENCES COM 74587B101 6,740 138 0.0000
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.