Bourne Lent Asset Management Inc reports 1.65% decrease in ownership of PACB / Pacific Biosciences of California, Inc.

Pacific Biosciences of California, Inc.

MX ˙ BMV ˙ US69404D1081

Security	MX:PACB / Pacific Biosciences of California, Inc.
Institution	Bourne Lent Asset Management Inc
Latest Disclosed Ownership	951,055 shares
Latest Disclosed Value	$ 1,255,393

On April 17, 2026 - Bourne Lent Asset Management Inc filed a 13F-HR form disclosing ownership of 951,055 shares of Pacific Biosciences of California, Inc. (MX:PACB) valued at $1,255,393 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 967,055 shares of Pacific Biosciences of California, Inc.. This represents a change in shares of -1.65% during the quarter.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-04-17	2026-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	951,055	-16,000	-1.65	1,255	-30.59	0.4615
2026-01-14	2025-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	967,055	0	0.00	1,808	46.16	0.5998
2025-12-15	2025-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	967,055	-5,200	-0.53	1,238	2.66	0.4398
2025-07-08	2025-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	972,255	0	0.00	1,206	5.06	0.4666
2025-04-14	2025-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	972,255	28,500	3.02	1,147	-33.58	0.4922
2025-01-17	2024-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	943,755	-10,840	-1.14	1,727	6.47	0.6584
2024-10-15	2024-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	954,595	3,200	0.34	1,623	24.48	0.6158
2024-08-01	2024-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	951,395	296,980	45.38	1,303	-46.90	0.4997
2024-04-12	2024-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	654,415	62,200	10.50	2,454	-57.76	0.9897
2024-01-19	2023-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	592,215	17,865	3.11	5,810	21.15	2.3579
2023-10-19	2023-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	574,350	-5,650	-0.97	4,796	-37.84	2.1126
2023-07-18	2023-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	580,000	-11,450	-1.94	7,714	12.65	2.6895
2023-04-25	2023-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	591,450	0	0.00	6,849	41.55	2.5894
2023-01-24	2022-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	591,450	7,300	1.25	4,838	42.67	2.0736
2022-11-01	2022-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	584,150	25,285	4.52	3,391	37.29	1.4745
2022-07-27	2022-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	558,865	2,000	0.36	2,470	-51.25	0.9804
2022-04-26	2022-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	556,865	1,115	0.20	5,067	-55.44	1.5866
2022-01-20	2021-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	555,750	2,900	0.52	11,371	-19.50	3.0421
2021-10-20	2021-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	552,850	4,000	0.73	14,125	-26.41	4.0541
2021-07-28	2021-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	548,850	12,050	2.24	19,193	7.34	5.3900
2021-04-23	2021-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	536,800	1,850	0.35	17,881	28.85	5.7055
2021-01-27	2020-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	534,950	-21,000	-3.78	13,877	152.91	4.5710
2020-10-19	2020-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	555,950	-450	-0.08	5,487	185.78	2.1063
2020-07-20	2020-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	556,400	0	0.00	1,920	12.74	0.8290
2020-04-17	2020-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	556,400	114,750	25.98	1,703	-24.98	0.9138
2020-01-24	2019-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	441,650	0	0.00	2,270	-0.39	1.0692
2019-10-24	2019-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	441,650	106,000	31.58	2,279	12.21	1.0930
2019-07-29	2019-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	335,650	0	0.00	2,031	-16.32	0.9736
2019-04-22	2019-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	335,650	0	0.00	2,427	-2.29	1.2027
2019-01-25	2018-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	335,650	8,500	2.60	2,484	40.34	1.4703
2018-10-19	2018-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	327,150	0	0.00	1,770	52.45	0.8437
2018-07-25	2018-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	327,150	9,498	2.99	1,161	78.34	0.6120
2018-04-20	2018-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	317,652	26,200	8.99	651	-15.34	0.3536
2018-02-05	2017-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	291,452	89,002	43.96	769	-27.66	0.4149
2017-10-16	2017-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	202,450	4,000	2.02	1,063	50.57	0.5459
2017-07-20	2017-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	198,450	-4,500	-2.22	706	-32.70	0.3857
2017-04-27	2017-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	202,950	0	0.00	1,049	36.06	0.5731
2017-01-27	2016-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	202,950	22,400	12.41	771	-52.35	0.4602
2016-10-25	2016-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	180,550	4,200	2.38	1,618	30.38	1.1920
2016-07-26	2016-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	176,350	13,000	7.96	1,241	-10.59	0.9752
2016-05-02	2016-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	163,350	18,575	12.83	1,388	-26.99	1.1101
2016-01-26	2015-12-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	144,775	-10,000	-6.46	1,901	235.87	1.4384
2015-10-27	2015-09-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	154,775	2,200	1.44	566	-35.61	0.4647
2015-07-28	2015-06-30	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	152,575	5,000	3.39	879	1.97	0.6914
2015-05-14	2015-03-31	13F	PACIFIC BIOSCIENCES CALIF IN	COM	69404D108	147,575	147,575		862		0.6526

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.