Alliancebernstein L.p. ownership in PBYI / Puma Biotechnology, Inc.

푸마 바이오테크놀로지, Inc.

US ˙ NasdaqGS ˙ US74587V1070

Security	PBYI / Puma Biotechnology, Inc.
Institution	Alliancebernstein L.p.
Latest Disclosed Ownership	13,800 shares
Latest Disclosed Value	$ 82,110

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 13,800 shares of Puma Biotechnology, Inc. (US:PBYI) valued at $88,182 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,800 shares of Puma Biotechnology, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $97,014 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-15	2026-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	13,800	0	0.00	82	0.00	0.0000
2026-02-17	2025-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	13,800	0	0.00	82	12.33	0.0000
2025-11-14	2025-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	13,800	0	0.00	73	55.32	0.0000
2025-08-14	2025-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	13,800	13,800		47		0.0000
2022-08-15	2022-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	0	-55,900	-100.00	0	-100.00
2022-05-13	2022-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	55,900	100	0.18	161	-5.29	0.0001
2022-02-14	2021-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	55,800	-5,900	-9.56	170	-60.74	0.0001
2021-11-10	2021-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	61,700	0	0.00	433	-23.50	0.0002
2021-07-30	2021-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	61,700	0	0.00	566	-5.67	0.0002
2021-05-06	2021-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	61,700	-3,300	-5.08	600	-10.04	0.0003
2021-02-08	2020-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	65,000	0	0.00	667	1.68	0.0003
2020-11-12	2020-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	65,000	-8,900	-12.04	656	-14.92	0.0004
2020-08-13	2020-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	73,900	-6,600	-8.20	771	13.55	0.0005
2020-05-14	2020-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	80,500	0	0.00	679	-3.55	0.0005
2020-02-18	2019-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	80,500	0	0.00	704	-18.80	0.0004
2019-11-14	2019-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	80,500	9,200	12.90	867	-4.30	0.0005
2019-08-14	2019-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	71,300	25,600	56.02	906	-48.90	0.0006
2019-05-14	2019-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	45,700	0	0.00	1,773	90.65	0.0012
2019-02-13	2018-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	45,700	-125,640	-73.33	930	-88.16	0.0007
2018-11-08	2018-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	171,340	128,300	298.09	7,856	208.56	0.0051
2018-08-13	2018-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	43,040	-24,860	-36.61	2,546	-44.90	0.0018
2018-05-14	2018-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	67,900	7,130	11.73	4,621	-23.07	0.0033
2018-02-13	2017-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	60,770	-5,020	-7.63	6,007	-23.75	0.0043
2017-11-13	2017-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	65,790	24,650	59.92	7,878	119.08	0.0059
2017-08-10	2017-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	41,140	2,000	5.11	3,596	146.98	0.0028
2017-05-11	2017-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	39,140	0	0.00	1,456	21.13	0.0012
2017-02-13	2016-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	39,140	0	0.00	1,202	-54.19	0.0010
2016-11-10	2016-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	39,140	-7,700	-16.44	2,624	88.10	0.0022
2016-08-11	2016-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	46,840	32,200	219.95	1,395	224.42	0.0012
2016-05-13	2016-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	14,640	-200	-1.35	430	-63.03	0.0004
2016-02-16	2015-12-31	13F/A-1	PUMA BIOTECHNOLOGY	COM	74587V107	14,840	-1,474	-9.04	1,163	-5.37	0.0010
2016-02-12	2015-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	14,840			1,118
2015-11-13	2015-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	16,314	-414,707	-96.22	1,229	-97.56	0.0011
2015-08-14	2015-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	431,021	-20,032	-4.44	50,322	-52.75	0.0416
2015-05-13	2015-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	451,053	-12,513	-2.70	106,498	21.38	0.0863
2015-02-13	2014-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	463,566	70,790	18.02	87,739	-6.37	0.0729
2014-11-13	2014-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	392,776	168,729	75.31	93,705	533.70	0.0789
2014-08-13	2014-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	224,047	-261,044	-53.81	14,787	-70.73	0.0125
2014-05-13	2014-03-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	485,091	124,766	34.63	50,517	35.42	0.0436
2014-02-13	2013-12-31	13F	PUMA BIOTECHNOLOGY	COM	74587V107	360,325	-35,817	-9.04	37,304	75.49	0.0333
2013-11-14	2013-09-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	396,142	-50,470	-11.30	21,257	7.27	0.0210
2013-08-13	2013-06-30	13F	PUMA BIOTECHNOLOGY	COM	74587V107	446,612	446,612		19,816		0.0210

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.