Pieris Pharmaceuticals (PIRS) insider trading activity: Get Latest News Today

PIRS Stock Outstanding Shares

Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.

ShortableNo

OptionableNo

Short Percent Of Outstanding Shares1.7

Short Percent Of Float2.12

Shares Outstanding1.32M

Shares Float808.12K

Shares Short22.50K

Short Ratio3.52

2.12%

Short % of Float

1.7%

Short % of Shares Outstanding

Market Insider PIRS

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

0.07% Percentage of Shares held by All Insiders

52.92% Percentage of Shares held by All Institutions

52.96% Percentage of Float held by Institutions

Number of Institutions Holding Shares

Institutional Ownership

About 52.92% of PIRS shares are held by financial institutions. BVF INC/IL is the top corporate investor, holding 20.61M shares valued at $3.78M. A 20.83% stake in Pieris Pharmaceuticals, Inc. is owned by the company. LYNX1 CAPITAL MANAGEMENT LP owns 8.78M shares valued at $1.61M, which translates its holding of 8.87% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
2024-03-31	BVF INC/IL	20.83%	20.61M	3.78M	0	0
2024-03-31	LYNX1 CAPITAL MANAGEMENT LP	8.87%	8.78M	1.61M	-996.69K	-10.20%
2024-03-31	XTX TOPCO LTD	0.02%	20.76K	3.8K	-18.93K	-47.70%
2024-03-31	RENAISSANCE TECHNOLOGIES LLC	1.45%	1.43M	262K	364.58K	+34.23%
2024-03-31	BLACKROCK INC.	1.05%	1.04M	190.1K	-108	-0.01%
2024-03-31	ACADIAN ASSET MANAGEMENT LLC	0.97%	962.36K	175K	0	0
2024-03-31	VANGUARD GROUP INC	0.92%	907.39K	166.23K	0	0
2024-03-31	GEODE CAPITAL MANAGEMENT, LLC	0.78%	772.78K	141.62K	11.34K	+1.49%
2024-03-31	PRUDENTIAL FINANCIAL INC	0.22%	220.8K	40.45K	110.6K	+100.36%
2024-03-31	MILLENNIUM MANAGEMENT LLC	0.21%	211.75K	38.79K	45.06K	+27.03%
2024-03-31	SQUAREPOINT OPS LLC	0.15%	145.83K	26.72K	145.83K	+100.00%
2024-03-31	UBS GROUP AG	0.05%	51.99K	9.52K	45.71K	+727.93%
2024-03-31	GROUP ONE TRADING, L.P.	0.03%	25.7K	4.71K	18.97K	+281.87%
2024-03-31	GOLDMAN SACHS GROUP INC	0.02%	22.64K	331.87K	5	+0.02%
2024-03-31	KESTRA ADVISORY SERVICES, LLC	0.02%	17.5K	3.21K	0	0
2024-03-31	B. RILEY WEALTH ADVISORS, INC.	0.02%	17K	5.07K	17K	+100.00%
2024-03-31	HUDSON VALLEY INVESTMENT ADVISORS INC /ADV	0.01%	14K	2.57K	0	0
2024-03-31	CERITY PARTNERS LLC	0.01%	10.3K	1.89K	0	0
2024-03-31	US BANCORP \DE\	0.01%	10.28K	1.88K	0	0
2024-03-31	SUMMIT TRAIL ADVISORS, LLC	0.14%	140K	25.65K	140K	+100.00%
2024-03-31	CITIGROUP INC	0.09%	88.59K	16.23K	0	0
2024-03-31	TWO SIGMA SECURITIES, LLC	0.06%	58.27K	10.67K	42.85K	+277.98%
2024-03-31	CM MANAGEMENT, LLC	0.58%	575K	105.34K	-175K	-23.33%
2024-03-31	NORTHERN TRUST CORP	0.25%	243.59K	44.63K	0	0
2024-03-31	STATE STREET CORP	0.23%	222.82K	40.82K	0	0
2024-03-31	TOWER RESEARCH CAPITAL LLC (TRC)	0.04%	42.74K	7.82K	34.63K	+426.64%
2024-03-31	TWO SIGMA ADVISERS, LP	0.03%	33.9K	6.21K	-700	-2.02%
2024-03-31	RAYMOND JAMES & ASSOCIATES	0.03%	30K	5.5K	0	0
2024-03-31	NJ STATE EMPLOYEES DEFERRED COMPENSATION PLAN	0.03%	30K	5.5K	0	0
2024-03-31	COMMERCE BANK	0.02%	20K	3.66K	0	0
2024-03-31	MORGAN STANLEY	0.01%	6.86K	1.26K	0	0
2024-03-31	BANK OF AMERICA CORP /DE/	0.01%	6.15K	1.13K	6K	+4,137.93%
2024-03-31	WELLS FARGO & COMPANY/MN	0.01%	5.57K	1.02K	812	+17.06%
2024-03-31	BARCLAYS PLC	0.01%	5.01K	1K	0	0
2024-03-31	JPMORGAN CHASE & CO	0%	1.99K	365	18	+0.91%
2024-03-31	TRUVESTMENTS CAPITAL LLC	0%	1.12K	205	0	0
2024-03-31	ADVISOR GROUP HOLDINGS, INC.	0%	516	95	0	0
2024-03-31	ALLWORTH FINANCIAL LP	0%	350	65	0	0
2024-03-31	RHUMBLINE ADVISERS	0%	0	-	-1.87K	-100.00%
2024-03-31	TWO SIGMA INVESTMENTS, LP	0%	0	-	-40.91K	-100.00%
2024-03-31	BANK OF NEW YORK MELLON CORP	0%	0	-	-39.95K	-100.00%
2024-03-31	CITADEL ADVISORS LLC	0%	0	-	-64.8K	-100.00%
2024-03-31	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0%	0	-	-102.97K	-100.00%
2024-03-31	VIRTU FINANCIAL LLC	0%	0	-	-90.06K	-100.00%
2024-03-31	BAADER BANK AKTIENGESELLSCHAFT	0%	0	-	-20.3K	-100.00%
2024-03-31	1620 INVESTMENT ADVISORS, INC.	0%	0	-	-4.42K	-100.00%
2024-03-31	NORTHSTAR ASSET MANAGEMENT LLC /NJ/	0%	0	-	-39.07K	-100.00%
2023-12-31	TWO SIGMA SECURITIES, LLC	0.02%	15.42K	2.81K	-2.69K	-14.85%
2023-12-31	HUDSON VALLEY INVESTMENT ADVISORS INC /ADV	0.01%	14K	2.4K	0	0
2023-12-31	WEALTH EFFECTS LLC	0%	0	-	-11.7K	-100.00%
2023-12-31	CERITY PARTNERS LLC	0.01%	10.3K	1.88K	10.3K	+100.00%
2023-12-31	US BANCORP \DE\	0.01%	10.28K	1.87K	0	0
2023-12-31	TOWER RESEARCH CAPITAL LLC (TRC)	0.01%	8.12K	1.48K	-22.79K	-73.74%
2023-12-31	MORGAN STANLEY	0.01%	6.86K	1.25K	-1.34K	-16.35%
2023-12-31	GROUP ONE TRADING, L.P.	0.01%	6.73K	1.23M	0	0
2023-12-31	UBS GROUP AG	0.01%	6.28K	1.14K	-37.23K	-85.57%
2023-12-31	BARCLAYS PLC	0.01%	5.01K	1K	0	0
2023-12-31	WELLS FARGO & COMPANY/MN	0%	4.76K	867	-960	-16.78%
2023-12-31	1620 INVESTMENT ADVISORS, INC.	0%	4.42K	317.61K	4.42K	+100.00%
2023-12-31	JPMORGAN CHASE & CO	0%	1.97K	358	-110.31K	-98.24%
2023-12-31	RHUMBLINE ADVISERS	0%	1.87K	339	0	0
2023-12-31	TRUVESTMENTS CAPITAL LLC	0%	1.12K	204	0	0
2023-12-31	ADVISOR GROUP HOLDINGS, INC.	0%	516	94	0	0
2023-12-31	ALLWORTH FINANCIAL LP	0%	350	64	0	0
2023-12-31	BANK OF AMERICA CORP /DE/	0%	145	26	0	0
2023-12-31	ROYAL BANK OF CANADA	0%	0	-	-3.14K	-100.00%
2023-12-31	B. RILEY WEALTH ADVISORS, INC.	0%	0	-	-17K	-100.00%
2023-12-31	HRT FINANCIAL LP	0%	0	-	-18.36K	-100.00%
2023-12-31	CUTLER GROUP LLC / CA	0%	0	-	-4.5K	-100.00%
2023-12-31	AQUILO CAPITAL MANAGEMENT, LLC	0%	0	-	-3.3M	-100.00%
2023-12-31	BVF INC/IL	20.85%	20.61M	3.75M	0	0
2023-12-31	LYNX1 CAPITAL MANAGEMENT LP	9.89%	9.78M	1.78M	0	0
2023-12-31	CITADEL ADVISORS LLC	0%	4.3K	783	0	0
2023-12-31	RENAISSANCE TECHNOLOGIES LLC	1.08%	1.07M	194K	683.72K	+179.32%
2023-12-31	BLACKROCK INC.	1.05%	1.04M	188.87K	0	0
2023-12-31	ACADIAN ASSET MANAGEMENT LLC	0.97%	962.36K	174K	0	0
2023-12-31	VANGUARD GROUP INC	0.92%	907.39K	165.15K	-128.15K	-12.38%
2023-12-31	GEODE CAPITAL MANAGEMENT, LLC	0.77%	761.44K	138.63K	0	0
2023-12-31	CM MANAGEMENT, LLC	0.76%	750K	136.5K	100.6K	+15.49%
2023-12-31	NORTHERN TRUST CORP	0.25%	243.59K	44.33K	105.78K	+76.76%
2023-12-31	STATE STREET CORP	0.23%	222.82K	40.55K	0	0
2023-12-31	MILLENNIUM MANAGEMENT LLC	0.17%	166.69K	30.34K	-58.75K	-26.06%
2023-12-31	PRUDENTIAL FINANCIAL INC	0.11%	110.2K	20.06K	0	0
2023-12-31	VIRTU FINANCIAL LLC	0.09%	90.06K	16K	90.06K	+100.00%
2023-12-31	CITIGROUP INC	0.09%	88.59K	16.12K	0	0
2023-12-31	TWO SIGMA INVESTMENTS, LP	0.04%	40.91K	7.45K	-1.48K	-3.48%
2023-12-31	BANK OF NEW YORK MELLON CORP	0.04%	39.95K	7.27K	0	0
2023-12-31	XTX TOPCO LTD	0.04%	39.69K	7.22K	39.69K	+100.00%
2023-12-31		0.04%	39.07K	7.11K	39.07K	+100.00%
2023-12-31	TWO SIGMA ADVISERS, LP	0.04%	34.6K	6.3K	10.2K	+41.80%
2023-12-31	RAYMOND JAMES & ASSOCIATES	0.03%	30K	5.46K	0	0
2023-12-31	NJ STATE EMPLOYEES DEFERRED COMPENSATION PLAN	0.03%	30K	5.46K	0	0
2023-12-31	GOLDMAN SACHS GROUP INC	0.02%	22.63K	4.12K	27	+0.12%
2023-12-31	BAADER BANK AKTIENGESELLSCHAFT	0.02%	20.3K	2.74K	20.3K	+100.00%
2023-12-31	COMMERCE BANK	0.02%	20K	3.64K	0	0
2023-12-31	KESTRA ADVISORY SERVICES, LLC	0.02%	17.5K	3.19K	17.5K	+100.00%

PIRS Insiders

Among the PIRS insiders holding of 0.07% of the stake in company, AQUILO CAPITAL MANAGEMENT, LLC, 10 percent owner, holds the largest shares of 3.68M. BVF PARTNERS L P/IL, 10 percent owner, is the second largest PIRS insider with ownership of 314.14K shares. KHUONG CHAU QUANG, , stands third with possession of 65.4K shares of that stake.

Insiders	Designation	Shares Held
AQUILO CAPITAL MANAGEMENT, LLC	10 percent owner	3.68M
BVF PARTNERS L P/IL	10 percent owner	314.14K
KHUONG CHAU QUANG		65.4K
REINE ALLAN	See Remarks	65K
ORBIMED ADVISORS LLC	10 percent owner	38.87K
KIRITSY CHRISTOPHER P	director	20K
ADAR1 CAPITAL MANAGEMENT, LLC	10 percent owner	15.07K
MATIS LOUIS	SVP, Chief Development Officer	10K
YODER STEPHEN S.	President and CEO	6K
DEMUTH TIM	Chief Medical Officer	6K
DEPTULA-HICKS DARLENE M	SVP, Chief Financial Officer	5K
OLWILL SHANE	Chief Development Officer	4.64K
GERAGHTY JAMES A	director	1

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
2024-08-12	ADAR1 CAPITAL MANAGEMENT, LLC	PURCHASE	15.88	757	12.02K	15.07K
2024-08-09	ADAR1 CAPITAL MANAGEMENT, LLC	PURCHASE	14.89	3K	44.68K	127.33K
2024-08-07	GERAGHTY JAMES A	PURCHASE	1.00	1	1	1
2023-05-25	KIRITSY CHRISTOPHER P	PURCHASE	0.85	10K	8.5K	20K
2022-05-13	DEMUTH TIM	PURCHASE	1.71	6K	10.26K	6K
2021-08-30	OLWILL SHANE	SALE	5.15	29.2K	150.38K	4.64K
2020-07-21	AQUILO CAPITAL MANAGEMENT, LLC	SALE	2.95	1.9M	5.61M	3.68M
2019-09-06	BVF PARTNERS L P/IL	SALE	4.50	1.13K	5.08K	314.14K
2018-09-14	KIRITSY CHRISTOPHER P	PURCHASE	5.11	5K	25.53K	10K
2018-05-15	GERAGHTY JAMES A	PURCHASE	5.75	10K	57.5K	20K
2018-04-30	ORBIMED ADVISORS LLC	SALE	6.35	10.4K	66.04K	38.87K
2018-02-13	ORBIMED ADVISORS LLC	SALE	8.98	75	673.5	49.27K
2018-01-03	ORBIMED ADVISORS LLC	SALE	7.35	16.13K	118.54K	49.27K
2017-12-18	ORBIMED ADVISORS LLC	SALE	5.70	1.39K	7.93K	65.4K
2017-08-17	GERAGHTY JAMES A	PURCHASE	4.82	10K	48.2K	10K
2017-08-17	REINE ALLAN	PURCHASE	4.89	20K	97.8K	65K
2017-08-16	REINE ALLAN	PURCHASE	4.79	45K	215.55K	45K
2016-06-14	MATIS LOUIS	PURCHASE	1.71	7.92K	13.53K	10K
2016-06-13	YODER STEPHEN S.	PURCHASE	1.68	6K	10.08K	6K
2016-06-13	DEPTULA-HICKS DARLENE M	PURCHASE	1.66	5K	8.3K	5K
2016-06-13	MATIS LOUIS	PURCHASE	1.68	2.09K	3.5K	2.09K
2015-07-06	ORBIMED ADVISORS LLC	PURCHASE	2.75	4.72K	12.97K	65.4K
2015-07-06	KHUONG CHAU QUANG	PURCHASE	2.75	4.72K	12.97K	65.4K

Frequently Asked Questions

PIRS Stock Outstanding Shares

ShortableNo

OptionableNo

Short Percent Of Outstanding Shares1.7

Short Percent Of Float2.12

Shares Outstanding1.32M

Shares Float808.12K

Shares Short22.50K

Short Ratio3.52

2.12%

Short % of Float

1.7%

Short % of Shares Outstanding

Market Insider PIRS

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

0.07% Percentage of Shares held by All Insiders

52.92% Percentage of Shares held by All Institutions

52.96% Percentage of Float held by Institutions

Number of Institutions Holding Shares

Institutional Ownership

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
2024-03-31	BVF INC/IL	20.83%	20.61M	3.78M	0	0
2024-03-31	LYNX1 CAPITAL MANAGEMENT LP	8.87%	8.78M	1.61M	-996.69K	-10.20%
2024-03-31	XTX TOPCO LTD	0.02%	20.76K	3.8K	-18.93K	-47.70%
2024-03-31	RENAISSANCE TECHNOLOGIES LLC	1.45%	1.43M	262K	364.58K	+34.23%
2024-03-31	BLACKROCK INC.	1.05%	1.04M	190.1K	-108	-0.01%
2024-03-31	ACADIAN ASSET MANAGEMENT LLC	0.97%	962.36K	175K	0	0
2024-03-31	VANGUARD GROUP INC	0.92%	907.39K	166.23K	0	0
2024-03-31	GEODE CAPITAL MANAGEMENT, LLC	0.78%	772.78K	141.62K	11.34K	+1.49%
2024-03-31	PRUDENTIAL FINANCIAL INC	0.22%	220.8K	40.45K	110.6K	+100.36%
2024-03-31	MILLENNIUM MANAGEMENT LLC	0.21%	211.75K	38.79K	45.06K	+27.03%
2024-03-31	SQUAREPOINT OPS LLC	0.15%	145.83K	26.72K	145.83K	+100.00%
2024-03-31	UBS GROUP AG	0.05%	51.99K	9.52K	45.71K	+727.93%
2024-03-31	GROUP ONE TRADING, L.P.	0.03%	25.7K	4.71K	18.97K	+281.87%
2024-03-31	GOLDMAN SACHS GROUP INC	0.02%	22.64K	331.87K	5	+0.02%
2024-03-31	KESTRA ADVISORY SERVICES, LLC	0.02%	17.5K	3.21K	0	0
2024-03-31	B. RILEY WEALTH ADVISORS, INC.	0.02%	17K	5.07K	17K	+100.00%
2024-03-31	HUDSON VALLEY INVESTMENT ADVISORS INC /ADV	0.01%	14K	2.57K	0	0
2024-03-31	CERITY PARTNERS LLC	0.01%	10.3K	1.89K	0	0
2024-03-31	US BANCORP \DE\	0.01%	10.28K	1.88K	0	0
2024-03-31	SUMMIT TRAIL ADVISORS, LLC	0.14%	140K	25.65K	140K	+100.00%
2024-03-31	CITIGROUP INC	0.09%	88.59K	16.23K	0	0
2024-03-31	TWO SIGMA SECURITIES, LLC	0.06%	58.27K	10.67K	42.85K	+277.98%
2024-03-31	CM MANAGEMENT, LLC	0.58%	575K	105.34K	-175K	-23.33%
2024-03-31	NORTHERN TRUST CORP	0.25%	243.59K	44.63K	0	0
2024-03-31	STATE STREET CORP	0.23%	222.82K	40.82K	0	0
2024-03-31	TOWER RESEARCH CAPITAL LLC (TRC)	0.04%	42.74K	7.82K	34.63K	+426.64%
2024-03-31	TWO SIGMA ADVISERS, LP	0.03%	33.9K	6.21K	-700	-2.02%
2024-03-31	RAYMOND JAMES & ASSOCIATES	0.03%	30K	5.5K	0	0
2024-03-31	NJ STATE EMPLOYEES DEFERRED COMPENSATION PLAN	0.03%	30K	5.5K	0	0
2024-03-31	COMMERCE BANK	0.02%	20K	3.66K	0	0
2024-03-31	MORGAN STANLEY	0.01%	6.86K	1.26K	0	0
2024-03-31	BANK OF AMERICA CORP /DE/	0.01%	6.15K	1.13K	6K	+4,137.93%
2024-03-31	WELLS FARGO & COMPANY/MN	0.01%	5.57K	1.02K	812	+17.06%
2024-03-31	BARCLAYS PLC	0.01%	5.01K	1K	0	0
2024-03-31	JPMORGAN CHASE & CO	0%	1.99K	365	18	+0.91%
2024-03-31	TRUVESTMENTS CAPITAL LLC	0%	1.12K	205	0	0
2024-03-31	ADVISOR GROUP HOLDINGS, INC.	0%	516	95	0	0
2024-03-31	ALLWORTH FINANCIAL LP	0%	350	65	0	0
2024-03-31	RHUMBLINE ADVISERS	0%	0	-	-1.87K	-100.00%
2024-03-31	TWO SIGMA INVESTMENTS, LP	0%	0	-	-40.91K	-100.00%
2024-03-31	BANK OF NEW YORK MELLON CORP	0%	0	-	-39.95K	-100.00%
2024-03-31	CITADEL ADVISORS LLC	0%	0	-	-64.8K	-100.00%
2024-03-31	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0%	0	-	-102.97K	-100.00%
2024-03-31	VIRTU FINANCIAL LLC	0%	0	-	-90.06K	-100.00%
2024-03-31	BAADER BANK AKTIENGESELLSCHAFT	0%	0	-	-20.3K	-100.00%
2024-03-31	1620 INVESTMENT ADVISORS, INC.	0%	0	-	-4.42K	-100.00%
2024-03-31	NORTHSTAR ASSET MANAGEMENT LLC /NJ/	0%	0	-	-39.07K	-100.00%
2023-12-31	TWO SIGMA SECURITIES, LLC	0.02%	15.42K	2.81K	-2.69K	-14.85%
2023-12-31	HUDSON VALLEY INVESTMENT ADVISORS INC /ADV	0.01%	14K	2.4K	0	0
2023-12-31	WEALTH EFFECTS LLC	0%	0	-	-11.7K	-100.00%
2023-12-31	CERITY PARTNERS LLC	0.01%	10.3K	1.88K	10.3K	+100.00%
2023-12-31	US BANCORP \DE\	0.01%	10.28K	1.87K	0	0
2023-12-31	TOWER RESEARCH CAPITAL LLC (TRC)	0.01%	8.12K	1.48K	-22.79K	-73.74%
2023-12-31	MORGAN STANLEY	0.01%	6.86K	1.25K	-1.34K	-16.35%
2023-12-31	GROUP ONE TRADING, L.P.	0.01%	6.73K	1.23M	0	0
2023-12-31	UBS GROUP AG	0.01%	6.28K	1.14K	-37.23K	-85.57%
2023-12-31	BARCLAYS PLC	0.01%	5.01K	1K	0	0
2023-12-31	WELLS FARGO & COMPANY/MN	0%	4.76K	867	-960	-16.78%
2023-12-31	1620 INVESTMENT ADVISORS, INC.	0%	4.42K	317.61K	4.42K	+100.00%
2023-12-31	JPMORGAN CHASE & CO	0%	1.97K	358	-110.31K	-98.24%
2023-12-31	RHUMBLINE ADVISERS	0%	1.87K	339	0	0
2023-12-31	TRUVESTMENTS CAPITAL LLC	0%	1.12K	204	0	0
2023-12-31	ADVISOR GROUP HOLDINGS, INC.	0%	516	94	0	0
2023-12-31	ALLWORTH FINANCIAL LP	0%	350	64	0	0
2023-12-31	BANK OF AMERICA CORP /DE/	0%	145	26	0	0
2023-12-31	ROYAL BANK OF CANADA	0%	0	-	-3.14K	-100.00%
2023-12-31	B. RILEY WEALTH ADVISORS, INC.	0%	0	-	-17K	-100.00%
2023-12-31	HRT FINANCIAL LP	0%	0	-	-18.36K	-100.00%
2023-12-31	CUTLER GROUP LLC / CA	0%	0	-	-4.5K	-100.00%
2023-12-31	AQUILO CAPITAL MANAGEMENT, LLC	0%	0	-	-3.3M	-100.00%
2023-12-31	BVF INC/IL	20.85%	20.61M	3.75M	0	0
2023-12-31	LYNX1 CAPITAL MANAGEMENT LP	9.89%	9.78M	1.78M	0	0
2023-12-31	CITADEL ADVISORS LLC	0%	4.3K	783	0	0
2023-12-31	RENAISSANCE TECHNOLOGIES LLC	1.08%	1.07M	194K	683.72K	+179.32%
2023-12-31	BLACKROCK INC.	1.05%	1.04M	188.87K	0	0
2023-12-31	ACADIAN ASSET MANAGEMENT LLC	0.97%	962.36K	174K	0	0
2023-12-31	VANGUARD GROUP INC	0.92%	907.39K	165.15K	-128.15K	-12.38%
2023-12-31	GEODE CAPITAL MANAGEMENT, LLC	0.77%	761.44K	138.63K	0	0
2023-12-31	CM MANAGEMENT, LLC	0.76%	750K	136.5K	100.6K	+15.49%
2023-12-31	NORTHERN TRUST CORP	0.25%	243.59K	44.33K	105.78K	+76.76%
2023-12-31	STATE STREET CORP	0.23%	222.82K	40.55K	0	0
2023-12-31	MILLENNIUM MANAGEMENT LLC	0.17%	166.69K	30.34K	-58.75K	-26.06%
2023-12-31	PRUDENTIAL FINANCIAL INC	0.11%	110.2K	20.06K	0	0
2023-12-31	VIRTU FINANCIAL LLC	0.09%	90.06K	16K	90.06K	+100.00%
2023-12-31	CITIGROUP INC	0.09%	88.59K	16.12K	0	0
2023-12-31	TWO SIGMA INVESTMENTS, LP	0.04%	40.91K	7.45K	-1.48K	-3.48%
2023-12-31	BANK OF NEW YORK MELLON CORP	0.04%	39.95K	7.27K	0	0
2023-12-31	XTX TOPCO LTD	0.04%	39.69K	7.22K	39.69K	+100.00%
2023-12-31		0.04%	39.07K	7.11K	39.07K	+100.00%
2023-12-31	TWO SIGMA ADVISERS, LP	0.04%	34.6K	6.3K	10.2K	+41.80%
2023-12-31	RAYMOND JAMES & ASSOCIATES	0.03%	30K	5.46K	0	0
2023-12-31	NJ STATE EMPLOYEES DEFERRED COMPENSATION PLAN	0.03%	30K	5.46K	0	0
2023-12-31	GOLDMAN SACHS GROUP INC	0.02%	22.63K	4.12K	27	+0.12%
2023-12-31	BAADER BANK AKTIENGESELLSCHAFT	0.02%	20.3K	2.74K	20.3K	+100.00%
2023-12-31	COMMERCE BANK	0.02%	20K	3.64K	0	0
2023-12-31	KESTRA ADVISORY SERVICES, LLC	0.02%	17.5K	3.19K	17.5K	+100.00%

PIRS Insiders

Insiders	Designation	Shares Held
AQUILO CAPITAL MANAGEMENT, LLC	10 percent owner	3.68M
BVF PARTNERS L P/IL	10 percent owner	314.14K
KHUONG CHAU QUANG		65.4K
REINE ALLAN	See Remarks	65K
ORBIMED ADVISORS LLC	10 percent owner	38.87K
KIRITSY CHRISTOPHER P	director	20K
ADAR1 CAPITAL MANAGEMENT, LLC	10 percent owner	15.07K
MATIS LOUIS	SVP, Chief Development Officer	10K
YODER STEPHEN S.	President and CEO	6K
DEMUTH TIM	Chief Medical Officer	6K
DEPTULA-HICKS DARLENE M	SVP, Chief Financial Officer	5K
OLWILL SHANE	Chief Development Officer	4.64K
GERAGHTY JAMES A	director	1

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
2024-08-12	ADAR1 CAPITAL MANAGEMENT, LLC	PURCHASE	15.88	757	12.02K	15.07K
2024-08-09	ADAR1 CAPITAL MANAGEMENT, LLC	PURCHASE	14.89	3K	44.68K	127.33K
2024-08-07	GERAGHTY JAMES A	PURCHASE	1.00	1	1	1
2023-05-25	KIRITSY CHRISTOPHER P	PURCHASE	0.85	10K	8.5K	20K
2022-05-13	DEMUTH TIM	PURCHASE	1.71	6K	10.26K	6K
2021-08-30	OLWILL SHANE	SALE	5.15	29.2K	150.38K	4.64K
2020-07-21	AQUILO CAPITAL MANAGEMENT, LLC	SALE	2.95	1.9M	5.61M	3.68M
2019-09-06	BVF PARTNERS L P/IL	SALE	4.50	1.13K	5.08K	314.14K
2018-09-14	KIRITSY CHRISTOPHER P	PURCHASE	5.11	5K	25.53K	10K
2018-05-15	GERAGHTY JAMES A	PURCHASE	5.75	10K	57.5K	20K
2018-04-30	ORBIMED ADVISORS LLC	SALE	6.35	10.4K	66.04K	38.87K
2018-02-13	ORBIMED ADVISORS LLC	SALE	8.98	75	673.5	49.27K
2018-01-03	ORBIMED ADVISORS LLC	SALE	7.35	16.13K	118.54K	49.27K
2017-12-18	ORBIMED ADVISORS LLC	SALE	5.70	1.39K	7.93K	65.4K
2017-08-17	GERAGHTY JAMES A	PURCHASE	4.82	10K	48.2K	10K
2017-08-17	REINE ALLAN	PURCHASE	4.89	20K	97.8K	65K
2017-08-16	REINE ALLAN	PURCHASE	4.79	45K	215.55K	45K
2016-06-14	MATIS LOUIS	PURCHASE	1.71	7.92K	13.53K	10K
2016-06-13	YODER STEPHEN S.	PURCHASE	1.68	6K	10.08K	6K
2016-06-13	DEPTULA-HICKS DARLENE M	PURCHASE	1.66	5K	8.3K	5K
2016-06-13	MATIS LOUIS	PURCHASE	1.68	2.09K	3.5K	2.09K
2015-07-06	ORBIMED ADVISORS LLC	PURCHASE	2.75	4.72K	12.97K	65.4K
2015-07-06	KHUONG CHAU QUANG	PURCHASE	2.75	4.72K	12.97K	65.4K

PIRS Stock Ownership Breakdown

Pieris Pharmaceuticals, Inc.

PIRS Stock Outstanding Shares

Market Insider PIRS

Institutional Ownership

PIRS Insiders

Buying/Selling by Insiders

Frequently Asked Questions

PIRS Stock Outstanding Shares

Market Insider PIRS

Institutional Ownership

PIRS Insiders

Buying/Selling by Insiders

Frequently Asked Questions