Pieris Pharmaceuticals, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Note 11 - Stock and Employee Benefit Plans (Details Textual)

v3.24.1

Note 11 - Stock and Employee Benefit Plans (Details Textual) - USD ($) $ / shares in Units, $ in Millions					12 Months Ended
	Jun. 20, 2023	Jun. 22, 2022	Jun. 25, 2021	Apr. 01, 2020	Dec. 31, 2023	Dec. 31, 2022	Jun. 23, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)					3,727,942	3,075,282
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value (in dollars per share)					$ 0.85	$ 1.96
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)					9,284,808
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)					154,656	181,466
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 4.3
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					2 years 2 months 26 days
Share-Based Payment Arrangement, Option [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)					750,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent					85.00%
Employee Director And Consultant Equity Incentive Plan2020 [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	14,750,000		5,750,000				3,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	6,000,000	3,000,000	2,250,000	3,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)						10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)					3,727,942

- Definition

Aggregate number of common shares reserved for future issuance.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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