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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1461993	Cempra Inc.	CEMP	Pharmaceutical Preparations (2834)	262644445

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1630330	W. David Oldach	6320 Quadrangle Drive Suite 360 Chapel Hill NC 27517	Chief Medical Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2015-11-09	10,000	$2.28	13,300	No	4	M	Direct
Common Stock	Disposition	2015-11-09	10,000	$28.78	3,300	No	4	S	Direct
Common Stock	Disposition	2015-11-09	2,200	$28.78	1,100	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (Right to Buy)	Acquisiton	2015-11-09	10,000	$0.00	10,000	$2.28

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
26,347		2021-02-28	No	4	M	Direct

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Employee Stock Option (Right to Buy)	$23.51	2024-12-31	23,000	23,000	Direct
Common Stock	Employee Stock Option (Right to Buy)	$13.10	2024-01-07	7,500	7,500	Direct
Common Stock	Employee Stock Option (Right to Buy)	$6.64	2023-03-06	10,000	10,000	Direct
Common Stock	Employee Stock Option (Right to Buy)	$6.63	2023-01-17	14,087	14,087	Direct
Common Stock	Employee Stock Option (Right to Buy)	$7.47	2022-03-20	20,000	20,000	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2024-12-31	23,000	23,000	Direct
2024-01-07	7,500	7,500	Direct
2023-03-06	10,000	10,000	Direct
2023-01-17	14,087	14,087	Direct
2022-03-20	20,000	20,000	Direct

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.70 to $28.84, inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.7801 to $28.82, inclusive.
The option vests according to the following schedule: 1/48th of the shares vest at the end of each month over 48 months, beginning after 01/01/2015.
The option vests according to the following schedule: 1/48th of the shares vest at the end of each month over 48 months, beginning after 01/01/2014.
The option vested according to the following schedule: 1/4th of the shares vest at the end of each quarter, beginning after 01/01/2013.
The option vested according to the following schedule: 1/4th of the shares vest at the end of each quarter, beginning after 01/01/2013.
The option vested on the one-year anniversary of the 03/21/2012 grant date.
The option vests according to the following schedule: 1/4th of the shares vest on the one-year anniversary of the 03/01/2011 grant date; 1/36th of the remaining shares vest at the end of each month over the next 36 months.