The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ACADIA PHARMACEUTICALS INC COM 004225108 4,106 109,000 SH Call SOLE   109,000 0 0
ACCELERON PHARMA INC COM 00434H108 13,062 350,000 SH   SOLE   350,000 0 0
AERIE PHARMACEUTICALS INC COM 00771V108 3,645 75,000 SH   SOLE   75,000 0 0
AIMMUNE THERAPEUTICS INC COM 00900T107 4,958 200,000 SH   SOLE   200,000 0 0
AIMMUNE THERAPEUTICS INC COM 00900T107 3,719 150,000 SH Call SOLE   150,000 0 0
ALEXION PHARMACEUTICALS INC COM 015351109 14,029 100,000 SH   SOLE   100,000 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 4,112 35,000 SH   SOLE   35,000 0 0
AMICUS THERAPEUTICS INC COM 03152W109 3,016 200,000 SH   SOLE   200,000 0 0
AQUINOX PHARMACEUTICALS INC COM 03842B101 5,676 400,000 SH   SOLE   400,000 0 0
ARGENX SE SPONSORED ADR 04016X101 5,710 252,534 SH   SOLE   252,534 0 0
ASCENDIS PHARMA A S SPONSORED ADR 04351P101 7,250 200,000 SH   SOLE   200,000 0 0
AVEXIS INC COM 05366U100 10,112 104,539 SH   SOLE   104,539 0 0
AVEXIS INC COM 05366U100 19,346 200,000 SH Put SOLE   200,000 0 0
AXOVANT SCIENCES LTD COM G0750W104 688 100,000 SH   SOLE   100,000 0 0
BIOCRYST PHARMACEUTICALS COM 09058V103 2,620 500,000 SH   SOLE   500,000 0 0
BOSTON SCIENTIFIC CORP COM 101137107 8,022 275,000 SH   SOLE   275,000 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 4,781 75,000 SH   SOLE   75,000 0 0
BRISTOL MYERS SQUIBB CO COM 110122108 9,561 150,000 SH Call SOLE   150,000 0 0
CURRENCYSHS BRIT POUND STER BRIT POUND STE 23129S106 3,923 30,100 SH   SOLE   30,100 0 0
DBV TECHNOLOGIES S A SPONSORED ADR 23306J101 17,862 420,886 SH   SOLE   420,886 0 0
DBV TECHNOLOGIES S A SPONSORED ADR 23306J101 17,125 403,500 SH Put SOLE   403,500 0 0
DECIPHERA PHARMACEUTICALS IN COM 24344T101 1,223 64,410 SH   SOLE   64,410 0 0
ENTELLUS MED INC COM 29363K105 10,365 561,510 SH   SOLE   561,510 0 0
EXELIXIS INC COM 30161Q104 1,296 53,500 SH   SOLE   53,500 0 0
GENMARK DIAGNOSTICS INC COM 372309104 9,149 950,000 SH   SOLE   950,000 0 0
GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 7,763 250,000 SH   SOLE   250,000 0 0
GW PHARMACEUTICALS PLC ADS 36197T103 5,075 50,000 SH   SOLE   50,000 0 0
IGNYTA INC COM 451731103 6,793 550,000 SH   SOLE   550,000 0 0
IMMUNOMEDICS INC COM 452907108 27,218 1,946,946 SH   SOLE   1,946,946 0 0
INCYTE CORP COM 45337C102 4,086 35,000 SH   SOLE   35,000 0 0
INSMED INC COM PAR $.01 457669307 10,125 324,400 SH   SOLE   324,400 0 0
INSMED INC COM PAR $.01 457669307 9,363 300,000 SH Call SOLE   300,000 0 0
INTERCEPT PHARMACEUTICALS IN COM 45845P108 2,031 35,000 SH   SOLE   35,000 0 0
INTERCEPT PHARMACEUTICALS IN COM 45845P108 5,804 100,000 SH Call SOLE   100,000 0 0
IRHYTHM TECHNOLOGIES INC COM 450056106 7,004 135,000 SH   SOLE   135,000 0 0
IRIDEX CORP COM 462684101 1,869 199,519 SH   SOLE   199,519 0 0
JUNO THERAPEUTICS INC COM 48205A109 4,486 100,000 SH   SOLE   100,000 0 0
KADMON HLDGS INC COM 48283N106 2,848 850,000 SH   SOLE   850,000 0 0
MERCK & CO INC COM 58933Y105 4,162 65,000 SH   SOLE   65,000 0 0
NABRIVA THERAPEUTICS PLC SHS G63637105 983 120,000 SH   SOLE   120,000 0 0
NANOSTRING TECHNOLOGIES INC COM 63009R109 5,580 345,284 SH   SOLE   345,284 0 0
NEOS THERAPEUTICS INC COM 64052L106 3,660 400,000 SH   SOLE   400,000 0 0
NEUROCRINE BIOSCIENCES INC COM 64125C109 13,788 225,000 SH   SOLE   225,000 0 0
NEVRO CORP COM 64157F103 10,451 115,000 SH   SOLE   115,000 0 0
NUVASIVE INC COM 670704105 1,664 30,000 SH   SOLE   30,000 0 0
PATTERSON COMPANIES INC COM 703395103 6,184 160,000 SH   SOLE   160,000 0 0
PTC THERAPEUTICS INC COM 69366J200 2,001 100,000 SH   SOLE   100,000 0 0
PTC THERAPEUTICS INC COM 69366J200 2,001 100,000 SH Call SOLE   100,000 0 0
PUMA BIOTECHNOLOGY INC COM 74587V107 7,784 65,000 SH   SOLE   65,000 0 0
QUOTIENT LTD SHS G73268107 924 187,450 SH   SOLE   187,450 0 0
RA PHARMACEUTICALS INC COM 74933V108 3,431 235,000 SH   SOLE   235,000 0 0
RIGEL PHARMACEUTICALS INC COM NEW 766559603 2,794 1,100,000 SH   SOLE   1,100,000 0 0
SAGE THERAPEUTICS INC COM 78667J108 9,345 150,000 SH Put SOLE   150,000 0 0
SAREPTA THERAPEUTICS INC COM 803607100 4,536 100,000 SH   SOLE   100,000 0 0
SPARK THERAPEUTICS INC COM 84652J103 7,133 80,000 SH   SOLE   80,000 0 0
SPDR SERIES TRUST S&P BIOTECH 78464A870 30,300 350,000 SH Put SOLE   350,000 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 9,460 50,000 SH   SOLE   50,000 0 0
VERSARTIS INC COM 92529L102 674 275,000 SH   SOLE   275,000 0 0
VERTEX PHARMACEUTICALS INC COM 92532F100 7,602 50,000 SH   SOLE   50,000 0 0
VIEWRAY INC COM 92672L107 4,032 700,000 SH   SOLE   700,000 0 0
ZIMMER BIOMET HLDGS INC COM 98956P102 8,782 75,000 SH   SOLE   75,000 0 0
ZOGENIX INC COM NEW 98978L204 21,030 600,000 SH   SOLE   600,000 0 0
ZOGENIX INC COM NEW 98978L204 22,783 650,000 SH Put SOLE   650,000 0 0