M28 Capital Management LP Long-Term Concentrated

Location: STAMFORD, CT

CIK: 0001807489 · Show all filings

Period: Q1 2026 (← Previous)

Filing Date: May 14, 2026

Total Value ($000): $53,799 (100.0% shares, 0.0% debt)

Holdings (9)

Decreased Positions (7)

WVE WAVE LIFE SCIENCES LTD 61.8%

Value ($000) $33,265 (-65.5%) Shares 4,588,284 (-19.0%) Est. Cost $3.40 Unrealized +304.7%

ARWR ARROWHEAD PHARMACEUTICALS IN 4.3%

Value ($000) $2,311 (-48.4%) Shares 36,851 (-45.3%) Est. Cost $33.13 Unrealized +98.4%

TGTX TG THERAPEUTICS INC 5.5%

Value ($000) $2,935 (-39.1%) Shares 88,354 (-45.3%) Est. Cost $15.49 Unrealized +91.4%

PRQR PROQR THRAPEUTICS N V 1.8%

Value ($000) $972 (-52.8%) Shares 599,793 (-41.2%) Est. Cost $2.38 Unrealized -31.3%

RCKT ROCKET PHARMACEUTICALS INC 1.4%

Value ($000) $755 (-44.2%) Shares 210,871 (-45.3%) Est. Cost $23.75 Unrealized -84.8%

SLN SILENCE THERAPEUTICS PLC 1.0%

Value ($000) $533 (-52.6%) Shares 101,203 (-45.3%) Est. Cost $9.41 Unrealized —

CRIS CURIS INC 0.3%

Value ($000) $156 (-69.7%) Shares 284,889 (-45.3%) Est. Cost $11.24 Unrealized -91.3%

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
WVE	WAVE LIFE SCIENCES LTD	4,588,284 (-19.0%)	$33,265 (-65.5%)	61.8%	$3.40	+304.7%	SHS	Y95308105
ARWR	ARROWHEAD PHARMACEUTICALS IN	36,851 (-45.3%)	$2,311 (-48.4%)	4.3%	$33.13	+98.4%	COM	04280A100
TGTX	TG THERAPEUTICS INC	88,354 (-45.3%)	$2,935 (-39.1%)	5.5%	$15.49	+91.4%	COM	88322Q108
PRQR	PROQR THRAPEUTICS N V	599,793 (-41.2%)	$972 (-52.8%)	1.8%	$2.38	-31.3%	SHS EURO	N71542109
RCKT	ROCKET PHARMACEUTICALS INC	210,871 (-45.3%)	$755 (-44.2%)	1.4%	$23.75	-84.8%	COM	77313F106
SLN	SILENCE THERAPEUTICS PLC	101,203 (-45.3%)	$533 (-52.6%)	1.0%	$9.41	—	ADS	82686Q101
CRIS	CURIS INC	284,889 (-45.3%)	$156 (-69.7%)	0.3%	$11.24	-91.3%	COM	231269309

Unchanged Positions (2)

IVVD INVIVYD INC 22.3%

Value ($000) $12,023 Shares 9,248,250 Est. Cost $17.64 Unrealized -88.8%

GUTS FRACTYL HEALTH INC 1.6%

Value ($000) $850 Shares 1,856,117 Est. Cost $8.42 Unrealized -85.8%

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
IVVD	INVIVYD INC	9,248,250	$12,023	22.3%	$17.64	-88.8%	COM	00534A102
GUTS	FRACTYL HEALTH INC	1,856,117	$850	1.6%	$8.42	-85.8%	COM	35168W103