4

Changes in Ownership

Acumen Pharmaceuticals, Inc. Filed 2021-07-08 Acc 0001104659-21-090244

Director bought 1,875,000 shares at $16.00 ($30,000,000)

Director acquired 7,895,773 shares (conversion)

From the SEC's structured data for this filing

Trades in this filing

Insider	Date	Transaction	Shares	Price	Value	Owned after	D/I
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Conversion	+6,122,557			6,122,557	I
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Purchase	+1,759,332	$16.00	$28,149,312	7,881,889	I
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Conversion	+1,184,366			1,184,336	I
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Purchase	+115,668	$16.00	$1,850,688	1,300,034	I
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Conversion	+588,850			588,850	I
Derivatives
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Conversion · Series B Preferred Stock	−6,122,557			0	I
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Conversion · Series B Preferred Stock	−1,184,366			0	I
RA CAPITAL MANAGEMENT, L.P. Director	2021-07-06	Conversion · Series B Preferred Stock	−588,850			0	I
Open-market purchases · 1,875,000 sh · avg $16.00 · $30,000,000