Acumen Pharmaceuticals, Inc. — Director's Dealing 2021

Jul 8, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Acumen Pharmaceuticals, Inc. (ABOS)
CIK: 0001576885
Period of Report: 2021-07-06

Reporting Person: Sands Capital Ventures Discovery Fund III, L.P. (10% Owner)
Reporting Person: Sands Capital Global Venture Fund II, L.P. (10% Owner)
Reporting Person: Sands Capital Life Sciences Pulse Fund, LLC (10% Owner)
Reporting Person: SANDS FRANK M. (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-07-06	Common Stock	C	1124729	—	Acquired	1124729	Direct
2021-07-06	Common Stock	C	1842346	—	Acquired	2967075	Direct
2021-07-06	Common Stock	P	450000	$14.88	Acquired	3417075	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-07-06	Series A-1 Preferred Stock	$	C	1124729	Disposed		Common Stock (1124729)	Direct
2021-07-06	Series B Preferred Stock	$	C	1842346	Disposed		Common Stock (1842346)	Direct

Footnotes

F1: Each share of Series A-1 Preferred Stock and each share of Series B Preferred Stock automatically converted into one share of Common Stock of the Issuer upon the closing of the Issuer's initial public offering.

F2: Represents 225,000 shares of Common Stock acquired by Sands Capital Global Venture Fund II, L.P. ("Sands Venture Fund") and 225,000 shares of Common Stock acquired by ands Capital Life Sciences Pulse Fund ("Sands Pulse Fund") in connection with the closing of the Issuer's initial public offering.

F3: Consists of 1,124,719 shares of Common Stock held by Sands Capital Ventures Discovery Fund III, L.P. ("Sands Discovery Fund "). Sands Capital Ventures Discovery Fund III-GP, LLC ("Sands Discovery GP") is the general partner of Sands Discovery Fund. Sands Discovery GP disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.

F4: Consists of 921,173 shares of Common Stock held by Sands Venture Fund and 921,173 shares of Common Stock held by Sands Pulse Fund. Sands Capital Global Venture Fund II-GP, L.P. ("Sands Venture GP L.P.") is the general partner of Sands Venture Fund and Sands Capital Global Venture Discovery Fund II-GP, LLC ("Sands Venture GP LLC") is the general partner of Sands Venture GP L.P. Sands Venture GP L.P. and Sands Venture GP LLC each disclaims beneficial ownership of such securities except to the extent of its respective pecuniary interest therein.

F5: Frank M. Sands holds ultimate voting and investment power over securities held by Sands Discovery Fund, Sands Venture Fund and Sands Pulse Fund. Mr. Sands disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.