Sands Capital Ventures Discovery Fund III, L.P. - Jun 30, 2021 Form 3 Insider Report for Acumen Pharmaceuticals, Inc. (ABOS)

Role: 10%+ Owner
Signature: /s/ Jonathan Goodman, General Counsel of Sands Capital Ventures Discovery Fund III-GP, LLC, the General Partner of Sands Capital Ventures Discovery Fund III, L.P.
Stock symbol: ABOS
Transactions as of: Jun 30, 2021
Transactions value $: $0
Form type: 3
Date filed: 6/30/2021, 08:10 PM
Next filing: Jul 8, 2021

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	ABOS	Series A-1 Preferred Stock							Jun 30, 2021	Common Stock	1.12M		Direct	F1, F2, F4
holding	ABOS	Series B Preferred Stock							Jun 30, 2021	Common Stock	1.84M		Direct	F1, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each share of Series A-1 Preferred Stock and each share of Series B Preferred Stock will automatically convert into one share of Common Stock of the Issuer upon the closing of the Issuer's initial public offering. The Series A-1 Preferred and the Series B Preferred Stock have no expiration date.
F2	Represents Series A-1 Preferred 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. Frank M. Sands holds ultimate voting and investment power over these securities and may be deemed to beneficially own the securities.
F3	Represents 921,173 shares of Series B Preferred Stock held by Sands Capital Global Venture Fund II, L.P. ("Sands Venture Fund") and 921,173 shares of Series B Preferred Stock held by Sands Capital Life Sciences Pulse Fund, LLC ("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. 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 disclaim beneficial ownership of such securities except to the extent of their relative pecuniary interest therein.
F4	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.