Monashee Investment Management LLC

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Monashee Investment Management LLC
CRD #163148
SEC #801-79936
CIK #0001627608
AUM 1,856.2 M (2026-02-27)
Employees 13 (62% Investors, 0% Brokers)
Phone617-671-0048
Address75 Park Plaza
Boston, MA 02116
Source [IAPD] [EDGAR] [Website]
Total AUM ($B)
3.02.41.81.20.60.02010201520212027
In the News
Thu, 23 Jul 2026 Monashee Investment Management LLC Cuts Stake in WhiteFiber, Inc. $WYFI — MarketBeat
Thu, 23 Jul 2026 Monashee Investment Management LLC Acquires 300,000 Shares of ADT Inc. $ADT — MarketBeat
Thu, 23 Jul 2026 Monashee Investment Management LLC Reduces Holdings in BridgeBio Pharma, Inc. $BBIO — MarketBeat
Thu, 23 Jul 2026 Monashee Investment Management LLC Takes Position in AST SpaceMobile, Inc. $ASTS — MarketBeat
Thu, 23 Jul 2026 Monashee Investment Management LLC Makes New $1.47 Million Investment in Hallador Energy Company $HNRG — MarketBeat
Sector Form 13F Holdings Value ($M)
Medline Inc 13.3
NRG Energy Inc 12.4
Forgent Power Solutions Inc 10.2
Solid Biosciences Inc 10.2
Nektar Therapeutics 7.2
Cytokinetics Inc 6.6
PPL Corp 5.2
Bridgebio Pharma Inc 5.0
ADT Inc 4.6
Evommune Inc 4.1
View All
Holdings by Sector ($M)
100080060040020002015201920232027
Type Form D Funds Date Sold AUM
HF Mission Pure Alpha Master LP [2025-02-26] 8.5 M 139.2 M
Filed 2025-12-17 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Monashee Pure Alpha Capital Master Fund LP [2018-01-30] 39.1 M
Filed 2019-02-12 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $5,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Monashee Capital Master Fund LP [2015-03-27] 42.5 M 2.8 M
Filed 2019-02-12 (D/A) · Exemption 506(b), 3(c), 3(c)(1) · Minimum $500,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Monashee Pure Alpha Capital Partners LP [2014-03-31] 39.1 M 27.2 M
Filed 2019-02-12 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $5,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Monashee Capital Partners LP [2012-04-04] 42.5 M 70.6 M
Filed 2019-02-12 (D/A) · Exemption 506(b), 3(c), 3(c)(1) · Minimum $500,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
AUM Breakdown Accounts AUM ($B)
By Client Type
(a) Individuals (other than high net worth individuals) 0 0.0
(b) Individuals (high net worth individuals) 0 0.0
(c) Banking or thrift institutions 0 0.0
(d) Investment companies 0 0.0
(e) Business development companies 0 0.0
(f) Pooled investment vehicles 5 0.7
(g) Pension and profit sharing plans 0 0.6
(h) Charitable organizations 0 0.4
(i) State or municipal government entities 0 0.0
(j) Other investment advisers 0 0.0
(k) Insurance companies 0 0.0
(l) Sovereign wealth funds and foreign official institutions 0 0.0
(m) Corporations or other businesses not listed above 0 0.1
(n) Other 0 0.0
Total 12 1.9
By Discretionary
Discretionary 12 1.9
Non-Discretionary 0 0.0
Total 12 1.9
By Non-United States Persons
Non-United States Persons 1.2
United States Persons 0.7
Total 12 1.9
Form D Directors Role # Filings # Firms 2011 - 2026
Thomas Wynn Executive Officer 7 2
Monashee Investment Management LLC Executive Officer 3 2
Monashee Capital GP LLC Executive Officer 3 2
Tom Wynn Executive Officer 3 2
Monashee Holdings LLC Executive Officer 2 2
Gerald Coughlan Executive Officer 2 1
EDGAR Form CIK 2011 - 2026
13F-HR [0001627608]
Firm Profile (Form ADV)
ServesInstitutional
Fund TypesHedge Fund
LEI549300DBGG1WL6Q1U134
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