Fulcrum Therapeutics, Inc. (FULC)
Nasdaq: FULC · Pharmaceutical Preparations · Cambridge, MA · filing with the SEC since 2016
Who owns Fulcrum Therapeutics, Inc.
As filed with the SECHolders of 5% or more
7
Tang Capital Management, LLC holds 10.4% of Common stock, par value $0.001 per share, as its SCHEDULE 13G/A filed Jul 15, 2026 says.
Directors and officers
13
report now, of 26 people on the record since 2019. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 7 named at left.
Holders of 5% or moreshare of the class, as filed
Tang Capital Management, LLC
SCHEDULE 13G/A · filed Jul 15, 2026 · Common stock, par value $0.001 per share · 8.2% in Jun 10, 2026
EcoR1 Capital, LLC
SCHEDULE 13G · filed Jun 25, 2026 · Common Stock · 9% in Jun 25, 2026
Nantahala Capital Management, LLC
SCHEDULE 13G · filed Aug 14, 2026 · Common stock, par value $0.001 per share · 4.58% in May 15, 2026
BlackRock Portfolio Management LLC
SCHEDULE 13G/A · filed Oct 27, 2026 · Common Stock · 6% in Jul 17, 2026
Blackrock, Inc.
SCHEDULE 13G/A · filed Jul 28, 2026 · Common Stock · 6% in Oct 17, 2025
Bank of America Corporation
SCHEDULE 13G · filed Aug 3, 2026 · Common Stock
Montanova Capital, LLC
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, par value $0.001 per share · 9.4% in May 2, 2025
Adage Capital Management, L.P.
SCHEDULE 13G/A · filed Nov 13, 2025 · Common Stock, par value $0.001 per share · reported falling below 5%, from 8.5% in Aug 12, 2025
RA Capital Management, L.P.
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, $0.001 par value per share · reported falling below 5%, from 9.9% in Feb 17, 2026
TCG Crossover GP II, LLC
SCHEDULE 13G/A · filed Aug 14, 2026 · Common Stock, par value $0.001 per share · reported falling below 5%, from 7.9% in May 15, 2026
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%
What FULC reports owning in othersstakes of 5% or more, and other ties
1 subsidiary in 1 country, from the list filed with the 10-K filed Feb 27, 2024.
Insider tradesForm 4
6sales
0purchases
0sales on a scheduled plan
3people selling
$800,000sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window6 of 46 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Ra Capital Healthcare Fund LP | 10% owner | 3 | $58.4M | 0 | 0 | $0 |
| Gould Robert J | Interim President & CEO | 4 | $700,000 | 0 | 0 | $0 |
| Ezekowitz Alan | director | 1 | $100,000 | 0 | 0 | $0 |
| Tang Capital Management LLC | 10% owner | 0 | $0 | 0 | 4 | $900,000 |
| Tang Kevin | 10% owner | 0 | $0 | 0 | 2 | $600,000 |
| Oltmans Curtis Gale | Chief Legal Officer | 1 | $0 | 0 | 0 | $0 |