Fulcrum Therapeutics FULC Insider Ownership

NASDAQ FULC
$3.70 -0.02 (-0.54%)
At close: Oct 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

15.78Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
18.11%
▲+9.28% pp QoQ
Shares Held by Insiders
13.82Mn
filed for Sep 2026
▲+105.10% QoQ
Shares Outstanding
76.29Mn
76,285,157 shares
Direct Holdings
683.47K
Indirect: 13.13Mn
Net Shares Traded (QoQ)
+7.08Mn
net buying in Sep 2026
Insiders Holding Shares
8
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

In the last 12 months, insiders at Fulcrum Therapeutics made open-market purchases of $1.49 million (417.56K shares) and open-market sales of $59.15 million (4.26Mn shares).

Form 4 Holdings

Insiders Holding FULC

Insiders 8
Shares held 15.78Mn
Of outstanding 20.69%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Kevin Tang TenPercentOwner 0 7,080,945 7,080,945 44.9% 20 Jul, 2026
2 Capital Management, L.P. Ra TenPercentOwner 0 6,053,960 6,053,960 38.4% 10 Dec, 2025
3 Rock Ventures Iii, L.P. Third TenPercentOwner 1,962,202 0 1,962,202 12.4% 15 Dec, 2022
4 Robert J Gould Interim President Ceo 454,864 0 454,864 2.9% 04 Feb, 2026
5 Alex Sapir Director, Officer 193,360 0 193,360 1.2% 08 Jul, 2024
6 Greg Tourangeau Principal Accounting Officer 14,062 0 14,062 0.1% 09 May, 2025
7 Alan Ezekowitz Director 10,927 0 10,927 0.1% 30 Jun, 2026
8 Curtis Gale Oltmans Chief Legal Officer 10,252 0 10,252 0.1% 17 Dec, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

290 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
16 Jul, 2026 Kevin Tang TenPercentOwner Acquired P 116,671 $3.56 $415.35K 7,030,000 Indirect
17 Jul, 2026 Kevin Tang TenPercentOwner Acquired P 50,945 $3.52 $179.33K 7,080,945 Indirect
13 Jul, 2026 Kevin Tang TenPercentOwner Acquired P 12,966 $3.54 $45.90K 6,676,349 Indirect
14 Jul, 2026 Kevin Tang TenPercentOwner Acquired P 53,651 $3.56 $191.00K 6,730,000 Indirect
14 Jul, 2026 Kevin Tang TenPercentOwner Acquired P 75,952 $3.58 $271.91K 6,805,952 Indirect
15 Jul, 2026 Kevin Tang TenPercentOwner Acquired P 107,377 $3.56 $382.26K 6,913,329 Indirect
30 Jun, 2026 Katina Dorton Director Acquired A 32,000 $0.00 $0 32,000 Direct
30 Jun, 2026 Alan Ezekowitz Director Acquired A 32,000 $0.00 $0 32,000 Direct
30 Jun, 2026 James A Geraghty Director Acquired A 32,000 $0.00 $0 32,000 Direct
30 Jun, 2026 Colin Hill Director Acquired A 32,000 $0.00 $0 32,000 Direct
30 Jun, 2026 Kate Haviland Director Acquired A 32,000 $0.00 $0 32,000 Direct
30 Jun, 2026 Robert J Gould Director Acquired A 32,000 $0.00 $0 32,000 Direct
30 Jun, 2026 Rachel K. King Director Acquired A 32,000 $0.00 $0 32,000 Direct
30 Jun, 2026 Sonja Banks Director Acquired A 32,000 $0.00 $0 32,000 Direct
26 Jun, 2026 Alan Ezekowitz Director Disposed S 18,000 $3.65 $65.61K 10,927 Direct
23 Apr, 2026 Joshua Lehrer-Graiwer Director Acquired A 64,000 $0.00 $0 64,000 Direct
02 Feb, 2026 Robert J Gould Director Disposed S 15,000 $10.72 $160.86K 454,864 Direct
02 Feb, 2026 Greg Tourangeau Principal Accounting Officer Acquired A 57,000 $0.00 $0 57,000 Direct
02 Feb, 2026 Alan A Musso Chief Financial Officer Acquired A 170,000 $0.00 $0 170,000 Direct
02 Jan, 2026 Robert J Gould Director Disposed S 15,000 $10.87 $163.09K 469,864 Direct