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FULC

Fulcrum Therapeutics (FULC) stock: insider trades, news & valuation

Net selling
Close · Oct 9, 2026 $3.77 +0.5% on the day -60.8% over 12 months 52-week range $3.14 – $14.60

Share price and insider trades

FULC closeInsider buyInsider sale
051015NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $44,600 on 2025-12-15 · Curtis Gale OltmansBought $45,900 on 2026-07-13 · Tang Capital Management LlcSold $65,700 on 2026-06-26 · Alan EzekowitzSold $160,800 on 2026-02-02 · Robert J GouldSold $165,450 on 2025-11-19 · Robert J GouldBought $179,326 on 2026-07-17 · Kevin TangSold $341,100 on 2026-01-02 · Robert J GouldBought $382,262 on 2026-07-15 · Tang Capital Management LlcBought $415,349 on 2026-07-16 · Kevin TangBought $462,906 on 2026-07-14 · Tang Capital Management LlcSold $58,377,021 on 2025-12-08 · Ra Capital Healthcare Fund Lp
Bought, 12 months$1.5M
Sold, 12 months$59.2M
Insiders buying2
Insiders selling4

Fulcrum Therapeutics insider trading at a glance (Oct 9, 2026): in the past 12 months, 2 insiders bought $1.5M and 4 sold $59.2M of FULC stock on the open market.

FULC insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q4 2025: $58.6M sold (5 trades)Q4 2025Q1 2026: $502K sold (3 trades)Q1 2026Q2 2026: $66K sold (1 trades)Q2 2026Q3 2026: $1.5M bought (6 trades)$1.5MQ3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026$1.5M6—0
Q2 2026—0$66K1
Q1 2026—0$502K3
Q4 2025—0$58.6M5

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day0.9×Last 5 sessions
Insiders' paper profit+$88KOn all tracked purchases +6.0%

Summary

Over the past 12 months, 2 Fulcrum Therapeutics, Inc. insiders reported open-market purchases totaling $1.5M, while 4 insiders reported sales totaling $59.2M. Among insiders with enough purchase history to measure, Ra Capital Healthcare Fund Lp (10% Owner) has the highest Insider Score at 98. 6 of 9 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Jul 20SEC Kevin Tang10% Owner Buy 116,6717,030,000 held (+2%) $3.56 $415K +5.9% 50
Jul 20SEC Kevin Tang10% Owner Buy 50,9457,080,945 held (+1%) $3.52 $179K +7.1% 50
Jul 15SEC Tang Capital Management Llc10% Owner Buy 107,3776,913,329 held (+2%) $3.56 $382K +5.9% —
Jul 15SEC Tang Capital Management Llc10% Owner Buy 75,9526,805,952 held (+1%) $3.58 $272K +5.3% —
Jul 15SEC Tang Capital Management Llc10% Owner Buy 53,6516,730,000 held (+1%) $3.56 $191K +5.9% —
Jul 15SEC Tang Capital Management Llc10% Owner Buy 12,9666,676,349 held (+0%) $3.54 $46K +6.5% —
Jun 30SEC Alan EzekowitzDirector Sell Plan 18,00010,927 held (−62%) $3.65 $66K +3.3% —
Feb 4SEC Robert J GouldDirector Sell Plan 15,000469,864 held (−3%) $10.87 $163K -65.3% —
Feb 4SEC Robert J GouldDirector Sell Plan 15,000454,864 held (−3%) $10.72 $161K -64.8% —
Jan 6SEC Robert J GouldDirector Sell Plan 15,000469,864 held (−3%) $11.87 $178K -68.2% —
Dec 17SEC Curtis Gale OltmansGeneral Counsel Sell Plan 3,45210,252 held (−25%) $12.92 $45K -70.8% —
Dec 10SEC Ra Capital Healthcare Fund Lp10% Owner Sell 2,706,3976,145,682 held (−31%) $14.28 $38.6M -73.6% 98
Dec 10SEC Ra Capital Healthcare Fund Lp10% Owner Sell 1,377,0208,852,079 held (−13%) $13.33 $18.4M -71.7% 98
Dec 10SEC Ra Capital Healthcare Fund Lp10% Owner Sell 91,7226,053,960 held (−1%) $14.98 $1.4M -74.8% 98
Nov 21SEC Robert J GouldDirector Sell Plan 15,000484,864 held (−3%) $11.03 $165K -65.8% —

Insiders at Fulcrum Therapeutics, Inc.

InsiderBoughtSoldLast filingScore
Ra Capital Healthcare Fund Lp10% Owner — $58.4M Dec 10, 2025 98
Tang Capital Management Llc10% Owner $891K — Jul 15, 2026 —
Kevin Tang10% Owner $595K — Jul 20, 2026 50
Robert J GouldDirector — $667K Feb 4, 2026 —
Alan EzekowitzDirector — $66K Jun 30, 2026 —
Curtis Gale OltmansGeneral Counsel — $45K Dec 17, 2025 —

FULC stock: common questions

Are Fulcrum Therapeutics, Inc. insiders buying FULC stock?

In the past 12 months, 2 insiders reported open-market purchases of FULC worth $1.5M. The latest was 10% Owner Kevin Tang bought $415K of FULC at $3.56 — first open-market purchase in our records.

Are Fulcrum Therapeutics, Inc. insiders selling FULC stock?

4 insiders reported sales worth $59.2M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is FULC's 52-week range?

Over the past year FULC has traded between $3.14 and $14.60. It last closed at $3.77 on Oct 9, 2026.