FULC insider buying and SEC filings, explained
Fulcrum Therapeutics, Inc. · CIK 1680581
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Pharmaceutical Preparations
- State of incorporation
- DE
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$1.5M
Insiders who bought
1
Sold (not marked 10b5-1)
$58.4M
Planned sales (10b5-1)
$600K
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Jul 16–17, 2026 | Purchase (code P) | Kevin Tang (10% owner) bought 167,616 shares indirectly between Jul 16 and Jul 17 at about $3.55 ($595K), reported as a purchase (code P). Indirect holdings up 2% to 7,080,945 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Jul 20, 2026 |
| Jul 13–15, 2026 | Purchase (code P) | Kevin Tang (10% owner) bought 249,946 shares indirectly between Jul 13 and Jul 15 at about $3.57 ($891K), reported as a purchase (code P). Indirect holdings up 4% to 6,913,329 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Jul 15, 2026 |
| Jun 26, 2026 | Planned (10b5-1) | Alan Ezekowitz (Director) sold 18,000 shares at about $3.65 ($66K), marked as a 10b5-1 plan trade. Holdings down 62% to 10,927 shares. | SEC filing Filed Jun 30, 2026 |
| Feb 2, 2026 | Planned (10b5-1) | Robert J Gould (Director) sold 15,000 shares at about $10.72 ($161K), marked as a 10b5-1 plan trade. Holdings down 3% to 454,864 shares. | SEC filing Filed Feb 4, 2026 |
| Jan 2, 2026 | Planned (10b5-1) Amended filing | Robert J Gould (Director) sold 15,000 shares at about $10.87 ($163K), marked as a 10b5-1 plan trade. Holdings down 3% to 469,864 shares. This amends a filing from Jan 6. | SEC filing Filed Feb 4, 2026 |
| Dec 15, 2025 | Planned (10b5-1) | Curtis Gale Oltmans (Chief Legal Officer) sold 3,452 shares at $12.92 ($45K), marked as a 10b5-1 plan trade. Holdings down 25% to 10,252 shares. | SEC filing Filed Dec 17, 2025 |
| Dec 8, 2025 | Sale | Peter Kolchinsky (10% owner) sold 4,175,139 shares indirectly at about $13.98 ($58.4M). Indirect holdings down 41% to 6,053,960 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 3 other reporting owners. | SEC filing Filed Dec 10, 2025 |
| Nov 19, 2025 | Planned (10b5-1) | Robert J Gould (Director) sold 15,000 shares at about $11.03 ($165K), marked as a 10b5-1 plan trade. Holdings down 3% to 484,864 shares. | SEC filing Filed Nov 21, 2025 |
13 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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