ALEC · Insider trading · 13F holders · Congress trades
Alector, Inc. (ALEC)
Who is buying and selling ALEC: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 11
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $296K
- Congress trades, 12 months
- 0
ALEC at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 3 ALEC insiders filed 3 sales worth $296K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 11 13F filers hold ALEC among their 50 largest positions, worth $59.1M combined. The biggest bets by portfolio weight are Merck & Co., Inc. (1.4%), Spruce Street Capital LP (0.8%) and Ikarian Capital, LLC (0.7%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in ALEC.
- ALEC last closed at $2.24 on Oct 29, 2026.
ALEC insider trading
Between Aug 1, 2026 and Oct 29, 2026, 3 ALEC insiders filed 3 sales worth $296K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 4, 2026 | Rosenthal Arnon | Chief Executive Officer, Director | Sale | 72,606 | $2.66 | $193K | SEC |
| Sep 4, 2026 | Berkley Neil Lindsay | CFO & Chief Business Officer | Sale | 29,251 | $2.66 | $78K | SEC |
| Sep 4, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sale10b5-1 | 9,446 | $2.61 | $25K | SEC |
Who owns ALEC? Hedge funds and superinvestors
11 13F filers hold ALEC among their 50 largest positions, worth $59.1M combined. The biggest bets by portfolio weight are Merck & Co., Inc. (1.4%), Spruce Street Capital LP (0.8%) and Ikarian Capital, LLC (0.7%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| TCG Crossover Management, LLCHedge fund | 0.5% | $20.1M | 10,000,000 | +0.0% shares | Q2 2026 |
| Kynam Capital Management, LPHedge fund | 0.4% | $7.7M | 3,808,494 | +90.4% shares | Q2 2026 |
| Merck & Co., Inc.Corporation | 1.4% | $7.1M | 3,545,719 | +0.0% shares | Q2 2026 |
| 683 Capital Management, LLCHedge fund | 0.6% | $6.4M | 3,200,000 | +0.0% shares | Q2 2026 |
| Spruce Street Capital LPHedge fund | 0.8% | $4.2M | 2,101,068 | +0.0% shares | Q2 2026 |
| Ikarian Capital, LLCHedge fund | 0.7% | $4.0M | 1,982,606 | -4.8% shares | Q2 2026 |
| Medici Capital LLCHedge fund | 6.5% | $3.3M | 1,652,520 | +0.0% shares | Q2 2026 |
| Euclidean Capital LLCAsset manager | 0.6% | $2.6M | 1,307,858 | +0.0% shares | Q2 2026 |
| DAFNA Capital Management LLCHedge fund | 0.3% | $1.8M | 908,351 | +0.0% shares | Q2 2026 |
| Elmind Capital, LPHedge fund | 0.5% | $1.8M | 900,000 | +0.0% shares | Q2 2026 |
| Hamilton Lane Advisors LLCInvestment manager | 0.0% | $29K | 14,400 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 10). Screen ALEC in the grand portfolio →
ALEC stock trades by members of Congress
No member of Congress has disclosed a trade in ALEC.
ALEC questions and answers
Are insiders buying ALEC stock?
Between Aug 1, 2026 and Oct 29, 2026, 3 ALEC insiders filed 3 sales worth $296K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own ALEC?
11 13F filers hold ALEC among their 50 largest positions, worth $59.1M combined. The biggest bets by portfolio weight are Merck & Co., Inc. (1.4%), Spruce Street Capital LP (0.8%) and Ikarian Capital, LLC (0.7%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded ALEC?
No member of Congress has disclosed a trade in ALEC.
Who is the largest holder of ALEC?
Among 13F filers, TCG Crossover Management, LLC reports the largest ALEC position, $20.1M (10,000,000 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Merck & Co., Inc.'s: 1.4% of its portfolio.
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