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Corporate insider · Form 4

Mazumdar Claire

Chief Executive Officer

Conviction score
0
Neutral
Buys
$320K
8 transactions
Sells
$708K
10 transactions · $708K discretionary

All tracked transactions

Curated subset of Mazumdar Claire's SEC Form 4 filings. Routine 10b5-1 schedule sales are flagged inline and weighted less in the conviction score.

DateTickerActionValue
Apr 20, 2026BCAXsell
$0
15,000 × $0
Apr 20, 2026BCAXsell
$354K
15,000 × $23.6097
Apr 20, 2026BCAXbuy
$57K
15,000 × $3.7898
Apr 20, 2026BCAXsell
$0
15,000 × $0
Apr 20, 2026BCAXsell
$354K
15,000 × $23.6097
Apr 20, 2026BCAXbuy
$57K
15,000 × $3.7898
Apr 16, 2026BCAXsell
$0
7,080 × $0
Apr 16, 2026BCAXsell
$0
7,454 × $0
Apr 16, 2026BCAXsell
$0
8,226 × $0
Apr 16, 2026BCAXbuy
$39K
7,080 × $5.4537
Apr 16, 2026BCAXbuy
$28K
7,454 × $3.7898
Apr 16, 2026BCAXbuy
$36K
8,226 × $4.4369
Apr 16, 2026BCAXsell
$0
7,080 × $0
Apr 16, 2026BCAXsell
$0
7,454 × $0
Apr 16, 2026BCAXsell
$0
8,226 × $0
Apr 16, 2026BCAXbuy
$39K
7,080 × $5.4537
Apr 16, 2026BCAXbuy
$28K
7,454 × $3.7898
Apr 16, 2026BCAXbuy
$36K
8,226 × $4.4369

Method

Conviction score = logistic(role_weight × (buy_value − 0.2 × discretionary_sell_value)) mapped to −100..+100. CEOs and founders carry role_weight 0.95-1.0; directors 0.5; former executives 0.3. Routine 10b5-1 schedule sales are weighted down sharply — insiders file pre-arranged selling plans that trigger independent of their view of the stock, so they carry minimal signal. Open-market discretionary buys are rare and carry the heaviest weight.

Role weight: 0.40 (Chief Executive Officer).

Data sourced from SEC Form 4 filings via EDGAR. Curated subset (not every filing) — we prioritize CEO/CFO/Chair/10%-owner transactions and material $ amounts over noise.

Tickers Mazumdar has traded

BCAX

SEC Form 4 filings disclose trades by corporate insiders within 2 business days. Conviction scoring is a synthesis — not investment advice.