Mazumdar Claire

Insider

Director

Trades at: RLAY· BCAX

30D 90D 1Y

Net shares · 365d

-180.0K

0 buy · 180.0K sell

Net value · 365d

-$3.5M

$0 in · $3.5M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 180.0K sell

Trading track record · all companies

Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.

Transactions · 365d

Open-market Buys Sells All types

RLAY Grant·A
Jun 9, 26

Director

$0

32.9K sh

Own New
BCAX Exercise·M
May 18, 26

Chief Executive Officer · 10b5-1

$0

15.0K sh

Own +11%
BCAX Sell·S
May 18, 26

Chief Executive Officer · 10b5-1

$300.6K

15.0K sh · $20.04 avg · 2 lots

Own -4%
BCAX Exercise·M
May 18, 26

Chief Executive Officer · 10b5-1

$56.8K

15.0K sh · $3.79

Own +4%
BCAX Exercise·M
Apr 20, 26

Chief Executive Officer · 10b5-1

$0

37.8K sh · 4 lots

Own +31%
BCAX Sell·S
Apr 20, 26

Chief Executive Officer · 10b5-1

$354.1K

15.0K sh · $23.61

Own -4%
BCAX Exercise·M
Apr 20, 26

Chief Executive Officer · 10b5-1

$160.2K

37.8K sh · $4.24 avg · 4 lots

Own +11%
BCAX Exercise·M
Mar 20, 26

Chief Executive Officer · 10b5-1

$0

15.0K sh · 3 lots

Own +9%
BCAX Exercise·M
Mar 20, 26

Chief Executive Officer · 10b5-1

$56.9K

15.0K sh · $3.79 avg · 3 lots

Own +5%
BCAX Sell·S
Mar 20, 26

Chief Executive Officer · 10b5-1

$282.4K

15.0K sh · $18.82 avg · 3 lots

Own -4%
BCAX Exercise·M
Mar 9, 26

Chief Executive Officer · 10b5-1

$0

36.8K sh

Own +24%
BCAX Exercise·M
Mar 9, 26

Chief Executive Officer · 10b5-1

$139.3K

36.8K sh · $3.79

Own +11%
BCAX Sell·S
Mar 9, 26

Chief Executive Officer · 10b5-1

$704.8K

36.8K sh · $19.17

Own -10%
BCAX Exercise·M
Mar 6, 26

Chief Executive Officer · 10b5-1

$0

8.2K sh · 3 lots

Own +4%
BCAX Exercise·M
Mar 6, 26

Chief Executive Officer · 10b5-1

$31.2K

8.2K sh · $3.79 avg · 3 lots

Own +2%
BCAX Sell·S
Mar 6, 26

Chief Executive Officer · 10b5-1

$154.3K

8.2K sh · $18.74 avg · 3 lots

Own -2%
BCAX Grant·A
Feb 2, 26

Chief Executive Officer

$0

450.0K sh

Own New
BCAX Exercise·M
Dec 16, 25

Chief Executive Officer

$0

29.5K sh

Own +6%
BCAX Exercise·M
Dec 16, 25

Chief Executive Officer

$160.8K

29.5K sh · $5.45

Own +10%
BCAX Exercise·M
Nov 24, 25

Chief Executive Officer · 10b5-1

$0

41.2K sh

Own +21%
BCAX Exercise·M
Nov 24, 25

Chief Executive Officer · 10b5-1

$156.0K

41.2K sh · $3.79

Own +13%
BCAX Sell·S
Nov 24, 25

Chief Executive Officer · 10b5-1

$776.3K

41.2K sh · $18.86

Own -12%
BCAX Exercise·M
Oct 16, 25

Chief Executive Officer · 10b5-1

$0

24.1K sh

Own +10%
BCAX Exercise·M
Oct 16, 25

Chief Executive Officer · 10b5-1

$91.4K

24.1K sh · $3.79

Own +8%
BCAX Sell·S
Oct 16, 25

Chief Executive Officer · 10b5-1

$453.9K

24.1K sh · $18.83

Own -7%
BCAX Exercise·M
Oct 15, 25

Chief Executive Officer · 10b5-1

$0

24.7K sh · 2 lots

Own +9%
BCAX Sell·S
Oct 15, 25

Chief Executive Officer · 10b5-1

$466.9K

24.7K sh · $18.88 avg · 2 lots

Own -7%
BCAX Exercise·M
Oct 15, 25

Chief Executive Officer · 10b5-1

$93.7K

24.7K sh · $3.79 avg · 2 lots

Own +8%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Jun 9, 2026	RLAY	Director	Grant A	32.9K	New	—	$0
May 18, 2026	BCAX	Chief Executive Officer	Exercise M	15.0K	+11%	—	$0
May 18, 2026	BCAX	Chief Executive Officer	Sell S	15.0K2 lots	-4%	$20.04 avg	$300.6K
May 18, 2026	BCAX	Chief Executive Officer	Exercise M	15.0K	+4%	$3.79	$56.8K
Apr 20, 2026	BCAX	Chief Executive Officer	Exercise M	37.8K4 lots	+31%	—	$0
Apr 20, 2026	BCAX	Chief Executive Officer	Sell S	15.0K	-4%	$23.61	$354.1K
Apr 20, 2026	BCAX	Chief Executive Officer	Exercise M	37.8K4 lots	+11%	$4.24 avg	$160.2K
Mar 20, 2026	BCAX	Chief Executive Officer	Exercise M	15.0K3 lots	+9%	—	$0
Mar 20, 2026	BCAX	Chief Executive Officer	Exercise M	15.0K3 lots	+5%	$3.79 avg	$56.9K
Mar 20, 2026	BCAX	Chief Executive Officer	Sell S	15.0K3 lots	-4%	$18.82 avg	$282.4K
Mar 9, 2026	BCAX	Chief Executive Officer	Exercise M	36.8K	+24%	—	$0
Mar 9, 2026	BCAX	Chief Executive Officer	Exercise M	36.8K	+11%	$3.79	$139.3K
Mar 9, 2026	BCAX	Chief Executive Officer	Sell S	36.8K	-10%	$19.17	$704.8K
Mar 6, 2026	BCAX	Chief Executive Officer	Exercise M	8.2K3 lots	+4%	—	$0
Mar 6, 2026	BCAX	Chief Executive Officer	Exercise M	8.2K3 lots	+2%	$3.79 avg	$31.2K
Mar 6, 2026	BCAX	Chief Executive Officer	Sell S	8.2K3 lots	-2%	$18.74 avg	$154.3K
Feb 2, 2026	BCAX	Chief Executive Officer	Grant A	450.0K	New	—	$0
Dec 16, 2025	BCAX	Chief Executive Officer	Exercise M	29.5K	+6%	—	$0
Dec 16, 2025	BCAX	Chief Executive Officer	Exercise M	29.5K	+10%	$5.45	$160.8K
Nov 24, 2025	BCAX	Chief Executive Officer	Exercise M	41.2K	+21%	—	$0
Nov 24, 2025	BCAX	Chief Executive Officer	Exercise M	41.2K	+13%	$3.79	$156.0K
Nov 24, 2025	BCAX	Chief Executive Officer	Sell S	41.2K	-12%	$18.86	$776.3K
Oct 16, 2025	BCAX	Chief Executive Officer	Exercise M	24.1K	+10%	—	$0
Oct 16, 2025	BCAX	Chief Executive Officer	Exercise M	24.1K	+8%	$3.79	$91.4K
Oct 16, 2025	BCAX	Chief Executive Officer	Sell S	24.1K	-7%	$18.83	$453.9K
Oct 15, 2025	BCAX	Chief Executive Officer	Exercise M	24.7K2 lots	+9%	—	$0
Oct 15, 2025	BCAX	Chief Executive Officer	Sell S	24.7K2 lots	-7%	$18.88 avg	$466.9K
Oct 15, 2025	BCAX	Chief Executive Officer	Exercise M	24.7K2 lots	+8%	$3.79 avg	$93.7K

Buy Sell Non-market (grant · exercise · gift)

About Mazumdar Claire

This profile aggregates every SEC Form 4 insider transaction reported by Mazumdar Claire across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.