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$BYSI

$1.74 +$0.04 (2.35%)

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Insider Transactions

Insider Transaction Summary

Xiangmin Cui

1,518,893 shares

Net: -629,398 B/S: -

Matthew Kirkby

23,902 shares

Net: +23,902 B/S: ∞

Patrick Fabbio

22,165 shares

Net: +22,165 B/S: ∞

Jiangwen Majeti

21,730 shares

Net: +21,730 B/S: ∞

Brendan Delaney

20,427 shares

Net: +20,427 B/S: ∞

Sihai Xu

18,689 shares

Net: +18,689 B/S: ∞

Yingjuan June Lu

17,840 shares

Net: +17,840 B/S: ∞

Lan Huang

11,514 shares

Net: +11,514 B/S: ∞

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Xiangmin Cui	1,518,893	-629,398	-
Matthew Kirkby	23,902	+23,902	∞
Patrick Fabbio	22,165	+22,165	∞
Jiangwen Majeti	21,730	+21,730	∞
Brendan Delaney	20,427	+20,427	∞
Sihai Xu	18,689	+18,689	∞
Yingjuan June Lu	17,840	+17,840	∞
Lan Huang	11,514	+11,514	∞

Individual Transactions

April 01, 2026

Patrick Fabbio

Grant/Award Acquisition

Change: +22,165

Price: $0.00

Shares: 22,165

Value: +$0

Sihai Xu

Grant/Award Acquisition

Change: +18,689

Price: $0.00

Shares: 18,689

Value: +$0

Lan Huang

Grant/Award Acquisition

Change: +11,514

Price: $0.00

Shares: 11,514

Value: +$0

Yingjuan June Lu

Grant/Award Acquisition

Change: +17,840

Price: $0.00

Shares: 17,840

Value: +$0

Jiangwen Majeti

Grant/Award Acquisition

Change: +21,730

Price: $0.00

Shares: 21,730

Value: +$0

Brendan Delaney

Grant/Award Acquisition

Change: +20,427

Price: $0.00

Shares: 20,427

Value: +$0

Matthew Kirkby

Grant/Award Acquisition

Change: +23,902

Price: $0.00

Shares: 23,902

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Patrick Fabbio	Apr 03	Grant/Award Acquisition (A) Compensation/Award	22,165	+22,165	$0.00	+$0
Sihai Xu	Apr 03	Grant/Award Acquisition (A) Compensation/Award	18,689	+18,689	$0.00	+$0
Lan Huang	Apr 03	Grant/Award Acquisition (A) Compensation/Award	11,514	+11,514	$0.00	+$0
Yingjuan June Lu	Apr 03	Grant/Award Acquisition (A) Compensation/Award	17,840	+17,840	$0.00	+$0
Jiangwen Majeti	Apr 03	Grant/Award Acquisition (A) Compensation/Award	21,730	+21,730	$0.00	+$0
Brendan Delaney	Apr 03	Grant/Award Acquisition (A) Compensation/Award	20,427	+20,427	$0.00	+$0
Matthew Kirkby	Apr 08	Grant/Award Acquisition (A) Compensation/Award	23,902	+23,902	$0.00	+$0

October 17, 2025

Xiangmin Cui

Open Market Sale

Change: -45,513

Price: $1.76

Shares: 1,518,893

Value: -$80,102

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 20	Open Market Sale (S) Market Sale	1,518,893	-45,513	$1.76	-$80,102

October 16, 2025

Xiangmin Cui

Open Market Sale

Change: -85,798

Price: $1.72

Shares: 1,564,406

Value: -$147,572

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 20	Open Market Sale (S) Market Sale	1,564,406	-85,798	$1.72	-$147,572

October 15, 2025

Xiangmin Cui

Open Market Sale

Change: -17,960

Price: $1.65

Shares: 1,650,204

Value: -$29,634

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 15	Open Market Sale (S) Market Sale	1,650,204	-17,960	$1.65	-$29,634

October 14, 2025

Xiangmin Cui

Open Market Sale

Change: -28,495

Price: $1.65

Shares: 1,668,164

Value: -$47,016

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 15	Open Market Sale (S) Market Sale	1,668,164	-28,495	$1.65	-$47,016

October 13, 2025

Xiangmin Cui

Open Market Sale

Change: -107,361

Price: $1.70

Shares: 1,696,659

Value: -$182,513

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 15	Open Market Sale (S) Market Sale	1,696,659	-107,361	$1.70	-$182,513

October 10, 2025

Xiangmin Cui

Open Market Sale

Change: -2,390

Price: $1.77

Shares: 1,804,020

Value: -$4,230

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 10	Open Market Sale (S) Market Sale	1,804,020	-2,390	$1.77	-$4,230

October 09, 2025

Xiangmin Cui

Open Market Sale

Change: -3,979

Price: $1.81

Shares: 1,806,410

Value: -$7,201

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 10	Open Market Sale (S) Market Sale	1,806,410	-3,979	$1.81	-$7,201

October 08, 2025

Xiangmin Cui

Open Market Sale

Change: -7,507

Price: $1.77

Shares: 1,810,389

Value: -$13,287

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 10	Open Market Sale (S) Market Sale	1,810,389	-7,507	$1.77	-$13,287

October 07, 2025

Xiangmin Cui

Open Market Sale

Change: -2,100

Price: $1.79

Shares: 1,817,896

Value: -$3,759

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 07	Open Market Sale (S) Market Sale	1,817,896	-2,100	$1.79	-$3,759

October 06, 2025

Xiangmin Cui

Open Market Sale

Change: -17,500

Price: $1.78

Shares: 1,819,996

Value: -$31,150

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 07	Open Market Sale (S) Market Sale	1,819,996	-17,500	$1.78	-$31,150

October 03, 2025

Xiangmin Cui

Open Market Sale

Change: -600

Price: $1.76

Shares: 1,837,496

Value: -$1,056

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 07	Open Market Sale (S) Market Sale	1,837,496	-600	$1.76	-$1,056

October 02, 2025

Xiangmin Cui

Open Market Sale

Change: -600

Price: $1.73

Shares: 1,838,096

Value: -$1,038

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 02	Open Market Sale (S) Market Sale	1,838,096	-600	$1.73	-$1,038

October 01, 2025

Xiangmin Cui

Open Market Sale

Change: -2,601

Price: $1.80

Shares: 1,838,696

Value: -$4,681

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Xiangmin Cui	Oct 02	Open Market Sale (S) Market Sale	1,838,696	-2,601	$1.80	-$4,681