Chen Yajing
Chief Financial Officer
Sale 10b5-1
- Shares
- 260
- Price
- $27.00
- Value
- $7,020
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•63 filings
ZLAB
Zai Lab Ltd
Net sales of $235.1K over the last 3 months
2 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
−$235,145
0 buyers · 2 sellers
12-month purchases
$65,804
1 distinct insiders
12-month sales
$9,167,266
5 distinct insiders
Highlighted alerts
1
28 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
100
Raw transactions
Everything returned by the filing
29
Voluntary view
P/S trades after deterministic checks
88
Administrative noise
Stored, never alerted
23
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- S
- Shares
- 7,026
- Price
- $18.53
- Footnotes
- 5
Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs. ADSs acquired upon vesting of Restricted Share Units ("RSUs"). Each RSU represents a contingent right to receive one ADS. These ADSs were sold automatically to cover taxes upon vesting of RSUs. The RSUs vest in equal annual installments over four years beginning on 06/29/2024, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting.
Raspberry interpretation
Informational — no alert
Reason: tax_withholding. The filing footnotes identify tax withholding.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Lis William
Director
Sale 10b5-1
- Shares
- 8,506
- Price
- $25.00
- Value
- $212,650
Chen Yajing
Chief Financial Officer
Sale 10b5-1
- Shares
- 619
- Price
- $25.00
- Value
- $15,475
GAYNOR RICHARD
Director
Purchase 10b5-1
- Shares
- 1,736
- Price
- $19.05
- Value
- $33,071
Lis William
Director
Sale 10b5-1
- Shares
- 7,040
- Price
- $18.09
- Value
- $127,354
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $19.00
- Value
- $949,765
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $20.74
- Value
- $1,037,110
Edmondson Frazor Titus III
Chief Legal Officer
Sale 10b5-1
- Shares
- 3,517
- Price
- $20.19
- Value
- $71,008
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $20.09
- Value
- $1,004,575
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 33,769
- Price
- $20.22
- Value
- $682,887
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 16,231
- Price
- $19.44
- Value
- $315,583
GAYNOR RICHARD
Director
Purchase 10b5-1
- Shares
- 1,731
- Price
- $18.91
- Value
- $32,733
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $19.03
- Value
- $951,465
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $19.42
- Value
- $970,935
Edmondson Frazor Titus III
Chief Legal Officer
Sale 10b5-1
- Shares
- 15,569
- Price
- $19.06
- Value
- $296,745
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $19.22
- Value
- $961,055
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 35,710
- Price
- $19.32
- Value
- $689,832
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 14,290
- Price
- $18.78
- Value
- $268,322
Amado Rafael
See Remarks
Sale 10b5-1
- Shares
- 10,000
- Price
- $17.38
- Value
- $173,800
Edmondson Frazor Titus III
Chief Legal Officer
Sale 10b5-1
- Shares
- 8,651
- Price
- $17.14
- Value
- $148,278
Edmondson Frazor Titus III
Chief Legal Officer
Sale 10b5-1
- Shares
- 14,328
- Price
- $19.78
- Value
- $283,408
Smiley Joshua L
See Remarks
PurchaseAlert
- Shares
- 10,000
- Price
- $28.91
- Value
- $289,100
Chen Yajing
Chief Financial Officer
Sale 10b5-1
- Shares
- 828
- Price
- $35.53
- Value
- $29,419
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 46,387
- Price
- $35.47
- Value
- $1,645,287
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $34.25
- Value
- $1,712,555
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $34.64
- Value
- $1,731,815
Amado Rafael
See Remarks
Sale 10b5-1
- Shares
- 3,000
- Price
- $35.00
- Value
- $105,000
Chen Yajing
Chief Financial Officer
Sale 10b5-1
- Shares
- 4,096
- Price
- $34.01
- Value
- $139,305
Du Ying
Chairperson & CEO
Sale 10b5-1
- Shares
- 50,000
- Price
- $34.74
- Value
- $1,737,155
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Aug 19, 2026 | Chen Yajing Chief Financial Officer | Sale | 260 | $27.00 | $7,020 | |
| Aug 12, 2026 | Lis William Director | Sale | 8,506 | $25.00 | $212,650 | |
| Aug 11, 2026 | Chen Yajing Chief Financial Officer | Sale | 619 | $25.00 | $15,475 | |
| Jul 01, 2026 | GAYNOR RICHARD Director | Purchase | 1,736 | $19.05 | $33,071 | |
| Jun 22, 2026 | Lis William Director | Sale | 7,040 | $18.09 | $127,354 | |
| May 18, 2026 | Du Ying Chairperson & CEO | Sale | 50,000 | $19.00 | $949,765 | |
| May 15, 2026 | Du Ying Chairperson & CEO | Sale | 50,000 | $20.74 | $1,037,110 | |
| May 14, 2026 | Edmondson Frazor Titus III Chief Legal Officer | Sale | 3,517 | $20.19 | $71,008 | |
| May 14, 2026 | Du Ying Chairperson & CEO | Sale | 50,000 | $20.09 | $1,004,575 | |
| May 13, 2026 | Du Ying Chairperson & CEO | Sale | 33,769 | $20.22 | $682,887 | |
| May 13, 2026 | Du Ying Chairperson & CEO | Sale | 16,231 | $19.44 | $315,583 | |
| Mar 17, 2026 | GAYNOR RICHARD Director | Purchase | 1,731 | $18.91 | $32,733 | |
| Mar 09, 2026 | Du Ying Chairperson & CEO | Sale | 50,000 | $19.03 | $951,465 | |
| Mar 06, 2026 | Du Ying Chairperson & CEO | Sale | 50,000 | $19.42 | $970,935 | |
| Mar 05, 2026 | Edmondson Frazor Titus III Chief Legal Officer | Sale | 15,569 | $19.06 | $296,745 | |
| Mar 05, 2026 | Du Ying Chairperson & CEO | Sale | 50,000 | $19.22 | $961,055 | |
| Mar 04, 2026 | Du Ying Chairperson & CEO | Sale | 35,710 | $19.32 | $689,832 | |
| Mar 04, 2026 | Du Ying Chairperson & CEO | Sale | 14,290 | $18.78 | $268,322 | |
| Mar 03, 2026 | Amado Rafael See Remarks | Sale | 10,000 | $17.38 | $173,800 | |
| Dec 16, 2025 | Edmondson Frazor Titus III Chief Legal Officer | Sale | 8,651 | $17.14 | $148,278 | |
| Nov 21, 2025 | Edmondson Frazor Titus III Chief Legal Officer | Sale | 14,328 | $19.78 | $283,408 | |
| Sep 10, 2025 | Smiley Joshua L See Remarks | Purchase | 10,000 | $28.91 | $289,100 | |
| Aug 15, 2025 | Chen Yajing Chief Financial Officer | Sale | 828 | $35.53 | $29,419 | |
| Aug 13, 2025 | Du Ying Chairperson & CEO | Sale | 46,387 | $35.47 | $1,645,287 | |
| Aug 12, 2025 | Du Ying Chairperson & CEO | Sale | 50,000 | $34.25 | $1,712,555 | |
| Aug 11, 2025 | Du Ying Chairperson & CEO | Sale | 50,000 | $34.64 | $1,731,815 | |
| Aug 08, 2025 | Amado Rafael See Remarks | Sale | 3,000 | $35.00 | $105,000 | |
| Aug 08, 2025 | Chen Yajing Chief Financial Officer | Sale | 4,096 | $34.01 | $139,305 | |
| Aug 08, 2025 | Du Ying Chairperson & CEO | Sale | 50,000 | $34.74 | $1,737,155 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.