Ra Capital Management, L.P.
· New
Change
+5.7M
Date
Q1 2026
ZL
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Ra Capital Management, L.P.
· New
Change
+5.7M
Date
Q1 2026
|
Ra Capital Management, L.P. | New· Q1 2026 | – | +5.7M | – | Q1 2026 | |||||
|
Clearbridge Investments, LLC
· Exited
Change
−1.8M
Δ Own
−100.0%
Date
Q1 2026
|
Clearbridge Investments, LLC | Exited· Q1 2026 | – | −1.8M | −100.0% | Q1 2026 | |||||
|
UBS Group AG
· Reduced
Change
−1.3M
Date
Q1 2026
|
UBS Group AG | Reduced· Q1 2026 | – | −1.3M | – | Q1 2026 | |||||
|
Wellington Management Group LLP
· Exited
Change
−753K
Δ Own
−100.0%
Date
Q1 2026
|
Wellington Management Group LLP | Exited· Q1 2026 | – | −753K | −100.0% | Q1 2026 | |||||
|
Bank of America Corp
· Exited
Change
−389K
Δ Own
−100.0%
Date
Q1 2026
|
Bank of America Corp | Exited· Q1 2026 | – | −389K | −100.0% | Q1 2026 | |||||
|
Rtw Investments, LP
· Reduced
Change
−385K
Date
Q1 2026
|
Rtw Investments, LP | Reduced· Q1 2026 | – | −385K | – | Q1 2026 | |||||
|
Legal & General
· Reduced
Change
−318K
Date
Q1 2026
|
Legal & General | Reduced· Q1 2026 | – | −318K | – | Q1 2026 | |||||
|
T. Rowe Price Associates
· Reduced
Change
−311K
Date
Q1 2026
|
T. Rowe Price Associates | Reduced· Q1 2026 | – | −311K | – | Q1 2026 | |||||
|
JPMorgan Chase & Co
· Reduced
Change
−287K
Date
Q1 2026
|
JPMorgan Chase & Co | Reduced· Q1 2026 | – | −287K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+280K
Δ Own
+949.1%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +280K | +949.1% | Q1 2026 | |||||
|
Walleye Capital LLC
· Reduced
Change
−279K
Date
Q1 2026
|
Walleye Capital LLC | Reduced· Q1 2026 | – | −279K | – | Q1 2026 | |||||
|
Bamco Inc
· Added
Change
+240K
Date
Q1 2026
|
Bamco Inc | Added· Q1 2026 | – | +240K | – | Q1 2026 | |||||
|
Aberdeen Group PLC
· New
Change
+238K
Date
Q1 2026
|
Aberdeen Group PLC | New· Q1 2026 | – | +238K | – | Q1 2026 | |||||
|
Marshall Wace, LLP
· Exited
Change
−232K
Δ Own
−100.0%
Date
Q1 2026
|
Marshall Wace, LLP | Exited· Q1 2026 | – | −232K | −100.0% | Q1 2026 | |||||
|
BlackRock
· Added
Change
+230K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +230K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Du Ying
· Director
2 operations
0
|
Du Ying | Director | 2 operations | – | 0 | – | 33K | – | Jul 2, 2026 | Jul 6, 2026 | |||||||||
|
Du Ying
· Director
Tax withholding or exercise payment (F)
-$83K
|
Du Ying | Director | Tax withholding or exercise payment (F) | $19.12 | -4K | -$83K | 1.2M | −0.4% | Jul 2, 2026 | Jul 6, 2026 | |||||||||
|
Du Ying
· Director
Grant (A)
80K
|
Du Ying | Director | Grant (A) | – | 80K | – | 80K | – | Jul 2, 2026 | Jul 6, 2026 | |||||||||
|
Gaynor Richard
· Director
Buy
+$33K
|
Gaynor Richard | Director | Buy | $19.05 | +2K | +$33K | 81K | +2.2% | Jul 1, 2026 | Jul 6, 2026 | |||||||||
|
Du Ying
· Director
2 operations
0
|
Du Ying | Director | 2 operations | – | 0 | – | 36K | – | Jul 1, 2026 | Jul 6, 2026 | |||||||||
|
Du Ying
· Director
Tax withholding or exercise payment (F)
-$136K
|
Du Ying | Director | Tax withholding or exercise payment (F) | $19.15 | -7K | -$136K | 1.2M | −0.6% | Jul 1, 2026 | Jul 6, 2026 | |||||||||
|
Du Ying
· Director
Sell
−$130K
|
Du Ying | Director | Sell | $18.53 | −7K | −$130K | 1.2M | −0.6% | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Du Ying
· Director
2 operations
0
|
Du Ying | Director | 2 operations | – | 0 | – | 18K | – | Jun 29, 2026 | Jul 1, 2026 | |||||||||
|
Edmondson Frazor Titus III
· Officer
Sell
−$72K
|
Edmondson Frazor Titus III | Officer | Sell | $17.46 | −4K | −$72K | 30K | −11.9% | Jun 26, 2026 | Jun 29, 2026 | |||||||||
|
Du Ying
· Director
Sell
−$429K
|
Du Ying | Director | Sell | $17.46 | −25K | −$429K | 1.2M | −2.0% | Jun 26, 2026 | Jun 29, 2026 | |||||||||
|
Chen Yajing
· Officer
Sell
−$40K
|
Chen Yajing | Officer | Sell | $17.46 | −2K | −$40K | 36K | −6.0% | Jun 26, 2026 | Jun 29, 2026 | |||||||||
|
Edmondson Frazor Titus III
· Officer
2 operations
0
|
Edmondson Frazor Titus III | Officer | 2 operations | – | 0 | – | 0 | – | Jun 25, 2026 | Jun 29, 2026 | |||||||||
|
Du Ying
· Director
2 operations
0
|
Du Ying | Director | 2 operations | – | 0 | – | 0 | – | Jun 25, 2026 | Jun 29, 2026 | |||||||||
|
Chen Yajing
· Officer
2 operations
0
|
Chen Yajing | Officer | 2 operations | – | 0 | – | 0 | – | Jun 25, 2026 | Jun 29, 2026 | |||||||||
|
Lis William
· Director
Sell
−$127K
|
Lis William | Director | Sell | $18.09 | −7K | −$127K | 50K | −12.2% | Jun 22, 2026 | Jun 24, 2026 | |||||||||
N
A
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A
126 reporting institutions disclosed ZLAB position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.