WILLIAM BLAIR INVESTMENT MANAGEMENT LLC - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Time period
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Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-05-08
12:32 pm
Purchase
2026-03-3113GNATIONAL BK HLDGS CORP CLASS A
NBHC
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC2,558,216
5.700%
2,558,216increase
(New Position)
Filing
History
2026-05-07
5:32 pm
Sale
2026-03-3113GREVOLVE GROUP INC
RVLV
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC1,766,423
4.300%
-381,702decrease
(-17.77%)
Filing
History
2026-05-07
5:28 pm
Sale
2026-03-3113GTHE BALDWIN INSURANCE GROUP, I
BWIN
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC6,794,492
7.000%
-1,004,197decrease
(-12.88%)
Filing
History
2026-05-07
5:23 pm
Sale
2026-03-3113GACV AUCTIONS INC
ACVA
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC7,212,623
4.100%
-3,864,286decrease
(-34.89%)
Filing
History
2026-05-07
5:18 pm
Sale
2026-03-3113GDIEBOLD NIXDORF, INC
DBD
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC1,426,464
4.100%
-376,107decrease
(-20.87%)
Filing
History
2026-05-07
5:13 pm
Purchase
2026-03-3113GI3 VERTICALS INC CLASS A COM
IIIV
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC1,176,960
5.300%
1,176,960increase
(New Position)
Filing
History
2026-05-07
5:07 pm
Sale
2026-03-3113GTWIST BIOSCIENCE CORP COM
TWST
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC5,269,718
8.600%
-684,711decrease
(-11.50%)
Filing
History
2026-05-07
4:57 pm
Sale
2026-03-3113GFOX FACTORY HOLDING CORP COM
FOXF
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC0
0.000%
-2,476,501decrease
(Position Closed)
Filing
History
2026-02-09
3:37 pm
Purchase
2025-12-3113GDIEBOLD NIXDORF, INC
DBD
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC1,802,571
5.000%
1,802,571increase
(New Position)
Filing
History
2026-02-09
3:31 pm
Purchase
2025-12-3113GREVOLVE GROUP INC
RVLV
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC2,148,125
5.300%
1,162,595increase
(+117.97%)
Filing
History
2026-02-09
3:25 pm
Purchase
2025-12-3113GTWIST BIOSCIENCE CORP COM
TWST
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC5,954,429
9.700%
2,147,562increase
(+56.41%)
Filing
History
2026-02-09
3:18 pm
Sale
2025-12-3113GAMICUS THERAPEUTICS INC
FOLD
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC10,627,717
3.400%
-5,346,537decrease
(-33.47%)
Filing
History
2026-02-09
3:13 pm
Sale
2025-12-3113GTREACE MED CONCEPTS INC
TMCI
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC1,145,498
1.800%
-2,518,974decrease
(-68.74%)
Filing
History
2025-12-01
4:09 pm
Purchase
2025-11-3013GTHE BALDWIN INSURANCE GROUP, I
BWIN
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC7,798,689
10.900%
2,891,100increase
(+58.91%)
Filing
History
2025-11-12
6:24 pm
Sale
2025-09-3013GMERCURY SYSTEMS INC
MRCY
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC2,526,133
4.200%
-2,169,550decrease
(-46.20%)
Filing
History
2025-11-12
6:19 pm
Sale
2025-09-3013GONTERRIS INC
ONT
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC1,315,018
3.700%
-1,002,642decrease
(-43.26%)
Filing
History
2025-11-12
6:14 pm
Sale
2025-09-3013GGENEDX HLDGS CORP
WGS
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC1,235,681
4.300%
-395,721decrease
(-24.26%)
Filing
History
2025-11-12
6:08 pm
Purchase
2025-09-3013GAMICUS THERAPEUTICS INC
FOLD
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC15,974,254
5.200%
1,195,603increase
(+8.09%)
Filing
History
2025-11-12
6:02 pm
Purchase
2025-09-3013GPERELLA WEINBERG PARTNERS
PWP
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC3,678,361
5.700%
3,678,361increase
(New Position)
Filing
History
2025-11-12
5:54 pm
Purchase
2025-09-3013GTREACE MED CONCEPTS INC
TMCI
WILLIAM BLAIR INVESTMENT MANAGEMENT LLC3,664,472
5.800%
3,664,472increase
(New Position)
Filing
History
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