SERA
SERA PROGNSTCS-A (SERA)
NASDAQ
$2.08+$0.03 (+1.22%)
Price as of Jun 03, 2026 4:10 PM EDT
  • $82.5M
    Market Cap
  • 6.81%
    1-Year Change
  • Medical Devices
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BAKER BROS. ADVISORS LP
14.40%
5.5M
0 (0.00%)
Mar 31, 2026
WHETSTONE CAPITAL ADVISORS, LLC
8.66%
3.3M
-152,824 (-4.62%)
Mar 31, 2026
ABRDN PLC
6.68%
2.6M
+271,076 (+10.63%)
Mar 31, 2026
INTERWEST VENTURE MANAGEMENT CO
6.33%
2.4M
0 (0.00%)
Sep 30, 2023
N/A
6.28%
2.4M
+2.4M (+100.00%)
Mar 31, 2026
VIVO CAPITAL, LLC
4.32%
1.7M
0 (0.00%)
Mar 31, 2026
BLACKROCK FUNDING, INC. /DE
4.10%
1.6M
+24,029 (+1.54%)
Dec 31, 2024

Current Ownership Distribution

  • Institutions250.1M (85.80%)
  • Mutual Funds34.7M (11.89%)
  • Insiders6.7M (2.30%)
  • Other0 (0.00%)

Insider Transactions

  • 2.30% (6.7M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 7
    Number of InsiderSelling (last 12 months)
  • $29.1M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Jackson Benjamin
General Counsel
Award
May 29, 2026
$9,200.00
5,000
$1.84
163,935
Jackson Benjamin
General Counsel
Award
Mar 12, 2026
$0.00
68,550
$0.00
68,550
Anderson Dyaarl Lee Jr.
Chief Commercial Officer
Award
Mar 12, 2026
$0.00
19,310
$0.00
19,310
Aerts Austin
Chief Financial Officer
Award
Mar 12, 2026
$0.00
68,550
$0.00
68,550
Inglis Tiffany Eul Davis
Chief Medical Officer
Award
Mar 12, 2026
$0.00
27,034
$0.00
27,034
Jackson Benjamin
General Counsel
Award
Mar 12, 2026
$0.00
44,215
$0.00
158,935
Anderson Dyaarl Lee Jr.
Chief Commercial Officer
Award
Mar 12, 2026
$0.00
12,455
$0.00
79,569
Aerts Austin
Chief Financial Officer
Award
Mar 12, 2026
$0.00
44,215
$0.00
308,667
Inglis Tiffany Eul Davis
Chief Medical Officer
Award
Mar 12, 2026
$0.00
17,437
$0.00
92,437
Aerts Austin
Chief Financial Officer
Sell
Mar 11, 2026
$2,078.76
1,019
$2.04
264,452
Jackson Benjamin
General Counsel
Sell
Mar 11, 2026
$2,095.08
1,027
$2.04
114,720
Lindgardt Zhenya
Chief Executive Officer
Sell
Mar 11, 2026
$6,064.92
2,973
$2.04
738,314
Aerts Austin
Chief Financial Officer
Sell
Mar 10, 2026
$11,531.10
6,069
$1.90
265,471
Lindgardt Zhenya
Chief Executive Officer
Sell
Mar 10, 2026
$43,014.10
22,639
$1.90
741,287
Kearney Paul
Chief Data Officer
Sell
Mar 09, 2026
$3,970.96
2,026
$1.96
165,357
Harrison Robert Gardner
Chief Information Officer
Sell
Mar 09, 2026
$6,585.60
3,360
$1.96
77,428
Boniface John J.
Chief Scientific Officer
Sell
Mar 09, 2026
$5,954.48
3,038
$1.96
147,359
Jackson Benjamin
General Counsel
Sell
Mar 09, 2026
$6,113.24
3,119
$1.96
115,747
Aerts Austin
Chief Financial Officer
Sell
Mar 09, 2026
$1,321.04
674
$1.96
271,540
Harrison Robert Gardner
Chief Information Officer
Sell
Feb 24, 2026
$4,680.00
2,000
$2.34
80,788
Kamdar Kim P.
Other
Feb 04, 2026
$0.00
30,920
$0.00
0
Kamdar Kim P.
Other
Feb 04, 2026
$0.00
3,231
$0.00
32,573
Harrison Robert Gardner
Chief Information Officer
Sell
Jan 27, 2026
$5,940.00
2,000
$2.97
82,788
Harrison Robert Gardner
Chief Information Officer
Sell
Dec 30, 2025
$6,000.00
2,000
$3.00
84,788
Kearney Paul
Chief Data Officer
Exempt
Nov 26, 2025
$0.00
1,986
$0.00
32,203
Kearney Paul
Chief Data Officer
Exempt
Nov 26, 2025
$3,217.32
1,986
$1.62
170,582
Kearney Paul
Chief Data Officer
Sell
Nov 26, 2025
$6,970.86
1,986
$3.51
168,596
Harrison Robert Gardner
Chief Information Officer
Sell
Nov 10, 2025
$17,103.36
6,528
$2.62
89,404
Boniface John J.
Chief Scientific Officer
Sell
Nov 10, 2025
$20,349.54
7,767
$2.62
151,726
Aerts Austin
Chief Financial Officer
Sell
Nov 10, 2025
$16,639.62
6,351
$2.62
278,319