SER (SER) Insider Trading
Over the last 3 months, SER insiders made 2 open-market buys and 2 sales, a net sale of -$78K (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 11 institutions increased and 8 reduced their position (13F).
Insider Activity
Sentiment
25/100
Buys (3m)
2
Sells (3m)
2
Net (3m)
-$78.3K
Insiders buyingCluster buying
Insider trades by month Buys Sells
Nov
Dec
Jan
Feb
Mar
May
ContextInstitutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 27, 2026 | LEDGER STEVEN Adirector, officer: Chief Executive Officer | Grant | 10,100 | $1.93 |
| May 26, 2026 | WILSON KAREN Jdirector | Buy | 10,000 | $1.77 |
| May 26, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Grant | 85,558 | $1.89 |
| May 26, 2026 | CURHAN GREGORY Sofficer: Chief Financial Officer | Grant | 123,019 | $1.89 |
| May 26, 2026 | LEDGER STEVEN Adirector, officer: Chief Executive Officer | Grant | 380,825 | $1.89 |
| May 26, 2026 | Tenjarla Sriniofficer: SVP, CMC & Formulation | Grant | 85,558 | $1.89 |
| May 22, 2026 | Marshall Richard Peterdirector | Buy | 12,183 | $1.65 |
| Apr 21, 2026 | Venkatesan Jaydirector | Grant | 7,553 | $1.94 |
| Apr 21, 2026 | Bailey Gregorydirector | Grant | 59,667 | $1.94 |
| Mar 24, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 6,500 | $0.06 |
| Mar 24, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 6,500 | $2.86 |
| Mar 20, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 39,000 | $0.06 |
| Mar 20, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 39,000 | $2.50 |
| Feb 17, 2026 | Tenjarla Sriniofficer: SVP, CMC & Formulation | Grant | 69,000 | $2.76 |
| Feb 17, 2026 | LEDGER STEVEN Adirector, officer: Chief Executive Officer | Grant | 230,100 | $2.76 |
| Feb 17, 2026 | GILL SIMBAdirector | Grant | 92,000 | $2.76 |
| Feb 17, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Grant | 69,000 | $2.76 |
| Feb 3, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 6,500 | $3.03 |
| Feb 3, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 6,500 | $0.06 |
| Jan 29, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 6,500 | $0.06 |
| Jan 29, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 6,500 | $3.57 |
| Jan 23, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 2,500 | $2.95 |
| Jan 23, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 2,500 | $0.06 |
| Jan 21, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 2,000 | $0.06 |
| Jan 21, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 2,000 | $3.00 |
| Jan 14, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 5,416 | $0.06 |
| Jan 14, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 5,416 | $2.50 |
| Jan 14, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 1,084 | $2.50 |
| Jan 14, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Option | 1,084 | $0.06 |
| Jan 9, 2026 | Moreadith Randallofficer: Chief Scientific Officer | Sell | 13,000 | $2.69 |
Source: SER SEC Form 4 filings, latest May 27, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their SER positions over the last 6 months (SEC Form 13F).
Increased
11
New positions
9
Reduced
8
Sold out
8
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| SIO CAPITAL MANAGEMENT, LLC | New Position | 1.0M | May 14, 2026 |
| VANGUARD GROUP INC | Unchanged | 180K | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 159K | May 15, 2026 |
| WAVERLY ADVISORS, LLC | Unchanged | 67K | Feb 17, 2026 |
| WAVERLY ADVISORS, LLC | Unchanged | 67K | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 65K | May 15, 2026 |
| BLACKROCK, INC. | Increased | 58K | May 13, 2026 |
| BROADWOOD CAPITAL INC | Reduced | 54K | Feb 17, 2026 |
| JANE STREET GROUP, LLC | New Position | 40K | May 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 30K | Feb 9, 2026 |
| VANGUARD FIDUCIARY TRUST CO | New Position | 20K | May 8, 2026 |
| LINSCOMB & WILLIAMS, INC. | Unchanged | 19K | Feb 10, 2026 |
| AVIDIAN WEALTH SOLUTIONS, LLC | New Position | 19K | May 7, 2026 |
| KEEL POINT, LLC | Unchanged | 18K | Dec 16, 2025 |
| KEEL POINT, LLC | Unchanged | 18K | Feb 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.