SAB Biotherapeutics, Inc.

Sioux Falls, SD · Founded 2020 · Biotech · Public

Fully human polyclonal anti-thymocyte globulin (ATG) antibodies produced using transchromosomal bovines

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Updated · sabbiotherapeutics.com

Sector
Biotech
Headquarters
Sioux Falls, SD
Founded
2020
Latest Form D
$175M, Aug 2025
Total capital
$186M
Federal grants
$3.9M
4 awards · 2016–2020
Rank in peer group#247 of 514
Private capital raised
$183M
2 Form D · last Aug 2025
15 months since last filing
Federal contracts
None on recordNo federal contract awards found.
Granted patents
1
8 pending · first 2024
Rank in peer group#186 of 514

Capital timeline

20162018202020222024FEDERAL ↑EQUITY ↓Cumulative $186M$1.4M$670K$1.4M$418K1st Form D$7.5M2nd Form D$175M
20162018202020222024FEDERAL ↑EQUITY ↓Cumulative $186M$1.4M$670K$1.4M$418K1st Form D$7.5M

Latest events

  • Private capital raisedForm D · SEC · 2nd filing$175M
  • Private capital raisedForm D · SEC · 1st filing$7.5M
  • Federal grantHealth and Human S · Phase II · Advancing a Candidate Human Polyclonal Anti-Thymocyte Globulin Product Produced in Transchromosomal Bovine for Transplant Induction/Acute Rejection and T1D Therapy$418K
  • Federal grantHealth and Human S · Phase II · Advancing a Candidate Human Polyclonal Anti-Thymocyte Globulin Product Produced in Transchromosomal Bovine for Transplant Induction/Acute Rejection and T1D Therapy$1.4M
  • Federal grantHealth and Human S · Phase II · Production of therapeutic human polyclonal antibodies against influenza viruses$670K
  • Federal grantHealth and Human S · Phase II · Production of therapeutic human polyclonal antibodies against influenza viruses$1.4M

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Federal first

86months

from SAB Biotherapeutics, Inc.’s first federal award to its first private round.

First federal award · Aug 2016
Health and Human S · $1.4M
First Form D · Oct 2023
$7.5M · 1st Form D
Awards before first raise
4 awards

An association in public records, not a cause or a prediction.

Standing among 514 peers

Line = median

Biotech · Molecule

  • Federal grants#247 · top 48%
  • Granted patents#186 · top 36%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

From SEC Form D filings
  • Andrew MoinDirectorNamed in SEC Form D filings
  • Christine HamiltonDirectorNamed in SEC Form D filings
  • David Charles LinkDirectorNamed in SEC Form D filings
  • Eddie SullivanExecutive Officer, DirectorNamed in SEC Form D filings
  • Erick LuceraDirectorNamed in SEC Form D filings
  • Jay SkylerDirectorNamed in SEC Form D filings
Show all 12 people
  • Jeffrey G. SpragensDirectorNamed in SEC Form D filings
  • Katie ElliasDirectorNamed in SEC Form D filings
  • Russell J. BeyerExecutive OfficerNamed in SEC Form D filings
  • Samuel J. ReichExecutive Officer, DirectorNamed in SEC Form D filings
  • Scott J. GibersonDirectorNamed in SEC Form D filings
  • William PolvinoDirectorNamed in SEC Form D filings

What it has protected

USPTO · 1 granted of 9
Show all 9 patent records
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Coronavirus Protein And Uses ThereofNov 14, 2024 · Application 18637145Pending
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Coronavirus Protein And Uses ThereofMay 7, 2024 · US 11,975,066Granted
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Coronavirus Protein And Uses ThereofApplication 63180935Pending
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Coronavirus Protein And Uses ThereofApplication 63144784Pending
  • Ungulate-derived Polyclonal Immunoglobulin Specific For PD-L1 And Uses ThereofApplication 63113635Pending
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Egfr And Uses ThereofApplication 63113643Pending
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Coronavirus Protein And Uses ThereofApplication 63076121Pending
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Coronavirus Spike Protein And Uses ThereofApplication 63072683Pending
  • Ungulate-derived Polyclonal Immunoglobulin Specific For Influenza Virus And Uses ThereofApplication 63284577Pending
  • SAB CAPRA, LLCShares a founder: WU, HUA
  • ALZARROK BIO LLCSimilar federal contract value in Biotech · null in contracts
  • CRYSTAL BIOSCIENCE, INC.Similar federal contract value in Biotech · null in contracts
  • Novelmed Therapeutics IncSimilar federal contract value in Biotech · null in contracts
  • Atsena Therapeutics, Inc.Similar federal contract value in Biotech · null in contracts
  • RNA THERAPEUTICS INC.Similar federal contract value in Biotech · null in contracts

Regulatory activity · Biotech

Sector-level, not company-level

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through . SBIR and STTR awards through .