Ownership as of March 31, 2020. Twenty largest shareholders.
| Name | Series A shares | Series B shares | Share capital % | Voting rights % |
| ANNWALL & ROTHSCHILD INVESTMENTS AB | 377 736 | 410 478 | 7.02 | 28.63 |
| FJÄRDE AP FONDEN | 0 | 1 112 919 | 9.91 | 7.61 |
| ÖHMAN BANK S.A. | 0 | 1 106 452 | 9.86 | 7.57 |
| SWEDBANK ROBUR NY TEKNIK BTI | 0 | 579 172 | 5.16 | 3.96 |
| TREDJE AP-FONDEN | 0 | 507 064 | 4.52 | 3.47 |
| AMF AKTIEFOND SMÅBOLAG | 0 | 501 585 | 4.47 | 3.43 |
| UNIONEN | 0 | 447 196 | 3.98 | 3.06 |
| HANDELSBANKEN SVENSKA, SMABOLAGSFOND | 0 | 385 500 | 3.21 | 2.46 |
| CBNY-NORGES BANK | 0 | 313 000 | 2.79 | 2.14 |
| DANGOOR, DAVID | 0 | 283 501 | 2.52 | 1.94 |
| ANDRA AP-FONDEN | 0 | 263 500 | 2.35 | 1.8 |
| SWEDBANK ROBUR MICROCAP | 0 | 250 000 | 2.23 | 1.71 |
| ÅLANDSBANKEN I ÄGARES STÄLLE | 0 | 239 357 | 2.13 | 1.64 |
| BANQUE PICTET & CIE SA, W8IMY | 0 | 235 380 | 2.1 | 1.61 |
| SEB AB, LUXEMBOURG BRANCH, W8IMY | 0 | 231 016 | 2.06 | 1.58 |
| RBC INVESTOR SERVICES BANK S.A | 0 | 222 708 | 1.98 | 1.52 |
| FÖRSÄKRINGSAKTIEBOLAGET, AVANZA PENSION | 0 | 201 258 | 1.79 | 1.38 |
| HANDELSBANKEN MICROCAP SVERIGE | 0 | 170 220 | 1.52 | 1.16 |
| NORDNET PENSIONSFÖRSÄKRING AB | 0 | 160 889 | 1.43 | 1.1 |
| Sub-total | 377 736 | 7 621 195 | 71.03 | 77.77 |
| Other shareholders | 0 | 3 227 253 | 28.97 | 22.23 |
| Total | 377 736 | 10 848 448 | 100 | 100 |
Source: Euroclear Sweden AB
The total registered share capital of Infant Bacterial Therapeutics AB consists of 377,736 class A shares with 10 votes per share and 10,848,448 class B shares with one vote per share, in total 11,226,184 shares.