Filing Details
- Accession Number:
- 0000950170-25-017029
- Form Type:
- 4
- Zero Holdings:
- No
- Publication Time:
- 2025-02-10 16:05:05
- Reporting Period:
- 2025-02-10
- Accepted Time:
- 2025-02-10 16:05:05
- SEC Url:
- Form 4 Filing
Issuer
| Cik | Name | Symbol | Sector (SIC) | IRS No |
|---|---|---|---|---|
| 2036042 | Sionna Therapeutics Inc. | SION | () | 4 |
Insiders
| Cik | Name | Reported Address | Insider Title | Director | Officer | Large Shareholder | Other |
|---|---|---|---|---|---|---|---|
| 1451612 | Bruce Booth | Sionna Therapeutics, Inc. 21 Hickory Drive, Suite 500 Waltham MA 02451 | No | No | No | No |
Reported Non-Derivative Transactions
| Sec. Name | Acquisiton - Disposition | Date | Amount | Price | Remaning Holdings | Equity Swap Involved | Form Type | Code | Nature of Ownership | Explanation |
|---|---|---|---|---|---|---|---|---|---|---|
| Common Stock | Acquisiton | 2025-02-10 | 2,886,293 | $0.00 | 2,886,293 | No | 4 | C | Indirect | By Atlas Venture Fund XI, L.P. |
| Common Stock | Acquisiton | 2025-02-10 | 747,727 | $0.00 | 747,727 | No | 4 | C | Indirect | By Atlas Venture Opportunity Fund II, L.P. |
| Common Stock | Acquisiton | 2025-02-10 | 60,000 | $18.00 | 807,727 | No | 4 | P | Indirect | By Atlas Venture Opportunity Fund II, L.P. |
| Equity Swap Involved | Form Type | Code | Nature of Ownership | Explanation |
|---|---|---|---|---|
| No | 4 | C | Indirect | By Atlas Venture Fund XI, L.P. |
| No | 4 | C | Indirect | By Atlas Venture Opportunity Fund II, L.P. |
| No | 4 | P | Indirect | By Atlas Venture Opportunity Fund II, L.P. |
Reported Derivative Transactions
| Sec. Name | Sec. Type | Acquisiton - Disposition | Date | Amount | Price | Amount - 2 | Price - 2 |
|---|---|---|---|---|---|---|---|
| Common Stock | Series Seed convertible preferred stock | Disposition | 2025-02-10 | 1,051,051 | $0.00 | 719,355 | $0.00 |
| Common Stock | Series A convertible preferred stock | Disposition | 2025-02-10 | 1,806,317 | $0.00 | 1,236,271 | $0.00 |
| Common Stock | Series B convertible preferred stock | Disposition | 2025-02-10 | 1,298,332 | $0.00 | 888,599 | $0.00 |
| Common Stock | Series C convertible preferred stock | Disposition | 2025-02-10 | 61,463 | $0.00 | 42,068 | $0.00 |
| Common Stock | Series C convertible preferred stock | Disposition | 2025-02-10 | 1,092,504 | $0.00 | 747,727 | $0.00 |
| Remaning Holdings | Exercise Date | Expiration Date | Equity Swap Involved | Transaction Form Type | Transaction Code | Nature of Ownership |
|---|---|---|---|---|---|---|
| 0 | No | 4 | C | Indirect | ||
| 0 | No | 4 | C | Indirect | ||
| 0 | No | 4 | C | Indirect | ||
| 0 | No | 4 | C | Indirect | ||
| 0 | No | 4 | C | Indirect |
Footnotes
- Each share of Series Seed convertible preferred stock, Series A convertible preferred stock, Series B convertible preferred stock and Series C convertible preferred stock (collectively, the "Preferred Stock") automatically converted into shares of the Issuer's Common Stock on a one-for-1.4611 basis upon the closing of the Issuer's initial public offering on February 10, 2025. The Preferred Stock had no expiration date.
- These shares are held directly by Atlas Venture Fund XI, L.P. ("AVF XI "). The general partner of AVF XI is Atlas Venture Associates XI, L.P. ("AVA XI LP"). Atlas Venture Associates XI, LLC ("AVA XI LLC") is the general partner of AVA XI LP. The Reporting Person is a member of AVA XI LLC and disclaims beneficial ownership of such securities held by AVF XI, except to the extent of his pecuniary interest therein, if any.
- These shares are held directly by Atlas Venture Opportunity Fund II, L.P. ("AVOF II"). The general partner of AVOF II is Atlas Venture Associates Opportunity II, L.P. ("AVAO II LP"). Atlas Venture Associates Opportunity II, LLC ("AVAO II LLC") is the general partner of AVAO II LP. The Reporting Person is a member of AVAO II LLC and disclaims beneficial ownership of such securities held by AVOF II, except to the extent of his pecuniary interest therein, if any.
Billionaire Hedge Funds
