Links go to SEC EDGAR or the sponsor. Document dates are the filing's report date (or filing date); an older prospectus is shown with its date and is not a current comprehensive source. Links are checked weekly; failures are flagged.
Sponsor & official fund page
The sponsor's site carries daily NAV, fact sheets, distribution notices (Section 19(a)), tax information and reinvestment-plan terms.
| Document | Date | Filed | Form | Source | Status |
|---|
| Sponsor websitelatest | — | — | — | Sponsor | OK (Oct 11, 2026, 12:16 AM EDT) |
Prospectus & registration statements
Form N-2 and supplements: investment policies, fee table, leverage terms, rights offerings, at-the-market programmes.
| Document | Date | Filed | Form | Source | Status |
|---|
| Prospectus supplement (Rule 497)latest · filing index | Sep 28, 2026 | Sep 28, 2026 | 497 | SEC EDGAR | OK (Oct 11, 2026, 12:16 AM EDT) |
| Prospectus (Rule 424(b)(3)) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Sep 8, 2025 | Sep 8, 2025 | 424B3 | SEC EDGAR | unchecked |
| Prospectus (Rule 424(b)(5)) — 424B5 · filing index | Nov 22, 2024 | Nov 22, 2024 | 424B5 | SEC EDGAR | unchecked |
| Registration statement amendment (Form N-2/A) — N-2/A · filing index | Nov 13, 2024 | Nov 13, 2024 | N-2/A | SEC EDGAR | unchecked |
| Registration statement amendment (Form N-2/A) — N-2/A · filing index | Oct 30, 2024 | Oct 30, 2024 | N-2/A | SEC EDGAR | unchecked |
| Registration statement / prospectus (Form N-2) · filing index | Jun 26, 2024 | Jun 26, 2024 | N-2 | SEC EDGAR | unchecked |
| Prospectus supplement (Rule 497) · filing index | Nov 25, 2009 | Nov 25, 2009 | 497 | SEC EDGAR | unchecked |
| Registration statement amendment (Form N-2/A) — FORM N-2/A · filing index | Nov 24, 2009 | Nov 24, 2009 | N-2/A | SEC EDGAR | unchecked |
| Registration statement amendment (Form N-2/A) — FORM N-2/A · filing index | Oct 23, 2009 | Oct 23, 2009 | N-2/A | SEC EDGAR | unchecked |
Annual reports (N-CSR)
Financial highlights, statements, notes on leverage and fees, distribution sources.
| Document | Date | Filed | Form | Source | Status |
|---|
| Annual shareholder report (Form N-CSR) — N-CSRlatest · filing index | Dec 31, 2025 | Mar 6, 2026 | N-CSR | SEC EDGAR | OK (Oct 11, 2026, 12:16 AM EDT) |
| Annual shareholder report (Form N-CSR) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Dec 31, 2024 | Mar 5, 2025 | N-CSR | SEC EDGAR | unchecked |
| Annual shareholder report (Form N-CSR) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Dec 31, 2023 | Mar 1, 2024 | N-CSR | SEC EDGAR | unchecked |
| Annual shareholder report (Form N-CSR) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Dec 31, 2022 | Mar 3, 2023 | N-CSR | SEC EDGAR | unchecked |
| Annual shareholder report (Form N-CSR) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Dec 31, 2021 | Mar 3, 2022 | N-CSR | SEC EDGAR | unchecked |
| Annual shareholder report (Form N-CSR) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Dec 31, 2020 | Mar 2, 2021 | N-CSR | SEC EDGAR | unchecked |
Semi-annual reports (N-CSRS)
| Document | Date | Filed | Form | Source | Status |
|---|
| Semi-annual shareholder report (Form N-CSRS) — N-CSRSlatest · filing index | Jun 30, 2026 | Sep 4, 2026 | N-CSRS | SEC EDGAR | OK (Oct 11, 2026, 12:16 AM EDT) |
| Semi-annual shareholder report (Form N-CSRS) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Jun 30, 2025 | Sep 4, 2025 | N-CSRS | SEC EDGAR | unchecked |
| Semi-annual shareholder report (Form N-CSRS) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Jun 30, 2024 | Sep 5, 2024 | N-CSRS | SEC EDGAR | unchecked |
| Semi-annual shareholder report (Form N-CSRS) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Jun 30, 2023 | Aug 31, 2023 | N-CSRS | SEC EDGAR | unchecked |
| Semi-annual shareholder report (Form N-CSRS) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Jun 30, 2022 | Aug 31, 2022 | N-CSRS | SEC EDGAR | unchecked |
| Semi-annual shareholder report (Form N-CSRS) — COLUMBIA SELIGMAN PREMIUM TECHNOLOGY GROWTH FUND, INC. · filing index | Jun 30, 2021 | Aug 31, 2021 | N-CSRS | SEC EDGAR | unchecked |
Portfolio holdings (N-PORT)
Monthly portfolio filed quarterly with a ~60-day lag.
| Document | Date | Filed | Form | Source | Status |
|---|
| Monthly portfolio holdings (Form N-PORT)latest · filing index | Jun 30, 2026 | Aug 28, 2026 | NPORT-P | SEC EDGAR | OK (Oct 11, 2026, 12:22 AM EDT) |
| Monthly portfolio holdings (Form N-PORT) · filing index | Mar 31, 2026 | May 28, 2026 | NPORT-P | SEC EDGAR | unchecked |
| Monthly portfolio holdings (Form N-PORT) · filing index | Dec 31, 2025 | Feb 26, 2026 | NPORT-P | SEC EDGAR | unchecked |
| Monthly portfolio holdings (Form N-PORT) · filing index | Sep 30, 2025 | Nov 26, 2025 | NPORT-P | SEC EDGAR | unchecked |
| Monthly portfolio holdings (Form N-PORT) · filing index | Jun 30, 2025 | Aug 22, 2025 | NPORT-P | SEC EDGAR | unchecked |
| Monthly portfolio holdings (Form N-PORT) · filing index | Mar 31, 2025 | May 27, 2025 | NPORT-P | SEC EDGAR | unchecked |
Proxy statements & reorganisations
Shareholder votes: directors, mergers, liquidations, conversions.
| Document | Date | Filed | Form | Source | Status |
|---|
| Proxy statement (DEF 14A) — DEF 14Alatest · filing index | Jun 16, 2026 | Apr 27, 2026 | DEF 14A | SEC EDGAR | OK (Oct 11, 2026, 12:15 AM EDT) |
| Proxy statement (DEF 14A) — DEF 14A · filing index | Jun 24, 2025 | May 5, 2025 | DEF 14A | SEC EDGAR | unchecked |
| Proxy statement (DEF 14A) — DEF 14A · filing index | Jun 25, 2024 | Apr 22, 2024 | DEF 14A | SEC EDGAR | unchecked |
| Proxy statement (DEF 14A) — DEF 14A · filing index | Jun 20, 2023 | Apr 17, 2023 | DEF 14A | SEC EDGAR | unchecked |
| Proxy statement (DEF 14A) — DEF 14A · filing index | Jun 21, 2022 | Apr 18, 2022 | DEF 14A | SEC EDGAR | unchecked |
| Proxy statement (DEF 14A) — DEF 14A · filing index | Jun 11, 2021 | Apr 23, 2021 | DEF 14A | SEC EDGAR | unchecked |
| Additional proxy materials (DEFA14A) — DEFA14A · filing index | Jun 4, 2021 | Jun 4, 2021 | DEFA14A | SEC EDGAR | unchecked |
| Additional proxy materials (DEFA14A) — SELIGMAN PREMIUM TECHNOLOGY GROWTH · filing index | Apr 7, 2020 | Apr 7, 2020 | DEFA14A | SEC EDGAR | unchecked |
Current reports (8-K)
| Document | Date | Filed | Form | Source | Status |
|---|
| Current report (8-K)latest · filing index | Oct 9, 2026 | Oct 9, 2026 | 8-K | SEC EDGAR | OK (Oct 11, 2026, 12:16 AM EDT) |
| Current report (8-K) · filing index | Aug 7, 2026 | Aug 7, 2026 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | Jun 16, 2026 | Jun 16, 2026 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | May 8, 2026 | May 8, 2026 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | Mar 19, 2026 | Mar 19, 2026 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | Feb 6, 2026 | Feb 6, 2026 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | Nov 7, 2025 | Nov 7, 2025 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | Aug 8, 2025 | Aug 8, 2025 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | Jun 24, 2025 | Jun 24, 2025 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | May 9, 2025 | May 9, 2025 | 8-K | SEC EDGAR | unchecked |
| Current report (8-K) · filing index | Mar 31, 2025 | Mar 31, 2025 | 8-K | SEC EDGAR | unchecked |
Other
| Document | Date | Filed | Form | Source | Status |
|---|
| Proxy voting record (N-PX)latest · filing index | Jun 30, 2026 | Aug 18, 2026 | N-PX | SEC EDGAR | OK (Oct 11, 2026, 12:16 AM EDT) |
| Proxy voting record (N-PX) · filing index | Jun 30, 2025 | Aug 21, 2025 | N-PX | SEC EDGAR | unchecked |
| Proxy voting record (N-PX) · filing index | Jun 30, 2024 | Sep 3, 2024 | N-PX | SEC EDGAR | unchecked |
| Proxy voting record (N-PX) — N-PX · filing index | Jun 30, 2023 | Aug 24, 2023 | N-PX | SEC EDGAR | unchecked |
| All SEC filings for this fund (EDGAR)latest | — | — | — | SEC EDGAR | OK (Oct 11, 2026, 12:16 AM EDT) |
Not on file for this fund: fact sheets, distribution notices, tax information, reinvestment plan. These are published on the sponsor's site rather than EDGAR; use the sponsor link above.