# Evidence memo — Suncor Energy Inc (SU)

*Window: last 90 days (2026-04-18 → 2026-07-17) ·
generated 2026-07-17 04:08 UTC · evidence grade A (events + prose evidence)*

## Research question

What changed in Suncor Energy Inc's filings evidence over the last 90 days?

## Evidence table

| Date | Form | Exhibit | Event type | Verified quote | Grade | C6 posture | SourceLock |
|---|---|---|---|---|---|---|---|
| 2026-04-21 | 6-K | exhibit99 | OTHER_MATERIAL | “Suncor Energy (TSX: SU) (NYSE: SU) will release its first quarter financial results on May 5, 2026 before 5:00 p.m. MT (7:00 p.m. ET).” | A | — | accepted |
| 2026-05-05 | 6-K | — | DIVIDEND_CHANGE | “News Release dated May 5, 2026, Suncor Energy declares dividend” | A | — | accepted |
| 2026-05-05 | 6-K | — | OTHER_MATERIAL | “Suncor Energy reports voting results from Annual General Meeting” | A | — | accepted |
| 2026-05-06 | 6-K | exhibit99 | EARNINGS_BEAT | “Generated over $4.0 billion in adjusted funds from operations and $2.9 billion in free funds flow.” | A | high / normal | accepted |
| 2026-05-14 | 6-K | — | OTHER_MATERIAL | “Suncor Energy Inc. Extractive Sector Transparency Measures Act Report for the reporting year January 1, 2025 to December 31, 2025” | A | — | accepted |

## Change narrative

On April 21, 2026, Suncor Energy announced it would release its first quarter financial results on May 5, 2026 before 5:00 p.m. MT (7:00 p.m. ET) [SU_20260421_369d8cdc9530]. On May 5, 2026, the company declared a dividend [SU_20260505_94896f7ac85f] and reported voting results from its Annual General Meeting [SU_20260505_737095da0df7]. The same day, Suncor Energy also announced it had generated over $4.0 billion in adjusted funds from operations and $2.9 billion in free funds flow [SU_20260506_2759fceebeac]. On May 14, 2026, the company filed its Extractive Sector Transparency Measures Act Report for the reporting year January 1, 2025 to December 31, 2025 [SU_20260514_dcaad7aa1c9f].

## Risk-gate note

C6 posture ran on 1 filing in the window; no elevated flag.

C6 out-of-sample status (approved wording): rareness confirmed OOS 2026-07-06 (22% fire rate, n=9 held-out); sign confirmation pending (elevated arm n=2; accrual live from 2026-07-16).

## Event-study context

Lens XEG: 58 matured of 65 accepted events.
- DIVIDEND_CHANGE: n=5 matured — underpowered.
- EARNINGS_BEAT: n=2 matured — underpowered.
- OTHER_MATERIAL: n=42 matured, peer-model mean CAR +0.3% at window end — underpowered (peer-model CAR CI spans zero).

## Honest conclusion

Over the window (5 accepted event(s)): evidence posture improved; underpowered; not statistically proven.

---

*Research and education use only. Not investment advice. Event types, grades, and postures are research classifications, not recommendations. Every quoted span is SourceLock-verified against the primary SEC filing.*